Internet Multimedia Research Articles

Роль засобів візуалізації у самостійній роботі студента-філолога

Стаття присвячена визначенню ролі засобів візуалізації у самостійній роботі студента-філолога. У ній зроблено спробу узагальнити досвід використання традиційних та нових засобів візуалізації, пов’язаних з впровадженням інформаційно-комунікаційних технологій у навчальний процес. Основна увага звернена на важливість комп’ютерної грамотностістудентів, їх вміння користуватися Internet-ресурсами, мультимедіа, вміння робити презентації та підкріплювати самостійну роботу аудіо- та відеоматеріалами.

Compressed Sensing via Dictionary Learning and Approximate Message Passing for Multimedia Internet of Things

In this paper, we present a compressed sensing-based approach, which combines the dictionary learning (DL) method and the approximate message passing (AMP) approach. The approach can be used for efficient communication in the multimedia Internet of Things (IoT). AMP is a signal reconstruction algorithm framework, which can be explained as an iterative denoising process. On the other hand, the DL method seeks an adaptive dictionary for realizing sparse signal representations, and provides good performance in signal denoising. We apply the DL-based denoising method within the AMP algorithm framework and propose a novel DL-AMP framework. We demonstrate our framework’s effectiveness for multimedia IoT devices by showing its capability in reducing required communication bandwidth for multimedia communication while improving reconstruction quality (by over 2 dB).

Utilizing the information and communication technology as a learning tool for students

Introduction and Objective: The use of information and communication technology (ICT) to facilitate learning and training the students has led to the learning environment tend to become virtual and to change the communication and learning styles. This study aimed to investigate how students benefit from new learning technologies as a learning tool. Materials and Methods: This study is a descriptive–analytical study; the population included all students of the school of Medical Sciences in 2016, in Khoy, Iran. A questionnaire was used for data collecting. The questionnaire contains 50 questions regarding demographic information, the skills and the benefits of the students of computers and the Internet as the learning tools. After gathering the data, the analysis SPSS version 16 software and descriptive and inferential statistical analysis were used. Results: Students expressed their relatively high access to computers and the Internet (60.7%) and using ICT in learning (59.3%). The students' skills in the use of computers and the Internet (56%) were relatively high (97%). Most of the students used PowerPoint software as a learning tool, and the use of educational websites was relatively high in the nursing group (75%) compared to environmental health (50%). Conclusion: Considering the increased use of information technology proportionate with the students' personal skills and the effectiveness of multimedia educational software and Internet in learning, educational planners should provide access to e-learning by creating the conditions and introducing the high quality and rich educational software.

Are Health Videos from Hospitals, Health Organizations, and Active Users Available to Health Consumers? An Analysis of Diabetes Health Video Ranking in YouTube.

Health consumers are increasingly using the Internet to search for health information. The existence of overloaded, inaccurate, obsolete, or simply incorrect health information available on the Internet is a serious obstacle for finding relevant and good-quality data that actually helps patients. Search engines of multimedia Internet platforms are thought to help users to find relevant information according to their search. But, is the information recovered by those search engines from quality sources? Is the health information uploaded from reliable sources, such as hospitals and health organizations, easily available to patients? The availability of videos is directly related to the ranking position in YouTube search. The higher the ranking of the information is, the more accessible it is. The aim of this study is to analyze the ranking evolution of diabetes health videos on YouTube in order to discover how videos from reliable channels, such as hospitals and health organizations, are evolving in the ranking. The analysis was done by tracking the ranking of 2372 videos on a daily basis during a 30-day period using 20 diabetes-related queries. Our conclusions are that the current YouTube algorithm favors the presence of reliable videos in upper rank positions in diabetes-related searches.

Managing the Quality of Experience in the Multimedia Internet of Things: A Layered-Based Approach.

