Utilització d'eines Renesas per l'acondicionament del bus CAN a l'instrumentació oceanogràfica

El principal objectiu del projecte, ha estat l’estudi de la comunicació mitjançant el Bus CAN i la representació de dades amb la interfície gràfica LabView. CAN es un protocol de comunicacions sèrie que suporta control distribuït en temps real amb un alt nivell de seguretat i multiplexació. Orientat a la transferència de missatges, i empleat al sector automobilístic, es un sistema de comunicacions d’alta velocitat capaç de reduir considerablement el cablejat. Per realitzar el projecte hem agut de treballar tant amb Software com amb Hardware de diferents companyies, per les diferents parts del projecte. El fet esmentat ens ha dut a adquirir un mínim de coneixements requisits pel funcionament de cadascun d’ells. El Hardware empleat, a girat al voltant del microcontrolador escollit de la firma Renesas Tecnology, companyia especialitzada al sector de l’automòbil. Els passos seguits per dur a terme el projecte: 1:Placa de prova Renesas 3D Starter Kit R8C/11. - Estudi del microcontroladors Renesa R8C/11. - Familiarització amb la placa. - Introducció a la comunicació fent servir el sistema estandaritzat RS232. - Software utilitzat: IAR, KD30, HyperTerminal i LabView. 2:Placa de proves Renesa Starter Kit R8C/23 - Estudi del microcontrolador R8C/23. - Familiarització amb la placa. - Comunicació amb CAN. - Software utilitzat: HEW i LabView. 3:Centraleta CAN(Frontal SEAT Ibiza) - Verificar el funcionament de comunicació fent servir el bus CAN entre l’Starter Kit R8C/23 i la centraleta CAN. 4:Creació d’una PCB a mida que disposi de port SERIE i CAN. - Software utilitzat: Protel, Circuit Cam i Board Master

Making Ostrom’s framework applicable to characterise social ecological systems at the local level

Ostrom’s framework to analyse the sustainability of social-ecological systems has attracted great interest in the last years. It was not conceived to characterise systems, but its nature and structure make it very appealing to be used with this objective. However, its use to characterise three social-ecological systems where common-pool resource management is central created some methodological struggles and difficulties for comparing outcomes. This paper aims to present some adaptations developed for improving the framework’s comprehensiveness and practical applicability at local level, such as a transdisciplinary description of the second-level variables, the definition of a set of third-level variables to facilitate and enrich the descriptions and additional guidelines for gathering the information and planning data searching processes at local level. The whole process of adapting and applying the framework was the result of collaboration among scientists, and local researchers and stakeholders. The adapted framework permitted a comprehensive and comparable characterisation of the socialecological systems analysed and facilitated its use by the local communities

Using Ostrom’s DPs as Fuzzy Sets to Analyse How Water Policies Challenge Community-BasedWater Governance in Colombia

Ostrom’s design principles have been broadly used to analyse the governance of common pool resources. However, they are normally assessed as present or absent. We challenge this assumption by considering them as fuzzy sets where membership scores range from 0 to 1, because, in real situations, the design principles can be present at a certain level. We define categories to assess the level of membership and apply it to a single case study analysing how changes in water policy can affect the community-based management of the Water User Association of Mondomo (Colombia). In rural areas of Colombia, most water and sanitation services are provided by water user associations, wherein civil society has developed governance systems based on active citizen involvement and community-based management. Some of these associations have been operating for decades and are essential pillars of the local social fabric. However, recent changes in the country’s policy and legal framework threaten these long-lasting governance systems. The results show that most of the design principles would suffer important changes that undermine the governance system. Essential principles for sustainable community-based governance, such as the congruence of the rules with local conditions, the local monitoring and sanctioning capacities, the internal conflict-resolution mechanisms and the recognition of the rights to organize, are dramatically reduced after the policy implementation

