Search results

1 – 8 of 8
To view the access options for this content please click here
Article
Publication date: 3 November 2014

Dimitris N. Kanellopoulos

The purpose of this paper is to provide a tutorial and survey on recent advances in multimedia networking from an integrated perspective of both video networking and…

Abstract

Purpose

The purpose of this paper is to provide a tutorial and survey on recent advances in multimedia networking from an integrated perspective of both video networking and building digital video libraries. The nature of video networking, coupled with various recent developments in standards, proposals and applications, poses great challenges to the research and industrial communities working in this area.

Design/methodology/approach

This paper presents an insightful analysis for recent and emerging multimedia applications in digital video libraries and on video coding standards and their applications in digital libraries. Emphasis is given on those standards and mechanisms that enable multimedia content adaptation fully interoperable according to the vision of Universal Multimedia Access vision.

Findings

The tutorial helps elucidate the similarities and differences among the considered standards and networking applications. A number of research trends and challenges are identified, and selected promising solutions are discussed. This practice would needle further thoughts on the development of this area and open-up more research and application opportunities.

Research limitations/implications

The paper does not provide methodical studies of networking application scenarios for all the discussed video coding standards and Quality of Service (QoS) management mechanisms.

Practical implications

The paper provides an overview of which technologies/mechanisms are being used broadly in networking scenarios of digital video libraries. The discussed networking scenarios bring together video coding standards and various emerging wireless networking paradigms toward innovative application scenarios.

Originality/value

QoS mechanisms and video coding standards that support multimedia applications for digital video libraries need to become well-known by library managers and professional associations in the fields of libraries and archives. The comprehensive overview and critiques on existing standards and application approaches offer a valuable reference for researchers and system developers in related research and industrial communities.

Details

The Electronic Library, vol. 32 no. 6
Type: Research Article
ISSN: 0264-0473

Keywords

To view the access options for this content please click here
Article
Publication date: 15 February 2011

Dimitris N. Kanellopoulos

This paper aims to provide an overview of representative multimedia applications in the cultural heritage sector, as well as research results on quality of service (QoS…

Abstract

Purpose

This paper aims to provide an overview of representative multimedia applications in the cultural heritage sector, as well as research results on quality of service (QoS) mechanisms in internet protocol (IP) networks that support such applications.

Design/methodology/approach

The paper's approach is a literature review.

Findings

Cultural heritage multimedia applications require greater bandwidth capacity, especially where multiple users share the connections. For such applications, scalability and reliability of quality of service depend on packet‐level QoS mechanisms operating in a full end‐to‐end basis.

Research limitations/implications

The paper provides a foundation for future research directions in the professional communication context. For instance, the QoS mechanisms in possible network infrastructures could be used to explore effective multimedia data dissemination across cultural heritage institutions.

Practical implications

The paper provides an overview of which technologies/mechanisms are being used most broadly and which might provide the most potential for cultural heritage institutions managers considering experimenting in the multimedia communications area.

Originality/value

QoS mechanisms that support multimedia applications in the cultural heritage sector need to become well known by cultural heritage institutions managers and professional associations in the fields of libraries, museums and archives. This paper provides a useful overview of the topic.

Details

Program, vol. 45 no. 1
Type: Research Article
ISSN: 0033-0337

Keywords

To view the access options for this content please click here
Article
Publication date: 4 January 2011

Dimitris N. Kanellopoulos

The purpose of the paper is to examine evidence in order to discover if teleworking has a pro‐poor growth impact – reducing inequality. For this reason, the paper seeks to…

Abstract

Purpose

The purpose of the paper is to examine evidence in order to discover if teleworking has a pro‐poor growth impact – reducing inequality. For this reason, the paper seeks to propose a telework taxonomy for the poor and research questions that trigger future empirical research on poor teleworkers.

Design/methodology/approach

The paper's approach is a literature review. The focused literature includes articles that analyze telework issues with a potential for the poor. Such issues are mainly workforce and organizational issues.

Findings

There is some evidence that provision of teleworking infrastructure has a dramatic effect on the income and quality of life of the rural poor. Special knowledge management tasks and types of telework can be proper for poor people. Economic and organizational aspects of telecentres for poor workers must be analyzed in depth.

