Personal Multimedia Research Articles

Recent Progress and Future Development in Satellite Communication

In the era of high-speed communication, large-capacity broadband and multimedia personalization, satellite communication has become one of the most special ways of wireless communication. With the rapid development of satellite communication during recent years, many projects, like Oneweb, Starlink, and Telesat have been attempted. Based on higher and higher transmission speed demand, Satellite communication becomes a newly effective supplementation of traditional terrestrial station gradually. After nearly half a century of exploration, started from a live broadcast, broadband satellite constellation represented by Starlink had become mainstream application. The future communication system should be land, sea, and space integration. In this article, the phylogeny of SC, basic construct and some application will be discussed. Consider the specific applications, some challenges and future trend are also the focus. At the same time, the comparison between Satellite communication and terrestrial provision offers a thinking way of communication industry ecology. Nevertheless, the satellite communication system based on radio microwave communication still has some technical development problems and application difficulties, and it is necessary to seek breakthroughs in communication technology and hardware facilities.

Personalized product search based on user transaction history and hypergraph learning

As the e-commerce shopping websites like Amazon become more and more popular, amounts of products spring up on the internet and bring great difficulties to product search. However, the conventional text-based search is confined to retrieving products relevant to query and personalized product search is still a challenging problem in e-commerce. Consequently, in this paper, we propose a personalized product search approach, which combines personalized multimedia recommendation into searching. First, we construct a hypergraph based on products’ descriptions and user’s transaction history. Then the similarity between products and the user is calculated based on two kind of textural feature extraction methods. After that, iterative procedure is introduced to obtain the final relevance score of each product to the user. Experimental results on our collected Amazon dataset show the effectiveness of the proposed approach. The MAP@5 of our method can reach 0.48 and the MAP@10 can reach 0.44. We propose a new re-ranking method for personalized product search, in which we utilize user’s transaction history to choose products which is closer to the user’s preference into the higher positions. Experimental results on our collected dataset show that our method is much better than the comparison methods.

TARGETED SYSTEMS OF MEDICAL-PREVENTION AID IN HIGH-RISK GROUPS OF MOST VULNERABLE CATEGORIES OF THE POPULATION RESIDING IN INDUSTRY-AFFECTED AREAS

The article describes the organizational structure and results of the implementation of a unique interdepartmental system of targeted health care and disease prevention in risk groups of the most vulnerable categories of the population (children and pregnant women) resided in industry-affected areas, which is an integral part of the regional system of the management chemical risks for population health. The system is represented by a modular stepwise principle of taking a set of science-based hygienic, health care and disease prevention measures and includes hygienic diagnostics and multimedia health risk assessment; environmental epidemiology studies; biological monitoring of toxicants; evaluation of the personal multimedia toxic burden in the most vulnerable population groups; biological disease prevention, clinical and laboratory diagnostics and rehabilitation treatment of diseases, informing population about health risks posed by chemical contamination of the environment and measures of risk elimination and prevention; performance evaluation including a cost-benefit analysis. The system health management has been implemented since 2001 in 17 municipalities of the Sverdlovsk Region with the mean annual coverage of 11,000 preschool children, pregnants and women of childbearing age. In 75-80% of enrolled children, clinical and diagnostic indices improved, thus indicates to the health promotion: morbidity rate in these children decreased by 30-40%, disease frequency and duration became 2-4 times lower, and over 80 additional incident cases per 1,000 children were prevented. In 2005-2016, the prevented economic damage to public health exceeded two billion rubles. Since 2009, the system has been applied in the Republic of North Ossetia-Alania (the town of Vladikavkaz), the Orenburg Region (the towns of Mednogorsk and Gay), and the Krasnoyarsk Krai (the city of Krasnoyarsk).

Social media security and privacy protection concerning youths. 'How to be safe, secure and social'

In this paper, the concept of privacy and security in social media or social networking will be discussed. Today, people have become much reliable on social media to share their personal information and multimedia content with relatives, friends and other online users. Users are not completely aware of who has access to their private information. This study provides insight into the impact of the various risk factors involved in social media like phishing, profile squatting, image tagging, spamming, cross profiling, etc. there by highlighting the best practices one can employ to protect their online privacy. This study will help the readers to understand the privacy and security issues involved in social media which can be taken by both users and social network organisations to help improve security and privacy.