Tumor mediastinal de células germinales en un paciente con melanoptisis

Figures A and B: Anteroposterior (AP) and Lateral Chest X-ray. Presence of a large mass, apparently from the middle mediastinum (white arrows), diameters of 11 x 15 x 12 cm,  homogeneous density, with the mass effect on other mediastinal structures (black arrows) and compression on the right upper lobe (*), without inner calcifications. Figure C. Chest Computed Tomography, coronal section. In the anterior mediastinum it shows a hypodense, heterogeneous mass, with predominance of soft tissue density, with some calcifications inside, diameters of 14.3 x 10.2 x 12.6 (yellow line) cm, displacing the ascending aorta (blue arrow), the red arrow indicates the brachiocephalic trunk. Figure D. Computed tomography of the chest, axial section. Hypodense, heterogeneous mass, with predominance of soft tissue density, with some calcifications inside, which occupying a large part of the anterior right hemithorax. It is also displacing mediastinal structures such as the trunk of the pulmonary artery (blue arrow), this mass is generating passive atelectasis of the right middle lobe (red arrow).Figuras A Y B: Radiografía de Tórax Anteroposterior (AP) y Lateral. Presencia de gran lesión al parecer del mediastino medio (Flechas blancas), con diámetros de 11 x 15 x 12 cm, de densidad homogénea, con efecto de masa y desviación de todas las estructuras (Flechas negras) y compresión sobre el lóbulo superior derecho (*), sin calcificaciones en su interior. Figura C. Tomografía computarizada de tórax con contraste corte coronal. En la región central del mediastino anterior, se identifica una masa hipodensa, heterogénea, con densidad de predominio de tejido blando, con algunas imágenes de densidad cálcica en su interior, de 14.3 x 10.2 x 12.6 (Línea amarilla) cm, que se encuentra desplazando la aorta ascendente, con trayecto tortuoso (Flecha azul), la flecha roja señala el tronco braquiocefálico. Figura D. Tomografía computarizada de tórax corte axial en ventana mediastinal. Masa hipodensa, heterogénea, con densidad de predominio de tejido blando, con algunas imágenes de densidad cálcica en su interior, la cual se encuentra desplazando y ocupando gran parte de la porción anterior del hemitórax derecho. Así mismo se encuentra desplazando estructuras mediastinales como el tronco de la pulmonar (Flecha azul), esta masa se encuentra generando atelectasia pasiva del lóbulo medio derecho (Flecha roja)

Lessons learned from the deployment of a multihop IEEE 802.11g testbed using COTS devices

Proceedings of: 2010 European Wireless Conference (EW2010), (April 12-15, 2010), Lucca, ItalyA lot of attention has been given to multihop wireless networks lately, but further research is needed. This attention has motivated an increase in the number of 802.11- based deployments, both indoor and outdoor. These testbeds are used to run measurements in order to analyze and understand the limitation and differences between analytical or simulationbased figures and the results from real-life experimentation. In this paper we describe the lessons learned from the deployment of a wireless multihop testbed under the false floor of a laboratory in our Computer Science building. We assess the radio shielding provided by the false floor panels, and run exhaustive and controlled experiments to analyze the performance limits of commercial off-the-shelf hardware. The results obtained confirm that experimental measurements can severely deviate from the expected theoretical values.European Community's Seventh Framework ProgramPartly funded by the Ministry of Science and Innovation of Spain, under the QUARTET project (TIN2009-13992-C02-01)Publicad

Experimental evaluation of SDN-based service provisioning in mobile networks

5G networks will be characterized by their diversity in terms of traffic patterns, multi-tenancy and heterogeneous and stringent traffic requirements. Network softwarization is a key enabler to cope with such management burden, as it provides the ability to control all networking functions through (re)programming, thus providing higher flexibility to meet heterogeneous requirements while keeping deployment and operational costs low. In this article, we aim at experimentally validating how Software Defined Networking (SDN) concepts can greatly simplify network operation in future 5G operator networks. This simplification is achieved by allowing to very easily create and modify network services and thus customize network operation based on the operator’s requirements. The main contribution of this article is to present a prototype of an SDN-based architecture in a real-life test-bed, where we evaluate the associated implementation costs and we confirm through experimentation that novel complex services can be created with relatively low effort.The research leading to these results has been partially performed within the framework of the H2020-ICT-2014-2 projects 5G NORMA and 5G-Crosshaul, and spanish DRONEXT project