Research limitations/implications

The paper provides a foundation for future research directions in the teleworking domain for the poor. For instance, the discussed implementation aspects of teleworking and the proposed telework taxonomy for the poor as well as the proposed research questions could be used to explore effective penetration of teleworking in poor countries. New conceptual frameworks for implementing telework for the poor can be generated.

Practical implications

An overview is provided of which issues/prerequisites are being considered most broadly and which might provide the most potential for policy makers/managers fighting poverty by using telework.

Originality/value

The paper contributes to the teleworking literature by analyzing how telework can be pro‐poor. It provides a useful overview of the topic. It proposes a telework taxonomy for the poor and three research questions that trigger future empirical research on poor teleworkers.

Details

Journal of Enterprise Information Management, vol. 24 no. 1
Type: Research Article
ISSN: 1741-0398

Keywords

To view the access options for this content please click here
Article
Publication date: 3 March 2020

Dimitris Kanellopoulos

Information-centric networking (ICN) is an innovative paradigm for the future internet architecture. This paper aims to provide a view on how academic video lectures can…

Abstract

Purpose

Information-centric networking (ICN) is an innovative paradigm for the future internet architecture. This paper aims to provide a view on how academic video lectures can exploit the ICN paradigm. It discusses the design of academic video lectures over named data networking (NDN) (an ICN architecture) and speculates their future development. To the best of author’s knowledge, a similar study has not been presented.

Design/methodology/approach

The paper is a visionary essay that introduces the background, elaborates the basic concepts and presents the author’s views and insights into academic video lectures that exploit the latest development of NDN approach and its applications.

Findings

The ICN paradigm is closely related to the levels of automation and large-scale uptake of multimedia applications that provide video lectures. Academic video lectures over NDN have: improved efficiency, better scalability with respect to information/bandwidth demand and better robustness in challenging communication scenarios. A framework of academic video lectures over NDN must take into account various key issues such as naming (name resolution), optimized routing, resource control, congestion control, security and privacy. The size of the network in which academic video lectures are distributed, the content location dynamics and the popularity of the stored video lectures will determine which routing scheme must be selected. If semantic information is included into academic video lectures, the network dynamically may assist video (streaming) lecture service by permitting the network to locate the proper version of the requested video lecture that can be better delivered to e-learners and/or select the appropriate network paths.

Practical implications

The paper helps researchers already working on video lectures in finding a direction for designing and deploying platforms that will provide content-centric academic video lectures.

Originality/value

The paper pioneers the investigation of academic video lecture distribution in ICN and presents an in-depth view to its potentials and research trends.

Details

Information Discovery and Delivery, vol. 48 no. 4
Type: Research Article
ISSN: 2398-6247

Keywords

To view the access options for this content please click here
Article
Publication date: 28 September 2012

Dimitris Kanellopoulos

This paper aims to propose a system for the semantic annotation of audio‐visual media objects, which are provided in the documentary domain. It presents the system's…

Abstract

Purpose

This paper aims to propose a system for the semantic annotation of audio‐visual media objects, which are provided in the documentary domain. It presents the system's architecture, a manual annotation tool, an authoring tool and a search engine for the documentary experts. The paper discusses the merits of a proposed approach of evolving semantic network as the basis for the audio‐visual content description.

Design/methodology/approach

The author demonstrates how documentary media can be semantically annotated, and how this information can be used for the retrieval of the documentary media objects. Furthermore, the paper outlines the underlying XML schema‐based content description structures of the proposed system.

Findings

Currently, a flexible organization of documentary media content description and the related media data is required. Such an organization requires the adaptable construction in the form of a semantic network. The proposed approach provides semantic structures with the capability to change and grow, allowing an ongoing task‐specific process of inspection and interpretation of source material. The approach also provides technical memory structures (i.e. information nodes), which represent the size, duration, and technical format of the physical audio‐visual material of any media type, such as audio, video and 3D animation.

