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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: 11   Issue: Combined Issue 1 & 2

Published In:   April 2015

Publication Frequency: Quarterly

Articles in 2020

Search Available Volume and Issue for Journal of Mobile Multimedia

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A Mobile Omnidirectional Wheelchair: Its Implementation and Experimental Evaluation

Keita Matsuo1, Donald Elmazi2, Yi Liu3 and Leonard Barolli4

1Fukuoka Prefectural Fukuoka Technical High School, 2-19-1 Arae, Sawara-ku, Fukuoka-city, 814-8520 Fukuoka, Japan
2Faculty of Information Technologies, Polytechnic University of Tirana, Bul. “D¨eshmor¨et e Kombit” “Mother Tereza” Square, Nr. 4, Tirana, Albania
3Graduate School of Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-Ku, 811-0295 Fukuoka, Japan
4Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-Ku, 811-0295 Fukuoka, Japan

Abstract: [+]    |    Download File [ 429KB ]

Abstract: In recent years, more and more convenient facilities and equipments have been developed in order to satisfy the requirements of elderly people and disabled people. Among them, wheelchair is a common one which is widely used and can provide the user with many benefits, such as maintaining mobility, continuing or broadening community and social activities, conserving strength and energy, and enhancing quality of life. The wheelchair body must be compact enough to go through narrow doorways. The wheelchair must be wide enough to prevent the patient from falling on the floor. A large footprint is therefore desirable for stability and safety, while wheelchairs must conform to dimen- sional constraints. In this paper, we present the implementation and evaluation of an omnidirectional wheelchair, which has a small size and can move easily in narrow spaces. In order to evaluate the implemented wheelchair, we carried out some experiments and discussed some implementation and application issues. The experimental results show that the implemented wheelchair in general works properly.

Keywords: Mobile Robos, Omnidirectional Wheelchair

Implementation and Evaluation of A Fuzzy-based Cluster-Head Selection System for Wireless Sensor Networks Considering Network Traffic

Donald Elmazi1, Keita Matsuo2, Tetsuya Oda3, Makoto Ikeda4 and Leonard Barolli4

1Faculty of Information Technologies, Polytechnic University of Tirana, Bul. “D¨eshmor¨et e Kombit” “Mother Tereza” Square, Nr. 4, Tirana, Albania
2Fukuoka Prefectural Fukuoka Technical High School, 2-19-1 Arae, Sawara-ku, Fukuoka-city, 814-8520 Fukuoka, Japan
3Graduate School of Engineering, Fukuoka Institute of Technology (FIT), 3-30-1, Wajiro-Higashi, Higashi-Ku, Fukuoka 811-0295, Japan
4Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-Ku, Fukuoka 8110295, Japan

Abstract: [+]    |    Download File [ 162KB ]

Abstract: There are many fundamental problems that Wireless Sensor Networks (WSNs) research will have to address in order to ensure a reasonable degree of cost and system quality. Some of these problems include sensor node clustering, Cluster Head (CH) selection and energy dissipation. Cluster formation and CH selection are important problems in WSNs applications and can drastically affect the WSNs energy. However, selecting of the CH is not easy in different environments which may have different characteristics. In order to deal with this problem, in our previous work, we have proposed a power reduction algorithm for WNSs based on fuzzy logic and number of neighbor nodes. In this paper, we propose a new fuzzy-based CH selection system considering network traffic to improve the performance of the previous system. We evaluate the proposed system by simulations and show that it has a good CH selection.

Keywords: Wireless Sensor Networks, Cluster-Head, Network Traffic, Fuzzy Logic

Evaluation of a RFID-Based System of a Table Type Rfid Reader

Kiyotaka Fujisaki

Department of Advanced Information Technology, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

Abstract: [+]    |    Download File [ 705KB ]

Abstract: RFID system is one of the key technology to bring efficiency to library services such as the automatic rental of book and return. In this paper, we evaluate the performance of table type RFID reader. Furthermore, when RFID reader is on the metallic plate (which affected the performance of RFID), we investigate the relation between the reading rate and the distance between metallic plate and RFID reader. From the experiments, it is clearly shown that communication area decreases and becomes near the center of reader's antenna as the distance between the tag and the reader increases. The influence of the metallic plate to the reader depends on the gap between the metallic plate and the reader.

