Jose Alvarez

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The Meta-Modelling Language is a static object-oriented modelling language whose focus is the declarative definition of languages. It aims to enable the UML metamodel to be precisely defined, and to enable UML to evolve into a family of languages. This paper argues that although MML takes a metamodelling approach to language definition, it cannot be(More)
We present a model-predictive trajectory planning algorithm for following a target boat by an autonomous unmanned surface vehicle (USV) in an environment with static obstacle regions and civilian boats. The planner developed in this work is capable of making a balanced trade-off among the following, possibly conflicting criteria: the risk of losing the(More)
Monitoring techniques have been deeply studied in wired networks using gossip and hierarchical approaches. However, when applied to a MANET, several problematics arise. We present a hybrid distributed monitoring architecture for MANETs. We get inspired of gossip-based and hierarchical-based algorithms for query dissemination and data aggregation. We define(More)
Schizophrenia is associated with high mortality and morbidity. The etiology of schizophrenia remains unclear, studies implicate a multifactorial origin with genetic and environmental factors. The adenomatous polyposis coli (APC) gene has been associated with FAP (familial adenomatous polyposis), and studies have linked it to schizophrenia. However, there(More)
Intrusion Prevention Systems (IPS) are considered essential components that need to assure the reliability of information security. In terms of information security, incrementing the intrusion detection rate on anomaly attacks and decreasing the high false positive rate has been the two major concerns for every sysadmin. The huge amount of logs generated by(More)
The topic of spanning data across different wireless ad hoc networks using distinct routing protocols is still an ongoing effort. Numerous applications can be derived if this is possible. From wireless mesh networks, wireless sensor networks and mobile ad hoc networks (MANETs), can benefit greatly from adjacent or passing through mobile networks. In this(More)
Aquesta tesi doctoral està dedicada a l'estudi d'algunes d'aquestes genera-litzacions des d'un punt de vista no simètric. A la primera part, estudiem de manifest els avantatges de l'´ us de quasi-m` etriques fuzzy en lloc de les m` etriques i quasi-m` etriquescì asiques. Motivated, in part, by some problems from functional analysis, concentration of(More)
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