Search results for "NETWORK"

Structuration du territoire bourguignon : de l'île à l'isthme

2006

Three principles govern the structuration of the burgundian territory. Its internal organization, with the peripheral location of its most active areas, is similar to the organization of an island. Its situation within national and European space makes it an area of multiple transitions, an unsettled organization, submissive to strong centrifugal forces which can threaten its unity. Lastly, it has always been crossed by numerous links, it is an intermediate space between nodes, strongly marked with networks and exogenous traffic which criss-cross its territory.

On the effects of transmit power control on the energy consumption of WiFi network cards

2009

Transmit power control has been largely proposed as a solution to improve the performance of packet radio systems in terms of increased throughput, spatial reuse and battery lifetime for mobile terminals. However, the benefits of transmit power control schemes on these different performance figures may strongly depend on the employed PHY technology and channel access mechanism. In this paper, we focus on the effects of power control on the energy consumption of WiFi network cards. By means of several experimental tests carried out under different operation conditions and modulation schemes, we try to justify why the reduction of the transmission power has a marginal effect on the overall en…

Dealing with viewers’ complaints: Role, visibility and transparency of PSB Ombudsmen in ten European countries

2017

The article shows the results of a comparative analysis of the complaints management mechanisms offered by ten European Public Service Broadcasting (PSB) systems on their corporate websites. Using a qualitative methodology, it maps the procedures and evaluates the visibility, transparency and dissemination of results. The findings show, firstly, great diversity in terms of responsible election and management, despite the converging media governance. Also noteworthy is the margin of substantial improvement in the transparency and dissemination possibilities, specially relating to the interaction offered by the digital environment. Among the ten public corporations analysed, the BBC is the be…

Impacts des réseaux viaires sur les mobilités urbaines : quelques illustrations

2008

This research aims to find the impact of the network shape and structure on the urban mobilities, in order to fight against the automobile dependency and to include the externalities in the network design. Three examples illustrate this objective. The first one shows the influence of the network shape on the pedestrian urban flows. The second one emphasizes how sensitive to the network structure is the efficiency of a very flexible Demand Responsive Transport. The third example demonstrates that the network metric is favourable to the automobile and how it can be possible to apply an alternative metric, called the “slow metric” to reduce the urban sprawling and the automobile dependency.

A two-phase insertion technique of unexpected customers for a dynamic dial-a-ride problem

2006

Abstract This work deals with a dynamic dial-a-ride problem with time window constraints. In particular, new unplanned requests for service may arise at a vehicle stop and the driver must decide in real-time whether to accept or reject them. For this problem, we have developed a two-phase insertion algorithm based on route perturbations: the first phase, which is run off-line when the vehicle moves between two successive stops, aims at creating a feasible neighborhood of the current route; while the second phase, which is run in real-time every time a new request occurs, inserts, when possible, the delivery stop of the new customer in the current route.

User Preference and Channels Use in the Employment Seeking Process

Trust is a major issue for social capital theory and the word- of mouth concept. This paper compares social network sites with other media under consideration of trust and support. The research evaluates the difference between sources regarding trust and support to explain the situation of social network sites under consideration of the employment seeking process. The aim of this paper is the evaluation of the use of social network sites and private social networks by comparing these with job boards, company information, newspaper and official employment agency web pages. It is to identify the possible differences between information channels and the reasons for the use of different sources…

An Automatic Method for Assessing Spiking of Tibial Tubercles Associated with Knee Osteoarthritis

2022

Efficient and scalable early diagnostic methods for knee osteoarthritis are desired due to the disease’s prevalence. The current automatic methods for detecting osteoarthritis using plain radiographs struggle to identify the subjects with early-stage disease. Tibial spiking has been hypothesized as a feature of early knee osteoarthritis. Previous research has demonstrated an association between knee osteoarthritis and tibial spiking, but the connection to the early-stage disease has not been investigated. We study tibial spiking as a feature of early knee osteoarthritis. Additionally, we develop a deep learning based model for detecting tibial spiking from plain radiographs. We collected an…

Unsupervised network intrusion detection systems for zero-day fast-spreading network attacks and botnets

2015

Today, the occurrence of zero-day and complex attacks in high-speed networks is increasingly common due to the high number vulnerabilities in the cyber world. As a result, intrusions become more sophisticated and fast to detrimental the networks and hosts. Due to these reasons real-time monitoring, processing and intrusion detection are now among the key features of NIDS. Traditional types of intrusion detection systems such as signature base IDS are not able detect intrusions with new and complex strategies. Now days, automatic traffic analysis and anomaly intrusion detection became more efficient in field of network security however they suffer from high number of false alarms. Among all …

Turismo relazionale in tre sistemi territoriali

2007

L'azione di ricerca ha lo scopo di verificare la presenza, nei tre contesti di studio (Val d’Anapo, Valle dell’Halaesa, S. Vito) di un’ offerta turistica che dispone di un sistema di relazioni formali ed informali al fine di ottenere un'idonea “mappatura” dei tre territori per determinare, con rigore scientifico, il fabbisogno turistico in chiave relazionale. Un secondo aspetto riguarda la verifica della dimensione relazionale con riferimento alla domanda turistica effettiva e potenziale delle località. Si vuol stabilire quali e quanti sono le relazioni presenti tra domanda turistica e sistema dell’offerta, sia attuali che potenziali ed in che termini questi contatti siano in grado di influ…

I risultati dell'analisi del turismo relazionale

2007

Sulla base delle risultanze emerse dalla ricerca, verrà effettuata una breve analisi dei tratti peculiari della relazionalità nelle aree indagate, mettendo in relazione gli aspetti che l’hanno determinata, utilizzando il modello multidimensionale. Lo scopo è di evidenziare le potenzialità presenti, le variabili che necessitano di interventi mirati e puntuali e le possibili proposte strategiche per favorire l’implementazione di un piano di sviluppo locale con declinazione turistico-relazionale.