1522 research outputs found
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Exploring The Deep Structure of Ethics in Engineering Technology Design and Deployment Methodology
Get PDFThis paper argues that deep structures are embedded in engineering and technology discourse which work against an inclusive and locally relevant engineering ethics. The paper identifies the need for a new, process-oriented, approach to engineering ethics which enables a dynamic, reconfiguration of ethical issues. This approach must be based upon more locally relevant issues and formally recognise the primacy of the other in relation to the self. It proposes the concept of ‘gestalt’ as the basis for a theory of engineering ethics. In order to operationalise this theory the paper also submits the Johari Window as a useful device for engineering groups wishing to address local, ethical issues
An Approach to Rules based Fraud Management in Emerging Converged Networks
Get PDFThis paper examines the problem of managing fraud in emerging converged networks and presents work in progress on implementing a rules based fraud detection system for deployment in a testbed environment. This is done by examining the state of the art in telecoms fraud management and adapting this to emerging IP-based networks and services. Features of this fraud detection implementation include the use of flexible data formats and spreadsheet/workbookbased rules specification with the capability to apply arbitrarily complex rules
Authentication Issues in Multi-Service Residential Access Networks
Get PDFMulti-service residential access networks allow residential customers to choose amongst a variety of service offerings, over a range of Core Networks and subject to user requirements such as QoS, mobility, cost and availability. These issues place requirements on authentication for network access, with a need for mutual authentication of the residential gateway (RG) to the local access point (LAP). The EU-IST project TORRENT is building a testbed providing for multi-service residential access networks in order to demonstrate the benefit of intelligent control, both for the customer and for the network operators and service providers. Adequate security measures are essential in order to secure access to the TORRENT system and services and for QoS provisioning to authorised users. This paper examines the authentication issues for the TORRENT system and presents a public key based authentication protocol for mutually authenticating the RG and the LAP
Usability of Mobile Devices and intelligently adapting to a User's needs
Get PDFUsability is defined in ISO 9241 (1998) as the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction. Usability in relation to mobile services i.e. services that run on Mobile Phones and PDAs must look at the mobile user and surmise what interfaces for mobile services are appreciated and anticipated by the user. This paper will cover the area of usability issues when developing Mobile services. It will look at the mobile users and will propose a system that will store and utilise users' context information to help a user carry out a task. It will formulate a structure that allows applications to learn the significance and interrelations of people, places, objects and documents. By knowing the significance and relationships between objects and data, applications can always provide the user with the most relevant data and build up a context for user interaction
An investigation into QoS provisioning in a DiffServ Network
Get PDFThe objective of this paper is to outline an investigation into the performance of various applications using both Expedited Forwarding (EF) and Assured Forwarding (AF) classification of traffic. Applications will be run on a generic testbed and then, through the use of open source and commercial packages, the traffic will be monitored and a performance evaluation will be carried out of the DiffServ network and the services it provides
Revisiting the Nature of Information Systems: The Urgent Need for a Crisis in IS Theoretical Discourse
Get PDFThis paper suggests that the emergence of large scale integrated business and financial information systems is another aspect of the deconstruction of financial and business realities into a simulacrum. It draws largely upon Baudrillard’s theory of modern society and how this society processes and exploits information in an ever increasing vortex of non-information. IS and management literature argues that large scale information systems such as ERP systems and supply chain integration systems are an important step forward for financial information processing because they integrate the disparate units of business information into a coherent whole. However, whilst this is a very tantalising vision, the reality on the ground seems to be different. This paper posits a theoretical position which adopts neither the traditional positivist, decision theory approach nor the social constructivist theories in which the IS is seen as a primarily social system. Instead the work of French Deconstructivists is used to interpret empirical data gathered by the researcher in a new way suggesting radical new trajectories for information systems research
Triangle Geometry and Jacobsthal Numbers
Get PDFThe convergence properties of certain triangle centres on the Euler line of an arbitrary triangle are studied. Properties of the Jacobsthal numbers, which appear in this process, are examined, and a new formula is given. A Jacobsthal decomposition of Pascal’s triangle is presented
Investigating the Applicability of Mobile IP and Cellular IP for Roaming in Smart Environments
Get PDFIncreased research and development in the field of ubiquitous computing, and in particular smart spaces, has heightened the need for a comprehensive mobility solution. Existing mobility protocols are often categorised as either macro or micro mobility but few, if any, bridge the divide between the two. Mobile IP is at present the IETF proposed standard for delivery of IP packets to mobile devices. However, as a macro mobility protocol, it does not adequately support data delivery to mobile devices that regularly roam within local networks. Cellular IP, a more recent development in mobility, falls under the banner of micro mobility and as such delivers a number of benefits that a macro mobility protocol alone could not. This paper describes a complete mobility architecture accomplished by integrating Mobile IP with Cellular IP and continues by addressing the suitability of this integration for supporting roaming in smart environments
An evaluation of QoS provisioning for UBR applications in a DiffServ Network
No full textIn this paper an understanding of the configuration and performance of a Differentiated Services (DS) network is presented. Strong emphasis is placed on the configuration of the quality of service (QoS) dynamics of expedited forwarding (EF) and assured forwarding (AF) per-hop behaviour (PHB) class types that are required to allow an Unspecified Bit Rate (UBR) application to function effectively - in particular, the configuration of the AF features that mark non-conformant packets with a lower drop priority DS Code Point (DSCP). The usability of these mechanisms is then evaluated in a real, testing environment. DS edge and core routers are configured in a testbed that has been created to emulate a multiple-domain network. Data was then collated from a diverse range of testing procedures and then analysed to allow the authors to draw their conclusions that increased their understanding how a DS network operates
Metadata & Information Management Issues in XML-based Mediation
No full textThe advancement in XML-based mediation has made a significant impact on the area of resource discovery. Search engines have now been provided with new ways to improve resource discovery and new tools to customise resulting content. In the early days of XML, this work was undertaken within the context of the European funded project GESTALT (Getting Educational System Talk Across Leading Edge Technologies). Building on this experience, new improvement came from the European funded project GUARDIANS (Gateway for User Access to Remote Distributed Information And Network Services). However, due to the lack of support for native XML databases and XML querying languages, search facilities were limited. This paper builds upon the achievements of both projects and proposes a solution for XML querying in XQuery