An openflow architecture for energy-aware traffic engineering in mobile networks

To cope with the growing traffic demand, future mobile networks will be denser and integrate heterogeneous technologies. However, if not properly engineered, such networks may incur huge energy waste when there is little traffic, and may suffer from an unbearable management burden caused by the variety of technologies integrated. In this article, we propose and implement a novel management architecture for mobile networks based on OpenFlow, which supports resource-on-demand provisioning in a centralized control plane, and hides the technology specifics from the controller through the use of abstractions. The feasibility of the approach is demonstrated by a real-life prototype based on commercial off-the-shelf devices.This work has been partly supported by the European Community through the iJOIN (FP7-ICT-317941) and CROWD (FP7-ICT-318115) projects. Apart from this, the European Commission has no responsibility for the content of this article.Publicad

A CARMEN mesh experience: deployment and results

IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks & Workshops (WoWMoM 2009), June 15-19, 2009, Kos (Greece)When there is no wired connectivity, wireless mesh networks (WMNs) can provide Internet access with lower cost and greater flexibility than traditional approaches. This has motivated the design of new protocols and algorithms for WMNs, and recently the deployment of experimental prototypes. In this paper we add to these previous works with the performance evaluation of a first CARMEN deployment, with the following distinguishing features: i) it is an indoor deployment, ii) it is used by real users to connect to the Internet, and iii) it is built using off-the-shelf hardware. The results show that mesh technology can provide users with a satisfactory Internet experience, and motives further research along this line.European Community's Seventh Framework ProgramPublicad

FloorNet: Deployment and Evaluation of a Multihop Wireless 802.11 Testbed

A lot of attention has been given to multihop wireless networks lately, but further research—in particular, through experimentation—is needed. This attention has motivated an increase in the number of 802.11-based deployments, both indoor and outdoor. These testbeds, which require a significant amount of resources during both deployment and maintenance, are used to run measurements in order to analyze and understand the limitation and differences between analytical or simulation-based figures and the results from real-life experimentation. This paper makes two major contributions: (i) first, we describe a novel wireless multihop testbed, which we name FloorNet, that is deployed and operated under the false floor of a lab in our Computer Science building. This false floor provides a strong physical protection that prevents disconnections or misplacements, as well as radio shielding (to some extent) thanks to the false floor panels—this later feature is assessed through experimentation; (ii) second, by running exhaustive and controlled experiments we are able to analyze the performance limits of commercial off-theshelf hardware, as well as to derive practical design criteria for the deployment and configuration of mesh networks. These results both provide valuable insights of wireless multihop performance and prove that FloorNet constitutes a valuable asset to research on wireless mesh networks.European Community's Seventh Framework ProgramPublicad

An architecture for software defined wireless networking

Software defined networking, characterized by a clear separation of the control and data planes, is being adopted as a novel paradigm for wired networking. With SDN, network operators can run their infrastructure more efficiently, supporting faster deployment of new services while enabling key features such as virtualization. In this article, we adopt an SDN-like approach applied to wireless mobile networks that will not only benefit from the same features as in the wired case, but will also leverage on the distinct features of mobile deployments to push improvements even further. We illustrate with a number of representative use cases the benefits of the adoption of the proposed architecture, which is detailed in terms of modules, interfaces, and high-level signaling. We also review the ongoing standardization efforts, and discuss the potential advantages and weaknesses, and the need for a coordinated approach.The research leading to these results has been partly funded by the European Community's Seventh Framework Programme FP7/2007–2013 under grant agreement no. 317941-project iJOIN, http://www.ict-ijoin.eu/Publicad