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1 – 10 of 256
Article
Publication date: 1 December 1995

David Flater and Yelena Yesha

Provides a new answer to the resource discovery problem, which arises because although the Internet makes it possible for users to retrieve enormous amounts of…

Abstract

Provides a new answer to the resource discovery problem, which arises because although the Internet makes it possible for users to retrieve enormous amounts of information, it provides insufficient support for locating the specific information that is needed. ALIBI (Adaptive Location of Internetworked Bases of Information) is a new tool that succeeds in locating information without the use of centralized resource catalogs, navigation, or costly searching. Its powerful query‐based interface eliminates the need for the user to connect to one network site after another to find information or to wrestle with overloaded centralized catalogs and archives. This functionality was made possible by an assortment of significant new algorithms and techniques, including classification‐based query routing, fully distributed cooperative caching, and a query language that combines the practicality of Boolean logic with the expressive power of text retrieval. The resulting information system is capable of providing fully automatic resource discovery and retrieval access to a limitless variety of information bases.

Details

Internet Research, vol. 5 no. 4
Type: Research Article
ISSN: 1066-2243

Keywords

Content available
Article
Publication date: 4 September 2009

Linda Cloete

482

Abstract

Details

Library Hi Tech, vol. 27 no. 3
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 19 June 2017

Tsuyoshi Donen, Shingo Otsubo, Ryo Nishide, Ian Piumarta and Hideyuki Takada

The purpose of this study is to reduce internet traffic when performing collaborative Web search. Mobile terminals are now in widespread use and people are increasingly…

1512

Abstract

Purpose

The purpose of this study is to reduce internet traffic when performing collaborative Web search. Mobile terminals are now in widespread use and people are increasingly using them for collaborative Web search to achieve a common goal. When performing such searches, the authors want to reduce internet traffic as much as possible, for example, to avoid bandwidth throttling that occurs when data usage exceeds a certain quota.

Design/methodology/approach

To reduce internet traffic, the authors use a proxy system based on the peer cache mechanism. The proxy shares Web content stored on mobile terminals participating in an ad hoc Bluetooth network, focusing on content that is accessed multiple times from different terminals. Evaluation of the proxy’s effectiveness was measured using experiments designed to replicate realistic usage scenarios.

Findings

Experimental results show that the proxy reduces internet traffic by approximately 20 per cent when four people collaboratively search the Web to find good restaurants for a social event.

Originality/value

Unlike previous work on co-operative Web proxies, the authors study a form of collaborative Web caching between mobile devices within an ad hoc Bluetooth network created specifically for the purpose of sharing cached content, acting orthogonally to (and independently of) traditional hierarchical Web caching.

Details

International Journal of Web Information Systems, vol. 13 no. 2
Type: Research Article
ISSN: 1744-0084

Keywords

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

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…

1328

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

Article
Publication date: 20 November 2009

Ashish Raniwala, Gefan Zhang, Ashwini Sridhar, Jian P. Zheng and Tzi‐cker Chiueh

This paper aims to describe the design, implementation, and evaluation of a novel file and application sharing system that enables a group of mobile stations that do not…

Abstract

Purpose

This paper aims to describe the design, implementation, and evaluation of a novel file and application sharing system that enables a group of mobile stations that do not have any prior security association and infrastructure support, to form a secure collaboration workspace, and share files and application content instantly with minimal human intervention.

Design/methodology/approach

The paper looks at the system implementation and experimentation.

Findings

WShare can automatically establish a peer‐to‐peer network among the participating mobile stations, and provides a transparent shared file repository through which the mobile stations can securely exchange files with simple drag‐and‐drop operations. This file sharing application can also be specialized to support the same file beaming service over wireless LAN as that provided by Palm PDAs over infrared links. On the application sharing front, WShare supports a general remote execution mechanism that can synchronize the state of multiple instances of a standard productivity application, such as PowerPoint, Excel, and Word, across different machines. Finally for sharing generic applications, WShare also integrates virtual network computing with reliable wireless broadcast to provide a user‐interface level sharing mechanism. Performance measurement on the fully operational WShare prototype shows that a collaboration workspace among five mobile nodes can be set up within 3.5 seconds.

Originality/value

This paper proposes a new communication paradigm and presents the design, implementation, and evaluation of a fully‐working prototype.

Details

International Journal of Pervasive Computing and Communications, vol. 5 no. 4
Type: Research Article
ISSN: 1742-7371

Keywords

Article
Publication date: 23 November 2010

Nils Hoeller, Christoph Reinke, Jana Neumann, Sven Groppe, Christian Werner and Volker Linnemann

In the last decade, XML has become the de facto standard for data exchange in the world wide web (WWW). The positive benefits of data exchangeability to support system and…

Abstract

Purpose

In the last decade, XML has become the de facto standard for data exchange in the world wide web (WWW). The positive benefits of data exchangeability to support system and software heterogeneity on application level and easy WWW integration make XML an ideal data format for many other application and network scenarios like wireless sensor networks (WSNs). Moreover, the usage of XML encourages using standardized techniques like SOAP to adapt the service‐oriented paradigm to sensor network engineering. Nevertheless, integrating XML usage in WSN data management is limited by the low hardware resources that require efficient XML data management strategies suitable to bridge the general resource gap. The purpose of this paper is to present two separate strategies on integrating XML data management in WSNs.