Keywords: RFID System, Wireless Communication, Automatic Rental and Return, Li- brary services

Improving Reliability of JXTA-Overlay Platform: Evaluation for e-Learning and Trustworthiness

Yi Liu1, Shinji Sakamoto1, Keita Matsuo2, Makoto Ikeda3 and Leonard Barolli3

1Graduate School of Engineering, Fukuoka Institute of Technology (FIT), 3-30-1, Wajiro-Higashi, Higashi-Ku, Fukuoka 811-0295, Japan
2Fukuoka Prefectural Fukuoka Technical High School, 2-19-1 Arae, Sawara-ku, Fukuoka-city, 814-8520 Fukuoka, Japan
3Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), 3-30-1, Wajiro-Higashi, Higashi-Ku, Fukuoka 811-0295, Japan

Abstract: [+]    |    Download File [ 522KB ]

Abstract: We have implemented JXTA-Overlay platform, which is a middleware built on top of the JXTA specification. The JXTA-Overlay defines a set of protocols that standardize how different devices may communicate and collaborate among them. Also, it provides a set of basic functionalities, primitives, intended to be as complete as possible to satisfy the needs of most JXTA-based applications. In P2P systems, each peer has to obtain information of peers and propagate it to other peers. The trustworthiness of peers is very important for safe communication in P2P systems. In this paper, we propose and evaluate a fuzzy-based system to improve the reliability of JXTA-Overlay platform. The JXTA-Overlay is integrated with Internet of Things (IoT) by using RFID technology and SmartBox. We evaluate JXTA-Overlay platform for e-learning and trustworthiness. The experimental results show that by using JXTA-Overlay is possible to decide the situation of learners. The simulation results have shown that the proposed system has a good performance and can select trusted peers to connect to JXTA-Overlay platform.

Performance Evaluation of Sightseeing Contents Considering Different Computer Skill and Devices

Kaoru Sugita1, Ken Nishimur2 and Masao Yokota3

1Fukuoka Institute of Technology
2Graduate School of Fukuoka Institute of Technology
3Fukuoka Institute of Technology

Abstract: [+]    |    Download File [ 2501KB ]

Abstract: In our previous work, we already proposed a user interface switching function as a new concept of ‘universal multimedia access’ to narrow the digital divide by providing appropriate multimedia expressions according to users’ (mental and physical) abilities, computer facilities, and network environments. The user interface switching provides a User Interface (UI) with appropriate operations and media according to their computer skill and computer facilities. In order to evaluate our approach for user interface switching, we have constructed sightseeing contents and introduce 28 spots in 6 prefectures of Japan providing 9 types of user interfaces in HTML5 and Java Script. In this paper, we discuss the performance evaluation for the sightseeing contents.

Keywords: Multimedia Contents, User Interface, Sightseeing Information, Information Design.

An Interactive e-Learning System for Improving Students Motivation and Self-learning by Using Smartphones

Noriyasu Yamamoto

Fukuoka Institute of Technology

Abstract: [+]    |    Download File [ 407KB ]

Abstract: In this paper, we present an interactive learning system, which uses a method of acquiring / utilizing the study records for improving the students learning motivation for learning. During the lecture, the students use the smartphone for learning. The results showed that the proposed study record system has a good effect for improving students’ motivation for learning. For the professors of the university, it is difficult to offer all necessary information to the students. In addition, they cannot provide the information to satisfy all students because the quantity of knowledge of each student attending a lecture is different. Therefore, for higher level lectures than intermediate level, the students should study by themselves the learning materials. In this study, we show that our method of acquiring / utilizing the study record promotes the self-learning of the student. In this research, we carried experiments during real lectures at the intermediate level. The results showed that the proposed study record system can improve the degree of self-learning after the lecture.