Originality/value

The proposed approach (architecture) is generic and facilitates the dynamic use of audio‐visual material using links, enabling the connection from multi‐layered information nodes to data on a temporal, spatial and spatial‐temporal level. It enables the semantic connection between information nodes using typed relations, thus structuring the information space on a semantic as well as syntactic level. Since the description of media content holds constant for the associated time interval, the proposed system can handle multiple content descriptions for the same media unit and also handle gaps. The results of this research will be valuable not only for documentary experts but for anyone with a need to manage dynamically audiovisual content in an intelligent way.

To view the access options for this content please click here
Article
Publication date: 10 February 2012

Dimitris Kanellopoulos and Sotiris Kotsiantis

The aim of this work is to evaluate Greek newspaper websites using clustering and a number of criteria obtained from the Alexa search engine. Furthermore, a recommendation…

Abstract

Purpose

The aim of this work is to evaluate Greek newspaper websites using clustering and a number of criteria obtained from the Alexa search engine. Furthermore, a recommendation approach is proposed for matching Greek online newspapers with the profiles of potential readers. The paper presents the implementation and validation of a recommender tool that suggests to a user (based on age, education and income) an optional Greek newspaper's website to read.

Design/methodology/approach

A total of 25 newspaper websites were selected from the Greek information bank http://edoellada.gr. After investigating these websites one by one, this number was decreased to 16 websites due to their printing prevention, cessation or no coverage by Alexa.

Findings

Based on data obtained from Alexa, the Naftemporiki newspaper has the highest traffic rank and the Eleftherotypia newspaper the largest number of links among others. The Macedonia newspaper has the largest number of foreign users. The results of the study also show that most newspaper websites' visitors come from the UK. The expectation‐maximisation (EM) clustering algorithm classifies the 16 websites into two groups based on some common characteristics.

Research limitations/implications

The proposed recommendation approach is generic because it can be applied as a recommendation solution on various types of website, such as educational or commercial. However, slight adjustments are needed depending on the nature of recommending websites.

Practical implications

A website administrator of an online newspaper can adapt the newspaper's features such as content and layout according to the prevailing user profile of the online newspaper. For example, a website administrator of an online newspaper whose dominant user education is “no‐college” should enable the writing style of this newspaper in a more naive way. The administrator can also add advertisements that are more suitable to readers aged between 35 and 55 years, if the most frequent age of users of this online newspaper is between 35 and 55.

Originality/value

The results of this research will be important not only to administrators of Greek newspaper websites but also to anyone with a need to increase the usage of a website.

Details

Program, vol. 46 no. 1
Type: Research Article
ISSN: 0033-0337

Keywords

To view the access options for this content please click here
Article
Publication date: 1 August 1997

Nikitas Patiniotis and Dimitris Stavroulakis

Vocational education in Greece has been developed only recently, mainly through foreign influences. Delay is largely attributed to idiomorphic employment patterns…

Abstract

Vocational education in Greece has been developed only recently, mainly through foreign influences. Delay is largely attributed to idiomorphic employment patterns, favouring low‐skilled labour, and to culture, prompting youths to university education. Traditional lack of continuity of the national education policy, as well as persistent low financing of vocational education by the state, has resulted in the accumulation of long‐standing problems. This situation has added up to a sluggish vocational education organization, more or less incapable of effectively tackling crucial social issues like unemployment and the challenge of new technologies.

Details

Journal of European Industrial Training, vol. 21 no. 6/7
Type: Research Article
ISSN: 0309-0590

Keywords

To view the access options for this content please click here
Book part
Publication date: 22 October 2020

Stamatia (Matina) Zestanaki

This chapter examines the potential corelation between technologically led changes in media ecologies and changes in mediated mobilisation compared to the traditional…

Abstract

This chapter examines the potential corelation between technologically led changes in media ecologies and changes in mediated mobilisation compared to the traditional forms of citizen mobilisation, namely political protest mobilisation. Based on previous empirical research on the Aganaktismenoi movement (Zestanaki, 2019), I investigate the effect this new form of mass mobilisation has on participants' political sophistication with an emphasis on the measurable indication or political efficacy, a recognised political communication tool. I argue that mobilising large crowds within an ideological void enabled by the heavily mediatised current environment is becoming a challenging democratic endeavour. This approach opens new possibilities for a multiparadigm, more advanced research on media sociology and political communication, from a critical intellectual perspective.

1 – 8 of 8