Design/methodology/approach

The paper presents two separate strategies on integrating XML data management in WSNs that have been implemented and are running on today's sensor node platforms. The paper shows how XML data can be processed and how XPath queries can be evaluated dynamically. In an extended evaluation, the performance of both strategies concerning the memory and energy efficiency are compared and both solutions are shown to have application domains fully applicable on today's sensor node products.

Findings

This work shows that dynamic XML data management and query evaluation is possible on sensor nodes with strict limitations in terms of memory, processing power and energy supply.

Originality/value

The paper presents an optimized stream‐based XML compression technique and shows how XML queries can be evaluated on compressed XML bit streams using generic pushdown automata. To the best of the authors' knowledge, this is the first complete approach on integrating dynamic XML data management into WSNs.

Details

International Journal of Web Information Systems, vol. 6 no. 4
Type: Research Article
ISSN: 1744-0084

Keywords

Article
Publication date: 29 March 2013

Aleksandar Hudic, Shareeful Islam, Peter Kieseberg, Sylvi Rennert and Edgar R. Weippl

The aim of this research is to secure the sensitive outsourced data with minimum encryption within the cloud provider. Unfaithful solutions for providing privacy and…

2876

Abstract

Purpose

The aim of this research is to secure the sensitive outsourced data with minimum encryption within the cloud provider. Unfaithful solutions for providing privacy and security along with performance issues by encryption usage of outsourced data are the main motivation points of this research.

Design/methodology/approach

This paper presents a method for secure and confidential storage of data in the cloud environment based on fragmentation. The method supports minimal encryption to minimize the computations overhead due to encryption. The proposed method uses normalization of relational databases, tables are categorized based on user requirements relating to performance, availability and serviceability, and exported to XML as fragments. After defining the fragments and assigning the appropriate confidentiality levels, the lowest number of Cloud Service Providers (CSPs) is used required to store all fragments that must remain unlinkable in separate locations.

Findings

Particularly in the cloud databases are sometimes de‐normalised (their normal form is decreased to lower level) to increase the performance.

Originality/value

The paper proposes a methodology to minimize the need for encryption and instead focus on making data entities unlinkable so that even in the case of a security breach for one set of data, the privacy impact on the whole is limited. The paper would be relevant to those people whose main concern is to preserve data privacy in distributed systems.

Details

International Journal of Pervasive Computing and Communications, vol. 9 no. 1
Type: Research Article
ISSN: 1742-7371

Keywords

Article
Publication date: 8 September 2022

Colin Conrad, Rachel Moylan and Gabriel O. Diaz

Many universities implemented institutional social networking apps as an alternative to in-person social experiences during the COVID-19 pandemic. Therefore, this study…

Abstract

Purpose

Many universities implemented institutional social networking apps as an alternative to in-person social experiences during the COVID-19 pandemic. Therefore, this study aims to explore previously identified factors that influenced intentions to form collective actions, also known as we-intentions, on such social networking apps and their influence on student satisfaction with the app artifact.

Design/methodology/approach

Students from across a large university were invited to participate in a survey. Responses from 915 students who reported using the app were analyzed using a maximum likelihood covariance-based structural equation model. Analysis was conducted using the R programming language's psych, lavaan, and semTools packages.

Findings

The authors found that we-intentions are positively associated with recent app use and with student satisfaction with the app. Group norms were found to significantly influence the formation of we-intentions, while social identity is positively associated with both we-intentions and satisfaction.

Originality/value

The paper provides evidence that past research generalizes to the context of university mobile social networks and identifies a relationship between we-intentions and satisfaction in this context. It also provides practical insight into factors that influence we-intentions, and subsequently students' online education experience, in the context of a university's institutional mobile social network.

Details

Library Hi Tech, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 19 June 2009

Quan Le‐Trung, Paal E. Engelstad, Vinh Pham, Tor Skeie, Amirhosein Taherkordi and Frank Eliassen

The purpose of this paper is to describe the required functionalities on providing internet connectivity and mobility management for mobile ad hoc networks (MANETs)…

Abstract

Purpose

The purpose of this paper is to describe the required functionalities on providing internet connectivity and mobility management for mobile ad hoc networks (MANETs), present discovered problems such as inconsistent contexts, and provide the corresponding solutions. It also provides a hybrid metric for the load‐balance of intra/inter‐MANET traffic over multiple internet gateways (IGWs).

Design/methodology/approach

The paper uses both mathematical analyses and simulations to discover the required functionalities and problems on providing internet connectivity and mobility management for MANETs. The proposed hybrid metric for IGW selection is a replacement of the shortest hop‐count (HC) metric, and consider three factors: HC distance, intra‐MANET traffic, and inter‐MANET traffic.

Findings

Simulation results show that ad hoc routing protocols, using the proposed metric, get better performance in terms of packet delivery ratio and transmission delay, at the cost of slightly increased signalling overhead.

Research limitations/implications

In the assessment, simulation results are taken from two mobility scenarios, and the hybrid metric is integrated into only reactive ad hoc routing. Thus, more case studies need to be carried out to demonstrate the outcomes of the proposed metric compared with others.

Practical implications

This paper provides the needed functionalities for broadening the richness of MANET applications to internet users, and vice verse.

Originality/value

This paper contributes to the research on internetworking and mobility management between MANETs and the internet.

Details

International Journal of Web Information Systems, vol. 5 no. 2
Type: Research Article
ISSN: 1744-0084

Keywords

1 – 10 of 256