Guillermo Frontera

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We describe the <i>Patterns+UML</i> tool that has been designed to help students of a first year object-oriented programming (OOP) course to apply design patterns to UML class diagrams, to analyze the code generated after their application, and especially to learn how different design patterns interact each other when they share some classes that play a(More)
OBJECTIVE To identify prognostic risk factors for the development of subsequent bladder recurrence in patients undergoing nephroureterectomy (NU) for upper tract transitional cell carcinoma (TCC). PATIENTS AND METHODS The data of 79 patients who underwent NU for localized upper tract TCC were collected retrospectively, and analysed for clinical and(More)
This paper proposes a new paradigm for the formulation of aircraft trajectory computation and prediction processes. Under this paradigm, an aircraft trajectory can be expressed at different levels of detail using a set of novel intent-related formal languages. These languages can be used for describing different aspects of aircraft motion or the resulting(More)
This paper describes an improved version of our intent-related hierarchy of formal languages designed to describe aircraft trajectories. These languages allow a complete or partial specification of aircraft trajectories at different levels, and the extension of its features described in this paper allows their applicability to define more complex kind of(More)
Four species of bacteria were isolated from one soil of Corrientes (Argentina). They were first classified as Beijerinckia genus based on their cultural, morphological and physiological characteristics. The basic criteria were: growth media without combined nitrogen and fixation of high amounts of gaseous nitrogen (as determined by the acetylene-ethylene(More)
BACKGROUND To analyze the interplay between diet, physical activity and health-related quality of life in a Spanish randomly selected sample of individuals attended in general practitioners offices with intermediate cardiovascular risk. METHODS This study analyzed 314 subjects, aged 35-74 years (50.6% women), from the MARK study, conducted in Spain.(More)
This paper introduces a fast algorithm that finds collision-free 3D paths for unmanned aircraft in urban environments. These environments are represented by a three-dimensional scenario in which obstacles are vertical polyhedra. This algorithm uses a method to reduce the number of obstacles taken into account in the path finding process. This method is(More)
AIM We assessed whether there is an association between the cardio-ankle vascular index (CAVI) score and the carotid intima media thickness (IMT), the pulse wave velocity (PWV) and the central augmentation index (CAIx) that is independent of the subject's cardiovascular risk and pharmacological treatment. METHODS The CAVI score was measured in 500(More)
This paper presents a novel approach for the generation of an aircraft intent that unambiguously describes the behavior of the aircraft during a flight. This behavior is the result of modeling the piloting strategies used by an automation system, such as a flight management system or a pilot, to comply with the set of prescribed constraints included in a(More)