This paper addresses the issue of evaluating the Quality of Experience (QoE) for Internet of Things (IoT) applications, with particular attention to the case where multimedia content is involved. A layered IoT architecture is firstly analyzed to understand which QoE influence factors have to be considered in relevant application scenarios. We then introduce the concept of Multimedia IoT (MIoT) and define a layered QoE model aimed at evaluating and combining the contributions of each influence factor to estimate the overall QoE in MIoT applications. Finally, we present a use case related to the remote monitoring of vehicles during driving practices, which is used to validate the proposed layered model, and we discuss a second use case for smart surveillance, to emphasize the generality of the proposed framework. The effectiveness in evaluating classes of influence factors separately is demonstrated.

An Efficient PMIPv6-Based Handoff Scheme for Urban Vehicular Networks

In urban vehicular networks, traveling users can enjoy Internet multimedia services through various mobile devices, such as smart phones and laptops. To maintain seamless and ubiquitous Internet connectivity, an efficient handoff scheme has to be employed when mobile users travel across different access networks. However, in the urban vehicular environment, the high velocity of vehicles and the random mobility of users impose great challenges to the design of an effective handoff scheme. In this paper, we propose an Efficient Proxy Mobile IPv6 (E-PMIPv6)-based handoff scheme that guarantees session continuity for urban mobile users. In the registration process, E-PMIPv6 enables mobile users to obtain seamless Internet connectivity either from fixed roadside units or mobile routers and improves cache utilization at the local mobility anchor by merging the binding cache entries of the mobile users. In the handoff process, E-PMIPv6 comprehensively considers various handoff scenarios in the urban vehicular environment and provides transparent network-based mobility support to individual mobile users or a group of users in the same mobile network without disrupting ongoing sessions. In addition, E-PMIPv6 eliminates packet loss by either packet buffering or packet tunneling to improve handoff performance in each handoff scenario. Finally, a detailed analytical model is developed to study the performance of E-PMIPv6 in terms of handoff latency, signaling overhead, buffering cost, and tunneling cost. Analysis and simulation results demonstrate that the proposed E-PMIPv6 successfully extends the scalability of user mobility and greatly improves handoff efficiency in urban vehicular networks.

ITI-CERTH participation to TRECVID 2011

This paper provides an overview of the tasks submitted to TRECVID 2011 by ITI-CERTH. ITICERTH participated in the Known-item search (KIS) as well as in the Semantic Indexing (SIN) and the Event Detection in Internet Multimedia (MED) tasks. In the SIN task, techniques are developed, which combine motion information with existing well-performing descriptors such as SURF, Random Forests and Bag-of-Words for shot representation. In the MED task, the trained concept detectors of the SIN task are used to represent video sources with model vector sequences, then a dimensionality reduction method is used to derive a discriminant subspace for recognizing events, and, nally, SVMbased event classiers are used to detect the underlying video events. The KIS search task is performed by employing VERGE, which is an interactive retrieval application combining retrieval functionalities in various modalities and exploiting implicit user feedback.

Special Issue: Smart Satellite Systems

Special Issue: Smart Satellite Systems

Exploring canonical correlation analysis with subspace and structured sparsity for web image annotation

Canonical correlation analysis (CCA) has been extensively exploited for modelling Internet multimedia. However, two major challenges are raised for the classical CCA. First, CCA frequently fails to remove noisy and irrelevant features. Second, CCA cannot effectively capture the correlation between semantic labels, which is especially beneficial for annotating web images. In this paper, we propose a new framework that integrates structural sparsity and low-rank shared subspace into the least-squares formulation of CCA. Under this framework, multiple label interactions can be uncovered by the shared common structure of the input space. Meanwhile, a few highly discriminative features can be decided via the structural sparse norm. Owing to the presence of non-smooth structured sparsity, a new efficient iterative algorithm is derived with guaranteed convergence. The empirical studies over several popular web image data collections consistently deliver the effectiveness of our new formulation in comparison with competing algorithms.