Ensuring efficient multimedia message sharing in mobile social network

Mobile Social Networks (MSN) are attractive applications which enable users to share data with a group of friends and stay connected. WeChat, QQ are among the most popular applications of MSNs where personal multimedia files are shared among group contacts. However, the security risks accompanying such developments have raised concerns in people. The providers typically store users’ data, and offer few options for the users to custom and manage the dissipation of their data over the network. In this paper, we design a data sharing framework in which individuals retain ownership of their data. The scheme gives users flexible and granular access control over their data, and more importantly it provides protection from the untrusted data provider server. Experiments show the efficiency of our scheme.

Progress in development of flexible metal–air batteries

Flexible electronics has gained great interest in emerging wearable or rolling-up gadgets, such as foldable displays, electronic papers, and other personal multimedia devices. Subsequently, there is a need to develop energy storage devices that are pliable, inexpensive, and lightweight. Metal–air batteries have been identified as one of alternative energy storages for cost effective and high energy density applications. They offer cheaper production cost and higher energy density than most of the currently available battery technologies. Thus, they are promising candidates for flexible energy storage devices. Flexible metal–air batteries have to maintain their performances during various mechanical deformations. To date, efforts have been focused on fabricating flexible components for metal–air batteries. This review presents a brief introduction to the field, followed by progress on development of flexible electrolytes, electrodes, and prototype devices. Challenges and outlook towards the practical use of metal–air batteries are given in the last part.

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.

Evaluation of Background Push Content Download Services to Mobile Devices Over DVB Networks

This paper proposes a multicast content download service based on the use of residual network capacity to push multimedia content to available local storage in personal multimedia devices. The service under study is based on the FLUTE protocol. Specifically, FLUTE packets fill the spare capacity in the IP tunnels reserved for the primary streaming service (opportunistic insertion). The paper also evaluates the use of application layer-forward error correction (AL-FEC) parity to overcome transmission errors, object multiplexing to send the most popular multimedia contents more frequently and cache management policies that consider user preferences to keep in storage the most useful items. The service has been evaluated through simulations and measurements performed with an application prototype based on the DVB-H standards. The results show that AL-FEC enables the use of residual capacity for background content download services. In turn, AL-FEC, as well as object multiplexing, improves the relation between the number of content items and the overall access time. Moreover, results show that high percentages of requests can be served from the local cache of the service, provided that it is possible to estimate the popularity of content items and the user preferences.

Guest Editorial: Special Issue on Wireless Personal Multimedia Communications

Guest Editorial: Special Issue on Wireless Personal Multimedia Communications

Mobile storytelling and informal education in a suburban area: a qualitative study on the potential of digital narratives for young second-generation immigrants

The article discusses an action-research study focused on developing participatory attitudes and the self-expression skills of a group (N = 15) of second-generation immigrant adolescents who live in an urban suburb in Italy. The research study was based on mobile storytelling, a practice of personal multimedia storytelling conducted through mobile devices in connection with social networking services. The findings reveal that encouraging certain uses of the media can have positive effects on the expression of identities and collaborative practices, particularly for marginalised groups. At the same time, a certain laconicism and misspelling tends to characterise the mobile stories created by the teens, which reveals their difficulties in linguistic communication. From this perspective, it is evident that the use of digital media can reinforce pre-existing divisions and therefore there is now a need for public education to play a more active role in balancing inequalities with the development of technical, social and linguistic skills.

Guest Editorial: Special Issue on Wireless Personal Multimedia Communications

Guest Editorial: Special Issue on Wireless Personal Multimedia Communications

Proxy-assisted content sharing using content centric networking (CCN) for resource-limited mobile consumer devices

Rapid developments in mobile technology have transformed mobile phones into personal multimedia devices. Due to these advancements, user created mobile content is on the increase, both in terms of quality and quantity. In addition, content sharing is getting popular in home networks as well as in social community networks. To keep pace with such movements, the new networking technology named as content centric networking (CCN) optimized for content sharing has appeared. However, it has little consideration for mobile consumer devices. So, this paper indicates that the proxy-based CCN scheme can provide lower communication overhead, shorter download time, and lower energy consumption in mobile environments.

Guest Editorial: Special Issue Wireless Personal Multimedia Communications

Guest Editorial: Special Issue Wireless Personal Multimedia Communications

A generic content-based image retrieval framework for mobile devices

Multimedia mobile devices have created new possibilities for developing and accessing a variety of multimedia items such as images, audio and video clips. Personal multimedia items are, nowadays, being consumed at an enormous rate. Therefore, the management of these media items has become a pressing problem. In this paper, a client-server content-based image retrieval framework for mobile platforms is developed, which provides the capability of content-based query and browsing from mobile devices. The proposed framework provides an adaptive user interface and a generic structure, which supports a wide range of mobile devices. In this framework, a client requests the server for retrieval of particular images with a particular content. The server performs a content-based retrieval of images from a selected database and streams the retrieved results back to the client in an efficient way. The query results are transmitted over a wireless network and a certain number of similar images are rendered on the mobile device screen using thumbnail sizes. The proposed framework serves as a basis of content-based image retrieval on mobile devices. It addresses several important challenges such as hardware and software limitations as well as efficient use of the available network bandwidth.

