Search results for "Information Systems"

Statistical learning and multiple linear regression model for network selection using MIH

2014

Award of Appreciation; International audience; A key requirement to provide seamless mobility and guaranteeing Quality of Service in heterogeneous environment is to select the best destination network during handover. In this paper, we propose a new schema for network selection based on Multiple Linear Regression Model (MLRM). A horough investigation, on a huge live data collected from GPRS/UMTS networks led to identify the Key Performance Indicators (KPIs) that play the most important role in the handover process. These KPIs are: Received Signal Code Power (RSCP), received energy per chip (Ec/No) and Available Bandwidth (ABW) of the destination network. To extract a handover model from col…

Modelling of the Universe : Simulation of the GPS (The Global Positioning System)

2007

Masteroppgave i informasjons- og kommunikasjonsteknologi 2007 – Høgskolen i Agder, Grimstad ParAbel is a project at Agder University College aims at mathematics and physics on Internet. One of the sub projects named SimReal [2] (Simulation in ‘Realfag’), which currently aims at simulating behaviours and properties of universe for both mathematics and physics studying. This project focuses on simulation of the GPS which is one sub task in SimReal. In this paper, on the one hand, we will set up a GPS simulation model and use it to be a teaching material for learning mathematics and physics. On the other hand, by testing the simulation model among the college students, we will discuss about th…

An MDE Approach for Rapid Prototyping and Implementation of Dynamic Reconfigurable Systems

2015

This article presents a co-design methodology based on RecoMARTE, an extension to the well-known UML MARTE profile, which is used for the specification and automatic generation of Dynamic and Partially Reconfigurable Systems-on-Chip (DRSoC). This endeavor is part of a larger framework in which Model-Driven Engineering (MDE) techniques are extensively used for modeling and via model transformations, generating executable models, which are exploited by implementation tools to create reconfigurable systems. More specifically, the methodological aspects presented in this article are concerned with expediting the conception and implementation of the hardware platform and the integration of corre…

Overcoming barriers for successfully building an open source community : a case study of Open e-PRIOR, an e-procurement software project at the Europ…

2012

Masteroppgave i informasjonssystemer- Universitetet i Agder, 2012 In 2009, the European Commission (EC) released an e-Procurement platform named e-PRIOR (electronic PRocurement Invoicing and Ordering). To support the objectives defined in 2010 e-Government action plan, an open source-version of e-PRIOR, called Open e-PRIOR, was also made available. Open e-PRIOR is a key enabler for secure e-Delivery in the e-Procurement domain, and the project aims to foster adoption of e-Procurement at European level. However, Open e-PRIOR is currently managed by the EC, not taking advantage of its open source nature. Besides, the EC also realized that the Open e-PRIOR project is of value both across secto…

Information Systems Architecture and Technology: Proceedings of 39th International Conference on Information Systems Architecture and Technology – IS…

2019

Abductive innovations in information security policy development : an ethnographic study

2019

Developing organisational information security (InfoSec) policies that account for international best practices but are contextual is as much an opportunity for improving InfoSec as it is a challenge. Previous research indicates that organisations should create InfoSec policies based on best practices (top-down) and simultaneously encourages participatory development (bottom-up). These contradictory suggestions place managers in a dilemma: Should they follow a top-down or bottom-up approach? In this research, we build on an ethnographic approach to study how an innovative engineering company (MachineryCorp) managed the contradiction when the firm developed an InfoSec policy. Drawing on the …

Organizational processes in ICT Management and Evaluation. Experiences with large organizations.

2005

In this study, we describe the managerial and administrative processes relevant in the assessment of cost, efficiency and value of ICT support within and around an end user organisation. Systems of interdependent processes have been proposed to guide the management of ICT, without looking at the organizational activities, outcomes and interdependencies closer. The changed role of ICT in organizations’ activities does no more allow for isolated management of business and ICT domains. Despite of a lot of talk about business alignment of ICT, a permanent link between the mandates of business and IT management remains yet to be established, even in organisations well aware of their information …

Diagnostic performance and reproducibility of T2w based and diffusion weighted imaging (DWI) based PI-RADSv2 lexicon descriptors for prostate MRI.

2017

To examine the diagnostic performance of PI-RADSv2 T2w and diffusion weighted imaging (DWI) based lexicon descriptors, inter-observer agreement for descriptor assignment and diagnostic accuracy of the PI-RADSv2 assessment categories for multiparametric prostate MRI.176 lesions in 79 consecutive patients are analyzed, lesions are histopathologically verified by MRI-ultrasound fusion biopsy. All lesions are rated according to the PI-RADSv2 lexicon, descriptors for T2w and DWI sequences and resulting assessment categories are assigned by two independent blinded radiologists. We perform receiver-operating-characteristic analysis using the assessment categories. To analyze inter-observer agreeme…

Dissemination of Spanish Social Sciences and Humanities Journals

2005

The presence of scholarly journals in international data bases promotes the dissemination of research results and also facilitates requests for specific articles or journals by end users. As scientists seek optimal visibility for their work and wish their results to be published in journals with high circulation, it is important to know which are the leading journals within each scientific area. This paper contains a bibliometric study of scientific journals in the areas of Social Sciences and Humanities that are currently published in Spain, together with information concerning their production and circulation in the different national and international bibliographical data bases, publishe…

Collaboration and Decision Making in Crisis Situations

2016

[EN] Emergencies are critical situations that demand immediate action to avoid adverse consequences to life and property. Recent events around the world highlight the importance of the theme. A key challenge in Emergency Management is decision-making under time pressure, with an overload of unconfirmed, uncertain and conflicting information, including the management of many people, with distinct and possibly fluid roles, in different places. Collaboration in these settings is an interesting element, since emergency response generally involves multiple agencies and the public, which, having different views, protocols and priorities, must act in concert to handle the situation. In addition, a…