Keywords: e-Learning System, Learning Log, Smartphone, Learning Motivation, Self- Learning

Adaptive Remeshing for Edge Length Interval Constraining

João Vitor de Sá Hauck, Ramon Nogueira Da Silva, Marcelo Bernardes Vieira and Rodrigo Luis de Souza da Silva

Departamento de Ci^encia da Computac~ao, Universidade Federal de Juiz de Fora Juiz de Fora, Minas Gerais 36036-900, Brazil

Abstract: [+]    |    Download File [ 8029KB ]

Abstract: This paper presents a method for explicitly remesh an arbitrary input surface into a mesh with all edge lengths within a fixed interval. The process starts with an arbitrary triangular 2-manifold mesh. The proposed method is iterative and uses stellar operations to achieve the necessary amount of vertices and triangles. It also applies a technique to uniformly distribute the vertices of the model over the surface. At earlier stages of the algorithm, this technique is an approximation of the Laplacian filter. In order to preserve the geometry of the model, some constraints are added to the filter. At later stages, we replace the global uniformization strategy with a nonlinear optimizer, that performs only locally. A projection step is also applied at each iteration, to prevent the geometric distortions caused by the method. We also apply a post processing step to correct the final edges, if the standard iterations do not converge. Our method results in a very regular mesh, with uniform distribution of vertices. The dual trivalent mesh obtained by this mesh can be useful for several applications. The main contribution of this work is a new approach for edge length equalization, with explicit constraints definition, higher computational performance and lower global geometry losses if compared to previous works.

Keywords: iterative remeshing, edge length equalization, interval constraining

A Video Tensor Self-descriptor Based on Block Matching

Helena Almeida Maia, Ana Mara De Oliveira Figueiredo, Fabio Luiz Marinho De Oliveira, Virginia Fernandes Mota and Marcelo Bernardes Vieira

Department of Computer Science, Universidade Federal de Juiz de Fora Juiz de Fora, Minas Gerais, Brazil

Abstract: [+]    |    Download File [ 540KB ]

Abstract: This paper presents a different and simple approach for video description using only block matching vectors, considering that most works on the field are based on the gradient of image intensities. We first divide the image into blocks of different sizes. The block matching method returns a displacement vector for each block, which we use as motion information to obtain orientation tensors and to generate the final self-descriptor, since it depends only on the input video. The resulting descriptor is evaluated by a classification of KTH, UCF11 and Hollywood2 video datasets with a non-linear SVM classifier. Our results indicate that the method runs fast and has fairly competitive results compared to similar approaches. It is suitable when the time response is a major application issue. It also generates compact descriptors which are desirable to describe large datasets.

Keywords: self-descriptor, compact descriptor, variable size block matching, human ac- tion recognition

Tracing Fast-Changing Landscape of Study on Big Data

Weiguang Wang3, Xi Zhang3, Patricia Ordonez de Pablos3 and Jinghuai She3

1Institute of Policy and Management, Chinese Academy of Sciences, Beijing 100190, P.R. China
2College of Management and Economics, Tianjin University, Tianjin 300372, P.R. China
3Department of Business Administration, University of Oviedo, Oviedo, Spain
4Capital University of Economics and Business, Beijing, P.R. China

Abstract: [+]    |    Download File [ 363KB ]

Abstract: This study traced the fast-changing landscape of study on big data. Three hottest aspects of big data study are: technologies, application to academic study and real value in big data. With the rising of mobile multimedia and social media, more and more data were produced in our daily life. Traditional methods and technologies are inefficient or even powerless facing such large scales of data. Also, academics gained greater abilities to produce much more data than before, but had few good methods of analysing big data. Therefore, new technologies targeting efficient utilization of big data are being proposed, like MapReduce, Hadoop and so on. Methods of applying big data to academic study are also being discussed intensively. Furthermore, the political and business value hidden in big data is very attractive. People believe that although some profits have been made, much more are hidden in big data to be dug out. In this paper, current stage, influential references, outstanding authors, important institutions, top-tier journals and evolution of hot topics are all analysed with help of CiteSpace to map big data study. Finally, forecasting on development of big data study was made to provide help for future study.

Mobile and Multimedia Learning in Preschool Education

Athanasios Drigas1, Georgia Kokkalia1 and Miltiadis D. Lytras2

2The American College of Greece – Deree College, Greece

Abstract: [+]    |    Download File [ 105KB ]

Abstract: The growing use of mobile and multimedia learning in our day lives has affected different domains of education. Nowadays, recent development in the role of kindergarten –preschool education in children’s progress includes the use of Information and Communication Technologies (ICTs) and especially the support of mobile and multimedia tools. Mobile and multimedia are recognized as the tools that can foster the knowledge and the experiences for this crucial age and the support of specific areas in kindergarten according to the educational perspective is thought significant. In this paper we present an overview of the most representative studies of the last decade (2003-2014) which concentrates on the skills that are examined in kindergarten (early literacy, early mathematics, cognitive, social-emotional, motor) and are supported by mobile and multimedia educational tools. The effectiveness of them in special education is also examined.