CAFSM: A Communicating Adaptive Finite State Machine for Personalised Multimedia Streaming

In this paper we present the design of a multimedia presentation system which permits the dynamic adaptation of the content. The Communicating Adaptive Finite State Machine (CAFSM) presented in this paper, has been used to describe the multimedia streaming and presentation system proposed here. This system is driven by a set of messages that are used for communication and co-ordination among the various component machines which form the system

A Service-Oriented Platform for Ubiquitous Personalized Multimedia Provisioning

As multimedia contents are becoming widely used in ubiquitous computing environments among many application fields, e.g., education, entertainment, and live surveillance, the demand of personalized access to these contents has increased dramatically. The provisioning of ubiquitous personalized multimedia services (UPMSs) is a challenging task, which involves a lot of heterogeneous entities ranging from objects, devices to software. In this work, we propose a three-layer software platform, called UPmP to support efficient development and deployment of UPMSs. It fulfills the core functionalities for ubiquitous personalized multimedia provisioning including service management, multimedia recommendation, adaptation, and delivery. We adopt service-oriented approach in building the platform. The enabling technologies such as component representation, service lifecycle management, platform configuration, and service composition are described in detail. The experimental results show that the UPmP is flexible to be configured under different settings.

Personal multimedia services over a common home and access networking environment

This article presents a new end-to-end architecture model that will enable the deployment of a plethora of different multimedia services from diverse suppliers competitively coexisting over a common access and home networking environment. The model is focused on personal multimedia communication services and terminals. The proposed model is a segmentation of the end-to-end multimedia chain into several business segments. The interfaces among segments and functional entities inside each segment are identified and defined in the work. In order to study the impact level of the results achieved, a comparison with the approximation to NGN provided by current standardization bodies in the field (3GPP and TISPAN) is also included in the article. This comparison highlights the advantages of using this model as a solution to offer PMC services.

Everyday concept detection in visual lifelogs: validation, relationships and trends

The Microsoft SenseCam is a small lightweight wearable camera used to passively capture photos and other sensor readings from a user’s day-to-day activities. It captures on average 3,000 images in a typical day, equating to almost 1 million images per year. It can be used to aid memory by creating a personal multimedia lifelog, or visual recording of the wearer’s life. However the sheer volume of image data captured within a visual lifelog creates a number of challenges, particularly for locating relevant content. Within this work, we explore the applicability of semantic concept detection, a method often used within video retrieval, on the domain of visual lifelogs. Our concept detector models the correspondence between low-level visual features and high-level semantic concepts (such as indoors, outdoors, people, buildings, etc.) using supervised machine learning. By doing so it determines the probability of a concept’s presence. We apply detection of 27 everyday semantic concepts on a lifelog collection composed of 257,518 SenseCam images from 5 users. The results were evaluated on a subset of 95,907 images, to determine the accuracy for detection of each semantic concept. We conducted further analysis on the temporal consistency, co-occurance and relationships within the detected concepts to more extensively investigate the robustness of the detectors within this domain.

Editorial: Special Issue on Wireless Personal Multimedia Communications

The evolution of wireless communications is bringing the world to a different way of experiencing and producingmultimedia content. As a result, users are having an increasingly active role in the definition of networks. The chosen topic for the conference that was at the basis of this special issue was thus the pursuit of a really autonomous network infrastructure that will allow the efficient use of the spectrum and reduce energy requirements, exploring new possibilities like cognition and cooperation between users and systems. These developments bring excellent opportunities for the mobile community since new paradigms are needed to support the enormous surge of mobile data in present and future networks. The series of international symposia on Wireless Personal Multimedia Communications (WPMC) have always been a place where people from all over the world can bring their experiences together to develop knowledge about all aspects related to wireless networks

Multimedia Service Provisioning and Personalization on Grid-Based Infrastructures: Now and the Future

This article identifies key technology components for provisioning multimedia services on grid-based infrastructures and discusses needed research to deal with the demands of next-generation multimedia applications.