Research on bottleneck-delay in internet based on IP united mapping

End-to-End delay is an important performance metric to evaluate the performance of many Internet multimedia applications such as, Voice Over IP (VOIP), online gaming, cloud computing etc. Especially, the delays at some bottleneck-links of a path account for a large proportion of the End-to-End delay. To accurately identify the delays at bottleneck-links is a fundamental approach to study the delay feature of Internet, and is beneficial to the design of some efficient distributed algorithms. In this paper, we utilize real measured probing data to conduct a statistical analysis of the relationship between one-way delay and bottleneck-delay, and demonstrate that bottleneck-delay appears in 70 % of the paths in Internet. In order to further study the features of bottleneck-delay, we propose an IP united mapping scheme which combines the IP centralized mapping with the IP geographic mapping. Experiment results show that two ends of a bottleneck-link are usually located in the same country, and the links with a large number of entrances (in-degrees) and few number of exits (out-degrees) or the average shallower links are prone to leading to bottleneck-delays. Based on the structural properties of the bottleneck-links, we also give a deep discussion about the factors of bottleneck-delays at last, which demonstrates queuing delay is a key factor of bottleneck-delay.

IMPACT OF MULTIPLAY TRANSMISSION IN MOBILE WIMAX USING OVERLAY SCANNING

The growing demand for mobile internet and wireless multimedia applications has motivated the development of broadband wireless-access technologies in recent years. There are several issues that could impact the base station handover as a serious problem in the mobile communication system. In hard handover, a short time break known as handover interruption decreases the quality-of-services (QoS) due to connection between mobile subscriber station (MS) and serving base station (BS) is closed and ranging hand initiation to establish new connection. Prolonged time of request and response due to number of neighbours to scan will cause delay in handover process. This research proposed performance analysis of WiMAX/IEEE 802.16 with mobility supported to scan the channels provided by the mobile station. The proposed strategy required the mobile station for operation with a scan that can be used to reduce the time when trying to establish a network connection or do between neighboring base station handover. A second type is the fast handover that is proposed to reduce the unnecessary surrender to six different access modes. The mobile WiMAX air interface utilizes orthogonal frequency division multiple access (OFDMA) as the preferred multiple-access method in the downlink (DL) and uplink (UL) for improved multipath performance and bandwidth scalability. All simulations are run using MATLAB software to develop a new Overlay Scanning Mechanism (OSMA) algorithm. OSMA mainly focus on when to perform a scan to estimate future needs. Simulation results are expected to show WiMAX coverage by using real world data to detect movement and show that there are strategies that reduce the time required for scanning operations significantly.

MODERN APPROACH TO DIGITAL LITERACY DEVELOPMENT IN EDUCATION

The article is dedicated to the necessity of formation and development of digital literacies for the professional, educational and personal purposes. The article also provides a detailed classification of digital literacies and competences. Rapid penetration of information technologies in almost all spheres of our life, including education, and the fact that most ordinary users received unlimited access to the Internet, has led to a rapid rise of the information volume or information explosion and massive changes in the way of communication between people in all spheres and also to forming the information society as one of the leading contemporary social processes. Such changes in socio-economic conditions modified the socio-psychological and psycho-pedagogical portrait of the students, the nature of their participation in educational, professional and social life, as well as the methods of teaching the humanities, computer and natural sciences. The basis of modern educational paradigm are such theoretical concepts as digital literacies, distance learning technologies, information and communication technologies, internet resources, multimedia electronic textbooks, online courses, social networks, Internet resources, individualization and differentiation of learning activities, Personal Learning Network, etc. The importance of improving the educational process through the methodical training of faculty members and tutors, the application of use new technologies in teaching, the formation and development of information and communication competences, digital literacies and knowledge is emphasized.

The Comparative Analysis of Accessibility Index Value of Government Internet Financial Reporting In Indonesia

The financial information through internet is called IFR (Internet Financial Reporting) which is a combination between the internet multimedia capability and capacity to communicate the financial information interactively. This study is aimed to compare the quality of financial reporting disclosures based on the accessibility of IFR on government website (e-government) by using Accessibility Index Value between two groups of samples. The study looks at Indonesia local government’s use of the internet both in provincial and municipal government. The provincial government must be more highlighted by the public so it is hypothesized it will disclose information in its e-government with better format and quality than the municipal government measured by the index which shows the ability of some citizens to access the data provided in e-government. Based on the testing results with Mann Whitney Test, the results are not significant. The majority has not emphasized the importance of increasing accountability and widening the scope of measurement and reporting systems.

