A Model-Based Approach for the Management of Electronic Invoices

The globalized market pushes companies to expand their business boundaries to a whole new level. In order to efficiently support this environment, business transactions must be executed over the Internet. However, there are several factors complicating this process, such as the current state of electronic invoices. Electronic invoice adoption is not widespread because of the current format fragmentation originated by national regulations. In this paper we present an approach based on Model-Driven Engineering techniques and abstractions for supporting the core functions of invoice management systems. We compare our solution with the traditional implementations and try to analyze the advantages MDE can bring to this specific domain

An automated Model-based Testing Approach in Software Product Lines Using a Variability Language.

This paper presents the application of an automated testing approach for Software Product Lines (SPL) driven by its state-machine and variability models. Context: Model-based testing provides a technique for automatic generation of test cases using models. Introduction of a variability model in this technique can achieve testing automation in SPL. Method: We use UML and CVL (Common Variability Language) models as input, and JUnit test cases are derived from these models. This approach has been implemented using the UML2 Eclipse Modeling platform and the CVL-Tool. Validation: A model checking tool prototype has been developed and a case study has been performed. Conclusions: Preliminary experiments have proved that our approach can find structural errors in the SPL under test. In our future work we will introduce Object Constraint Language (OCL) constraints attached to the input UML mode

A Case Study on Software Evolution towards Service-Oriented Architecture.

The evolution of any software product over its lifetime is unavoidable, caused both by bugs to be fixed and by new requirements appearing in the later stages of the product’s lifecycle. Traditional development and architecture paradigms have proven to be not suited for these continual changes, resulting in large maintenance costs. This has caused the rise of approaches such as Service Oriented Architectures (SOA), based on loosely coupled, interoperable services, aiming to address these issues. This paper describes a case study of the evolution of an existing legacy system towards a more maintainable SOA. The proposed process includes the recovery of the legacy system architecture, as a first step to define the specific evolution plan to be executed and validated. The case study has been applied to a medical imaging system, evolving it into a service model

Long-range, Power-efficient Distributed Flow Measurements Using Chirped-pulse Phase-sensitive Reflectometry

The Optical Networking and Communication Conference & Exhibition,, 11/03/2018-15/03/2018, San Diego, Estados Unidos.We demonstrate a technique allowing to perform distributed wind speed measurements over >17 km with <0.6 km/h uncertainty at only 60 mW/m of power dissipation. Applications in dynamic line rating and catenary monitoring are envisaged.European CommissionMInisterio de Economía y CompetitividadComunidad de MadridUniversidad de Alcal

Single-shot distributed temperature and strain tracking using direct detection phase-sensitive OTDR with chirped pulses

So far, the optical pulses used in phase-sensitive OTDR (ΦOTDR) were typically engineered so as to have a constant phase along the pulse. In this work, it is demonstrated that by acting on the phase profile of the optical pulses, it is possible to introduce important conceptual and practical changes to the traditional ΦOTDR operation, thus opening a door for new possibilities which are yet to be explored. Using a ΦOTDR with linearly chirped pulses and direct detection, the distributed measurement of temperature/strain changes from trace to trace, with 1mK/4nε resolution, is theoreticaly and experimentaly demonstrated. The measurand resolution and sensitivity can be tuned by acting on the pulse chirp profile. The technique does not require a frequency sweep, thus greatly decreasing the measurement time and complexity of the system, while maintaining the potential for metric spatial resolutions over tens of kilometers as in conventional ΦOTDR. The technique allows for measurements at kHz rates, while maintaining reliability over several hours.European CommissionMinisterio de Economía y CompetitividadComunidad de Madri

Centro de salud: arquitectura vernácula en espacios de salud tradicional y convencional

"En la comunidad de Hueyapan ubicada en la sierra de Puebla en la actualidad no cuenta con espacios dedicados a la atención médica adecuados, en su lugar y como única alternativa cuentan con “casas de salud” que son espacios dedicados a la medicina convencional pero que estos no están pensados ni diseñados para cierta actividad. Estos espacios además de carecer de personal para la prestación de servicios de salud adecuados, equipo médico necesario e infraestructura, al ingresar las filas son largas y recurren al mal aprovechamiento de los recursos disponibles, además de que la medicina tradicional tiene más difusión entre los pobladores es más un método accesible y muy importante para su identidad. Es por eso que el estudio que se realizará se enfocara en garantizar el bienestar, integridad y el respeto a la identidad que esta comunidad mantiene, integrando el centro de salud a la comunidad y diseñando los espacios correspondientes a las actividades de la medicina tradicional para ofrecer un espacio adecuado para la atención de la salud e inclusión social"

Distributed gas detection along microstructured optical fibers through photothermal absorption

X Reunión Española de Optoelectrónica (OPTOEL17), 12/07/2017-14/07/2017, Santiago de Compostela, España.Chirped-pulse phase-sensitive optical time domain reflectometry has shown a remarkable performance when applied to dynamic measurements of strain and temperature, recently reaching ranges of several kilometers while interrogating the fiber at acoustic frequencies. In this work, its sensitivity, fast response, and high spatial resolution are exploited to demonstrate the reliability of a selective distributed chemical sensor based on the photothermal effect. The presented scheme performs distributed spectroscopic detection of acetylene along a holey fiber. This potentially gives rise to a new kind of distributed chemical sensors able to track the concentration of chemical species over kilometres.European CommissionMinisterio de Economía y CompetitividadComunidad de Madri

Protecting fiber-optic links from third party intrusion using distributed acoustic sensors

19th International Conference on Transparent Optical Networks, 02/07/2017-06/07/2017, Girona, España.European CommissionMinisterio de Economía y CompetitividadComunidad de Madri

> 10 dB SNR Enhancement in Distributed Acoustic Sensors through First Order Phase Noise Cancellation

The Optical Networking and Communication Conference & Exhibition, 11/03/2018-15/03/2018, San Diego, Estados Unidos.The performance of Rayleigh-based distributed acoustic sensors (DAS) is strongly dependent on the coherence of the laser source. We present a simple methodology to reduce the impact of the laser phase noise in chirped-pulse DAS.European CommissionMinisterio de Economía y Competitivida