Keywords: mobile learning, multimedia learning, pre-school education, new technology

The TPACK Model to Prepare and Evaluate Lesson Plans: An Experience with Pre-service Teachers Using Social Networks and Digital Resources

Maria Graciela Badilla Quintana and Diana Sabillón Zelaya

Universidad Católica de la Santísima Concepción, Concepción, Chile

Abstract: [+]    |    Download File [ 1496KB ]

Abstract: It is essential to understand and manage technology for pre-service teachers in order to propose methodological, educational and assessment strategies that allow them to innovate and respond adequately to the demands of the educational system. The objective is to identify the elements that pre-service teachers use in learning situations for the production of digital educational resources created to teach using social networks through the TPACK rubric. This research was developed focused on a quantitative methodology and a descriptive design. The sample was formed by 32 pre-service teachers who attend an Information and Communication Technology Course in 2014, at the Faculty of Education, Universidad Católica de la Santísima Concepción. Main results obtained from the analysis of three educational resources (blog, Prezi and cartoons) indicate that they possess a low level of integration of curricular objectives and technologies; however, results show that students have a high level to select the technological resources in the design of didactic activities. It can be concluded that incorporation of the TPACK model, positively helps pre-service students to know how to integrate the teaching resources in an innovative way. It enables the achievement of an adequate articulation of technology in teaching and learning.

Keywords: Lesson Plans, the Technological Pedagogical Content Knowledge, Initial Teacher Training, Social Networks, Information and Communication Technology

Mobile Learning and Higher Education: A Theoretical Overview

Monica Aresta, Luis Pedro, and Carlos Santos

University of Aveiro, Portugal

Abstract: [+]    |    Download File [ 183KB ]

Abstract: Nowadays, mobile technologies play an important role in Higher Education students’ academic and social lives. When the digital and "always-connected" dimension of the students’ lives becomes an issue of crescent importance, Higher Education Institutions face the need to develop approaches focused on the integration of mobile devices in learning processes. When the adoption of mobile technology for teaching and learning is recognized as an important area of educational research, this paper reviews recent literature on mobile learning in Higher Education settings and summarizes the findings of empirical investigations. Reviewed literature uncovered some benefits and limitations of the adoption of mobile devices in education, showing that Higher Education students’ value the opportunities and improvements brought by mobile learning as well as reveal some frustration and concerns. In the centre of everything and as one of the mains reason for either adopting of rejecting mobile learning, lies the perception of students regarding the added value of mobile devices in their learning processes.

Keywords: Mobile learning, literature review, Higher Education, students’ perspectives

Fuzzy, Neural Network and Expert Systems Methodologies and Applications: A Review

Ul Amin Rooh1, AiJun Li1 and Malik M. Ali2

1School of Automation, Northwestern Polytechnical University, Xi’an, China
2Department of Physics, Allama Iqbal Open University, Islamabad, Pakistan.

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

Abstract: The rapid growth in the field of artificial intelligence from past one decade has a significant impact on various application areas i.e. health, security, home appliances among many. In this paper we aim to review artificial intelligence methodologies and their potential applications intended for variable purposes i.e. Agriculture, applied sciences, business, engineering, finance, management etc. For this purpose articles from past one decade (from 2004 to 2013) are reviewed in order to explore the most recent research advancements in this domain. The review includes 172 articles gathered from related sources including conference proceedings and academic journals. We have categorized the selected articles into four main categories i.e. fuzzy systems, neural network based systems, neuro fuzzy systems and expert systems. Furthermore, expert systems are further classified into three categories: (i) rule based expert systems, (ii) knowledge based expert systems and (iii) intelligent agents. This review presents research implications for practitioners regarding integration of artificial intelligence techniques with classical approaches and suggestions for exploration of AI techniques in variable applications.

Keywords: Literature survey, Artificial intelligence methodologies, Fuzzy systems, Neural network, Expert systems

River Publishers: Journal of Mobile Multimedia