Efficacy of an Intervention to Alter Skin Cancer Risk Behaviors in Young Adults

Skin cancer is the most common cancer, and its incidence is increasing. Young adults expose themselves to large amounts of ultraviolet radiation (UV) and engage in minimal skin protection, which increases their risk. Internet interventions are effective in modifying health behaviors and are highly disseminable. The current study's purpose was to test an Internet intervention to decrease UV exposure and increase skin protection behavior among young adults. RCT conducted in 2014, with data analyzed in 2015. A national sample of adults aged 18-25 years at moderate to high risk of developing skin cancer by a self-report measure was recruited online. Participants were randomized to one of three intervention conditions: assessment only, the website of a skin cancer organization, or a tailored interactive multimedia Internet intervention program (UV4.me) based on the Integrative Model of Behavioral Prediction. Self-reported overall UV exposure and skin protection assessed at 3 and 12 weeks after baseline. Secondary outcomes were self-reported intentional and incidental UV exposure, sunburns, sunscreen use, and skin cancer screening. For the intervention arm, there were significant decreases in UV exposure and increases in skin protection at both follow-up time points compared with the assessment-only condition (p<0.001). The effect sizes (Cohen's d) comparing the experimental and assessment-only arm for exposure behaviors were 0.41 at 3-week follow-up and 0.43 at 12-week follow-up. The effect sizes for protection behaviors were 0.41 at 3-week follow-up and 0.53 at 12-week follow-up. The control condition was not significantly different from the assessment only condition. All three conditions exhibited decreased exposure and increased protection at both follow-ups (p<0.01), but the effect was much stronger in the intervention group. Secondary outcomes were generally also significantly improved in the intervention condition compared with the other conditions. This is the first published report describing the results of an RCT of an Internet intervention to modify skin cancer risk behaviors among young adults. The UV4.me intervention significantly improved self-reported skin cancer prevention behaviors. Future research will investigate mechanisms of change and approaches for dissemination. This study is registered at www.clinicaltrials.gov NCT02147080.

A Correlation Model of Mixed Service Qoe and Qos in Integration Network Environment

With the rapid development of Internet and gradual enriched multimedia services, diversified needs of internet services are put forward. At the same time, people’s requirements on quality of service are more stringent, traditional QoE only considers the evaluation method of network quality has not fully response service quality. At present, many research study association model of QoE and QoS only for single network and service. In this paper, a correlation model of mixed service integration network based on the environment is proposed.

Использование интернет-ресурсов и мультимедийных технологий в развитии компетенций самостоятельной работы (на примере изучения русского языка)

Использование интернет-ресурсов и мультимедийных технологий в развитии компетенций самостоятельной работы (на примере изучения русского языка)

Social networks meet next generation mobile multimedia internet [Guest Editorial

With ever growing popularity and widespread adoption of mobile social applications, the traffic handled by mobile networks and the Internet has grown significantly. While researchers have been making advances in the study of social networks and independently in the area of next generation wireless networks, very little attention has been given to the interplay between the two, and their impact on each other and society. The challenge of the interplay between social networks and mobile networks is compounded by the fact that advances in smart handheld devices and those in wireless technologies have paved the way for increasing bandwidth catering to very high data rates. Sophisticated social applications such as Second Life, and those involving 3D and real-time data can take advantage of such advances. It is entirely likely that such advances in turn could lead to novel social applications not yet thought of. For example, new social applications could emerge in the area of social health or social games with new forms of massively multi-player, multimedia, 3D, and role playing games.

Design of a Novel Architecture Signaling Network to Provide Internet Multimedia Subsystem Services through Aeronautical Passenger Communication

This article describes a novel architecture signaling network so that an IP Multimedia Subsystem (IMS) user, flying in an aircraft, be able to register with his IMS network of origin and have access to personal services and multimedia, through a Wide-Band Code Division Multiple Access (W-CDMA) link. The proposed architecture integrates the Session Initialization Protocol (SIP), the Network Mobility Basic Support (NEMO BS) protocol and the Mobile Internet Protocol (MIPv6) to enable the usage of IMS services by passenger on board an aircraft, as a type of Aeronautical Passenger Communication (APC) services. In this novel architecture, NEMO and MIPv6 protocols are responsible for the mobility management of smartphones and user notebook and the SIP protocol is responsible for the register and the management of sessions of an IMS user. This novel architecture enables an Air Communication Service Provider (ACSP) be able to supply to an on-board passenger (The IMS user) some APC services through an Universal Mobile Telecommunication System (UMTS). The simulation results indicate the accuracy of the proposed architecture into aeronautical scenarios.

