15 Result(s)
within
António Nogueira
English
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Article
Ultrasound Prototype for Improving Germination and Seedling Growth in Tomato and Maize Seeds
The optimization of germination rates and seedling performance is of utmost importance in the agricultural practices. Ultrasound treatment have emerged as a promising technique for seed treatment due to their ...
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Chapter and Conference Paper
Multiscale Internet Statistics: Unveiling the Hidden Behavior
Being able to characterize and predict the behavior of Internet users based only on layer 2 statistics can be very important for network managers and/or network operators. Operators can perform a low level mon...
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Article
Statistical characterization of P2P-TV services and users
P2P-TV systems will certainly contribute to innovate the broadcast TV concept by allowing ubiquitous access to a practically unlimited number of channels, representing an important step forward in the directio...
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Chapter and Conference Paper
Classification of Hidden Users’ Profiles in Wireless Communications
The Internet can be seen as a mix of several services and applications running on top of common protocols. The emergence of several web-applications changed the users’ interaction paradigm by placing them in a...
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Article
Can multiscale traffic analysis be used to differentiate Internet applications?
An accurate map** of Internet traffic to applications can be important for a broad range of network management and measurement tasks, including traffic engineering, service differentiation, performance/failu...
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Article
IPTV service based on a content-zap** paradigm
Internet protocol television (IPTV) generically designates a real-time distribution service for multimedia contents over an IP network, such as the Internet. There are many advantages of IPTV deployment over c...
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Chapter and Conference Paper
Markov Modulated Bi-variate Gaussian Processes for Mobility Modeling and Location Prediction
A general-purpose and useful mobility model must be able to describe complex movement dynamics, correlate movement dynamics with the nodes geographic position and be sufficiently generic to map the characteris...
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Chapter
Markovian Modelling of Internet Traffic
This tutorial discusses the suitability of Markovian models to describe IP network traffic that exhibits peculiar scale invariance properties, such as self-similarity and long range dependence. Three Markov Mo...
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Chapter and Conference Paper
Peer-Level Analysis of Distributed Multimedia Content Sharing
In the last few years, peer-to-peer (P2P) file-sharing applications have become very popular: more users are continuously joining such systems and more objects are being made available, seducing even more user...
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Chapter and Conference Paper
A Framework for Detecting Internet Applications
There are several network management and measurement tasks, including for example traffic engineering, service differentiation, performance or failure monitoring or security, that can greatly benefit with the ...
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Chapter and Conference Paper
Active Traffic Monitoring for Heterogeneous Environments
The traffic management of IP networks faces increasing challenges, due to the occurrence of sudden and deep traffic variations in the network, which can be mainly attributed to the large diversity of supported...
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Chapter and Conference Paper
Multi-time-Scale Traffic Modeling Using Markovian and L-Systems Models
Traffic engineering of IP networks requires the characterization and modeling of network traffic on multiple time scales due to the existence of several statistical properties that are invariant across a range...
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Article
Modeling Network Traffic with Multifractal Behavior
The traffic engineering of IP networks requires accurate characterization and modeling of network traffic, due to the growing diversity of multimedia applications and the need to efficiently support QoS differ...
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Chapter and Conference Paper
Modeling Self-similar Traffic through Markov Modulated Poisson Processes over Multiple Time Scales
In recent years several studies have reported peculiar types of traffic behavior, such as long-range dependence and self-similarity, which can have significant impact on network performance. In this paper we p...
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Article
X-linked adrenoleukodystrophy in patients with idiopathic addison disease
The two main causes of primary adrenal disease are tuberculosis and auto-immune adrenal destruction. The latter is responsible for about 70% of the cases of primary adrenal insufficiency (Addison disease). Com...
