Now showing items 1-20 of 84

    • A comprehensive ship weather routing system using CMEMS products and A* algorithm 

      Grifoll Colls, Manel; Borén Altés, Clara; Castells Sanabra, Marcel·la (2022-07)
      Article
      Open Access
      We describe the implementation of a comprehensive software for Ship Weather Routing referred to as SIM- ROUTE. The A* pathfinding algorithm is used to optimize the sailing route as a function of the wave action. The aim ...
    • A ship routing system applied at short sea distances 

      Grifoll Colls, Manel; Martínez de Osés, Francesc Xavier (Universidad de Cantabria, 2017-07)
      Article
      Open Access
      New generation of high-resolution meteo-oceanographic predictions provides useful tools for routing of ships in short maritime distances. In this work, the optimal ship routing analysis is investigated in maritime routes ...
    • A simheuristic for the unmanned aerial vehicle surveillance-routing problem with stochastic travel times and reliability considerations 

      Panadero, Javier; Juan Pérez, Ángel Alejandro; Serrat Piè, Carles; Grifoll Colls, Manel; Freixes, Alfons (2019)
      Conference report
      Open Access
      In the unmanned aerial vehicle (UAV) surveillance-routing problem, a limited fleet of UAVs with driving-range limitations have to visit a series of target zones in order to complete a monitoring operation. This operation ...
    • A statistical forecasting model applied to container throughput in a multi-port gateway system: the Barcelona-Tarragona-Valencia case 

      Grifoll Colls, Manel (2019-04)
      Article
      Open Access
      This contribution investigates the container throughput flow in a multi-port gateway system: Barcelona-Tarragona-Valencia (BTV). First, the paper examine the recent dynamics of the total and transshipment flow showing a ...
    • A synergetic combination of measurements and models to assess renewable wind energy in semi enclosed domains 

      Sánchez-Arcilla Conejo, Agustín; González Marco, Daniel; Sospedra Iglesias, Joaquim; Sierra Pedrico, Juan Pablo; Espino Infantes, Manuel; Grifoll Colls, Manel; Pallarès Segarra, Esteve (SARTI, 2013)
      Conference lecture
      Open Access
    • Added resistance parametrizations due to waves in a weather ship routing system 

      Borén Altés, Clara; Falevitch, Loïc; Castells Sanabra, Marcel·la; Grifoll Colls, Manel (2019)
      Conference report
      Open Access
      This contribution compares the parametrization of the wave effect on navigation in a weather ship routing system using three different formulations. The investigation is supported by the use of a ship routing system, the ...
    • An agile simheuristic for the stochastic team task assignment and orienteering problem: applications to unmanned aerial vehicles 

      Panadero, Javier; Juan Pérez, Ángel Alejandro; Grifoll Colls, Manel; Dehghanimohamamdabadi, Mohammad; Freixes, Alfons; Serrat Piè, Carles (2020)
      Conference report
      Open Access
      Efficient coordination of unmanned aerial vehicles (UAVs) requires the solving of challenging operational problems. One of them is the integrated team task assignment and orienteering problem (TAOP). The TAOP can be seen ...
    • Analysis of current intensification in the NorthWest Mediterranean Shelf 

      Mestres Ridge, Marc; Grifoll Colls, Manel; Sánchez-Arcilla Conejo, Agustín (2016-02)
      Article
      Open Access
      Flow intensification episodes lasting more than 12 h are observed occasionally at different locations along the Northwestern Mediterranean coast. In the last years, these pulses have hindered ship operations outside the ...
    • Analysis of factors affecting the effectiveness of oil spill clean-up: A bayesian entwork approach 

      Zhong, Liangxia; Wu, Jiaxin; Wen, Yiqing; Yang, Bingjie; Grifoll Colls, Manel; Hu, Yunping; Zheng, Pengjun (Multidisciplinary Digital Publishing Institute (MDPI), 2023-03-10)
      Article
      Open Access
      Ship-related marine oil spills pose a significant threat to the environment, and while it may not be possible to prevent such incidents entirely, effective clean-up efforts can minimize their impact on the environment. The ...
    • Analysis of taxi travels during an epidemic period using system dynamics method 

      Yao, Haipeng; Huang, Zhen; Ye, Xiaofei; Grifoll Colls, Manel; Liu, Guiyun; Zheng, Pengjun (Multidisciplinary Digital Publishing Institute (MDPI), 2022-03-16)
      Article
      Open Access
      This paper explores the factors influencing taxi travel in the context of COVID-19 from both demand and supply sides and provides a quantitative comparison of taxi travel characteristics and taxi industry operations before ...
    • Annual General Assembly : International Association of Maritime Universities (IAMU) 

      Grifoll Colls, Manel; Martínez de Osés, Francesc Xavier; Castells Sanabra, Marcel·la; Martín Mallofré, Agustí (International Center for Numerical Methods in Engineering (CIMNE), 2018-10-17)
      Conference lecture
      Open Access
      978-84-947311-7-4
    • Assessing nature based solutions for managing coastal bays 