Guest editorial: selected papers from ICIMCS 2012

These papers cover key issues in Internet multimedia computing and services, including large-scale visual search, mobile media processing, Internet image tagging, video transmission, as well as fundamental technologies for intelligent multimedia computing, such as image segmentation, logo recognition, and object tracking. The first article “Visual word expansion and BSIFT verification for large-scale image search” by Zhou et al. presents a visual word expansion method improving the recall of retrieval on large-scale image collections and a binary SIFT verification method boosting the retrieval precision. The former represents a query image as the aggregation of visual words of local features in the query and the neighboring words of these query words. The latter verifies feature matching between images based on the binarized SIFT feature. The work is experimented on two public image data sets. The second article “Accurate sensing of scene geo-context via mobile visual localization” by Liu et al. proposes a new mobile image geo-tagging approach toward accurate location tagging for images captured in urban areas. For a landmark image, the approach infers comprehensive and accurate geo-context of the image, including camera location, view direction, and scene location, by exploiting large-scale image retrieval and 3D reconstruction techniques. Experimental results on the San Francisco street view data set, which consists of approximately 150 k panoramic images in San Francisco at about 4-m intervals, have demonstrated the effectiveness of the approach. The third article entitled “Tag ranking based on salient region graph propagation” by Tang et al. presents a new tag ranking solution to rank user-contributed tags associated with Internet images. The solution exploits salient regions in images and ranks tags by integrating visual clues from entire images and salient regions of images. It constructs two sparse graphs over images and salient sub-images, International Conference on Internet Multimedia Computing and Services (ICIMCS) is an annual conference sponsored by ACM SIGMM China Chapter. The conference is especially interested in the latest technologies and applications that deal with the Web-scale processing and management of heterogeneous data from the Internet for multimedia computing and service. ICIMCS 2012 was held in Wuhan, China. The conference attracted around 90 participants, including researchers from academia and industries across ten countries/regions, for sharing their recent works on the topics ranging from visual feature representation and analysis to visual recognition and classification, and from social and mobile media analysis to multimedia services. This special issue comprises the extended versions of seven papers, including three best papers and four papers from the regular and special sessions of ICIMCS 2012.

A First Design Approach to a Multimedia SDK Based on a Hybrid P2P Architecture

The Internet multimedia streaming increased proportional to the number of streaming users and from 2005 peer-to-peer media streaming received a substantial amount of research attention and was applied for both live and on-demand video streaming. This technique succeeded to provide a large number of multimedia streams while consuming less bandwidth than in the case of a client-server architecture. Multimedia streaming is a complex subject, it widens over various computer science fields as the networking area, multimedia compression area and the security area. Due to the increasing need of multimedia streaming applications and the need for continuous communication with harsh constraints such as real-time communication, low bandwidth and content security, the need for a flexible and extensible tool is justified, and the main purpose of such a tool is to facilitate the development of applications such as Goober (9), IConf (10), Ekiga (11) or Skype (12). The responsibilities of such SDK are to capture efficiently multimedia information from a web camera and/or a microphone and send them to its peer. The proposed SDK was built on the .NET Framework 4.5 based on a hybrid peer-to-peer architecture. The SDK can be integrated on multiple .NET platforms such .NET Framework 4.5, Silverlight, and Windows Phone 8, and due to its flexibility it can be used by desktop clients, web clients and mobile clients. From a communication perspective, the SDK starts several independent services which capture incoming data, and uses dynamic proxy objects to send data to its peers, services which assure the necessary degree of parallelism needed to have a responsive application with real-time communication.