1522 research outputs found
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The Hankel transform of the sum of two consecutive generalized Catalan numbers
Get PDFWe discuss the properties of the Hankel transformation of a sequence whose elements are the sums of consecutive generalized Catalan numbers and find their values in the closed form
Applying blood glucose homeostatic model towards self-management of IP QoS provisioned networks
Get PDFoai:repository.wit.ie:9Due to the rapid growth of the Internet architecture and the complexities required for network management, the need for efficient resource management is a tremendous challenge. This paper presents a biologically inspired self-management technique for IP Quality of Service (QoS) provisioned network using the blood glucose regulation model of the human body. The human body has the capability to maintain overall blood glucose level depending on the intensity of activity performed and at the same time produce the required energy based on the fitness capacity of the body. We have applied these biological principles to resource management, which includes (i) the ability to manage resources based on predefined demand profile as well as unexpected and fluctuating traffic, and (ii) the ability to efficiently manage multiple traffic types on various paths to ensure maximum revenue is obtained. Simulation results have also been presented to help validate our biologically inspired self-management technique
Macular pigment and ocular biometry
Get PDFThis study is designed to investigate the relationship between macular pigment optical density (MPOD) and ocular biometric parameters. The following details were recorded for 180 healthy subjects: demographic profile; best-corrected visual acuity; refractive status; ocular biometric parameters [axial length (AL), anterior chamber depth (ACD), lens thickness (LT) and vitreous chamber depth (VCD)]; ocular dominance; MPOD; serum lutein (L) and zeaxanthin (Z). The mean MPOD (+/- SD) was 0.307 (0.155) and 0.305 (0.149) in the right and left eyes, respectively. No demonstrable relationship was observed between MPOD and AL, ACD or VCD [AL: r = 0.091, p = 0.225; ACD: r = 0.091, p = 0.227; VCD: r = 0.146, p = 0.051]. There was a significant and inverse relationship between LT and MPOD (r = -0.204; p = 0.008), which was attenuated to non-significance after correction for age and height (r = -0.058; p = 0.466). This study fails to identify an association between MPOD and ocular biometric parameters. This is an important negative finding, which allows investigators to study MP, and its relationship with potentially important variables, without the need to correct for ocular biontetric parameters. (c) 2005 Elsevier Ltd. All rights reserved
Towards a framework for network management applications based on peer-to-peer paradigms
Get PDFThe Madeira project addresses a novel approach for the management of network elements of increasing number, heterogeneity and transience. As next-generation networks exhibit major challenges for today's centralized network management systems, we investigate the fesability of a peer-to-peer (P2P) approach, facilitating self-management and dynamic behaviour of elements within networks. In this short paper we give an overview of the system architecture developed in Madeira and descirbe the key conceptts, like Madeira platform services, Adaptive Management Components and poicies that provide the base for building distributed network management applications.
Keywords - P2P technologies, self-managing networks, policy
based management, Model Driven Architecture (MDA
Confessions of a Movie-Fan: Introspection into the Experiential Consumption of 'Pride & Prejudice'
Get PDFBy using subjective personal introspection, this paper describes the consumption of movies as a holistic experience. After reviewing the current literature, the author is discussing the consumption of movies as a holistic lived experience. He then provides rich evidence by describing his personal lived experience in the consumption of the recently released movie Pride & Prejudice. The introspective data suggest that a number of different factors contribute to the enjoyment of the movie, which include a) the consumed media format, b) the engagement with the movie and its components, c) the individual consumption context, d) the social consumption context, e) the atmosphere during consumption, f) the collection of movie-related memorabilia and g) the intertextuality between the movie experience and the consumer’s personal life experience
Weblogs: Supporting the creation of learning networks in the technology classroom
Get PDFThis study aims to determine the effectiveness of weblogs as a tool for collaborative learning in an online environment, with a particular focus on technology students. Some of the VLEs currently in use in third-level institutions restrict the way in which students interact with one another and with their tutors. The use of weblogs as a tool for collaborative learning can help to overcome several of the shortcomings of traditional VLEs by providing a dynamic, user-friendly way for students to peer review one another’s work and to communicate with their tutors and with one another.
An initial pilot study was conducted over a 10-week period with a group of technology students as part of their Networks course. The first six sessions focused on the technical aspects of blogs (e.g. permalinks, backlinks, RSS feeds, RSS aggregators). In the remaining four sessions, students used their blogs to review one another’s class presentations and to share additional information on their own research with the rest of the class. Laurillard’s conversational framework and Salmon’s online learning model were used as a theoretical basis for describing how weblogs could be incorporated into the existing learning environment. Weblogs can be integrated into several stages of these models, enhancing the collaborative process and supporting the creation of learning networks.
Preliminary findings show that the use of weblogs in a blended learning environment, in conjunction with classroom teaching and a VLE can enhance the learning experience for both students and tutor. The level of interaction between blogs was high, with students frequently commenting on and linking to one another’s blogs, suggesting that weblogs promote collaborative learning in an online environment. Initial feedback from students is also positive: they readily engaged with the new technology and were enthusiastic about its use
An Exploratory Study of Knowledge Management and Management Control in Multi-nationals in Ireland
Get PDFThe aim of this study is to investigate the nature of knowledge management within the multinational sector in Ireland. Further it explores the prevalence of knowledge management, the types of knowledge management activities, the barriers and enablers of KM and the links to performance management. Knowledge has been recognised as an important resource (Drucker, 1993; 1999; Stewart, 1997; Hamel, 2000; Leidner, 2001; Roberts, in Bhimani, 2003). Knowledge is regarded as an emerging concept; understanding and managing knowledge is difficult (Sveiby, 1997; Lynn, 1998; Burton-Jones, 1999; Hildreth et al., 2000; Tidd, 2000; Cormican and O’Sullivan, 2003; Bose, 2004). Management challenges have emerged from a changing economic climate. Globalisation, technology advancements and a move to a service-oriented environment have established what is known as a ‘New Economy.’ Performance management is undergoing change and management techniques are investigated to address these issues. Otley (1999) argues that performance management practices need to be evaluated not just from an economic perspective but from a managerial perspective. Otley and Ferreira (2005) present a management control framework that can be used as a tool to expose some of the emerging challenges. This research has adopted a managerial perspective. A review of the literature was conducted. The research chose a triangulation approach to data collection where both a questionnaire and a case study using semi-structured interviews and a review of internal documentation were employed. The empirical investigation analysed performance management and knowledge management practices within the case organisation. Findings from the research indicated that external accreditation acted as an enabler of knowledge management as did supporting tools and processes including information technology mechanisms. A proposed framework for use as an evaluation tool to determine the maturity of knowledge management in an organisation is an output of this research. Findings identified the controlling influence of the parent organisation as a barrier to knowledge management within the case organisation
SecurIST: Security & Dependability to Empower the Citizen in the 21st Century
No full textTo empower the citizen of the 21st century over the coming decades, Europe's Research Framework programmes are committed to the establishment of a solid security and dependability critical infrastructure. The IST-SecurIST FP6 project is charged with the coordination of a strategic agenda for ICT Security and Dependability R&D for the next framework programme of research and development in Europe (FP7: 2007 - 2013). The SecurIST project has established two fundamental bodies: a European Security and Dependability Task Force, (STF), drawn mainly from FP6 projects, whose role is to identify thematic Areas, and to identify and prioritise challenges within Security and Dependability research, and an Advisory Board (AB), comprising established experts, whose role is to review, advise, enhance and promote the STF and further prioritise areas for future research. This paper outlines the approach used, and gives preliminary results in achieving secure and dependable ICT citizen empowerment