      Fernández-Pedrera Balsells, Marta; Mestres Ridge, Marc; Fernández Tejedor, Margarita; Cerralbo Peñarroya, Pablo; Espino Infantes, Manuel; Grifoll Colls, Manel; Sánchez-Arcilla Conejo, Agustín (2020-05)
      Article
      Restricted access - publisher's policy
      This work investigates the hydrodynamic response of two small and shallow bays located in the Ebro Delta, in order to solve the problems affecting mussel farms, such as the high temperatures reached in the summer period ...
    • Assessment of aquaculture rafts exposure at river-borne substances using numerical modelling 

      Chen, Yang; Grifoll Colls, Manel; Espino Infantes, Manuel; Fernández Tejedor, Margarita; Fernández-Pedrera Balsells, Marta; Sánchez-Arcilla Conejo, Agustín (2022)
      Conference report
      Restricted access - publisher's policy
      Coastal bays and estuaries with aquaculture activity may show spatial variability on the exposure at river-borne substances such as nutrients, pesticides or pollutants. In function of the relative geographical position of ...
    • Breaching of a barrier beach under extreme events: the role of morphodynamic simulations 

      Gracia García, Vicente; García León, Manuel; Grifoll Colls, Manel; Sánchez-Arcilla Conejo, Agustín (Coastal Education Research Foundation (CERF), Coastal Processes Research Group, School of Marine Science and Engineering, Plymouth University, 2013)
      Conference report
      Restricted access - publisher's policy
      A study of three breaching episodes of the Trabucador barrier beach (Spanish Mediterranean coast) is presented. The analysis is done from a modeling perspective using XBEACH and SWAN. The morphodynamic model (XBEACH) has ...
    • Caracterização da agitação marítima ao largo de Maputo 

      Guiloviça, C.B.; Oliveira, Tiago Castro Alves; Palalane, J.; Grifoll Colls, Manel; Gómez Aguar, Jesús Javier; Espino Infantes, Manuel (2011)
      Conference report
      Restricted access - publisher's policy
      O objectivo deste trabalho é fazer a caracterização da agitação marítima ao largo de Maputo. Na ausência de dados de bóias e dados visuais que permitissem executar uma caracterização da agitação a longo prazo optou-se pela ...
    • Characterization of bottom sediment resuspension events observed in a micro-tidal bay 

      Grifoll Colls, Manel; Cerralbo Peñarroya, Pablo; Guillén Aranda, Jorge; Espino Infantes, Manuel; Boye Hansen, Lars; Sánchez-Arcilla Conejo, Agustín (2019-03)
      Article
      Open Access
      In this study we investigate the variability in near-bottom turbidity in Alfacs Bay (in the northwestern Mediterranean Sea). The bay is characterized by a micro-tidal environment and seiching activity that may lead to flow ...
    • Characterizing the evolution of the container traffic share in the mediterranean sea using hierarchical clustering 

      Grifoll Colls, Manel; Karlis, Thanassis; Ortego Martínez, María Isabel (2018-12)
      Article
      Open Access
      This research investigates the traffic share evolution of the container throughput in the Mediterranean ports from 2000 to 2015 considering hierarchical clustering and concentration indexes. Compositional Data analysis ...
    • Characterizing the evolution of the Yangtze River Delta multi-port system using compositional data techniques 

      Huang, Dong; Grifoll Colls, Manel; Feng, Hongxiang; Ortego Martínez, María Isabel; Zheng, Pengjun (2021-09-12)
      Article
      Open Access
      The Yangtze River Delta multi-port system (YMPS) receives increasing attention due to its relevance in world trade and excellent competitiveness in the container traffic market. To insight into the development pattern of ...
    • Coastal ocean forecasting in Spanish ports: the SAMOA operational service 

      García Sotillo, Marcos; Cerralbo Peñarroya, Pablo; Lorente Jiménez, Pablo; Grifoll Colls, Manel; Espino Infantes, Manuel; Sánchez-Arcilla Conejo, Agustín; Álvarez Fanjul, Enrique (2020-01)
      Article
      Open Access
      SAMOA (Sistema de Apoyo Meteorológico y Oceanográfico de la Autoridad Portuaria) is the latest initiative of Puertos del Estado, the Spanish Public State Port Agency, to enhance the delivery of user-customised operational ...
    • Collision risk assessment for ships’ routeing waters: An information entropy approach with Automatic Identification System (AIS) data 

      Feng, Hongxiang; Grifoll Colls, Manel; Yang, Zhongzhen; Zheng, Pengjun (2022-06-01)
      Article
      Open Access
      The ship's routing was adopted to organise marine traffic flow and reduce the risk of collision between ships in crowded waters. With the expansion of the world's fleet, ship traffic in shipping bottleneck and chokepoint ...