Optimization of touristic distribution netwoorks using genetic algorithms

The eight basic elements to design genetic algorithms (GA) are described and applied to solve a low demand distribution problem of passengers for a hub airport in Alicante and 30 touristic destinations in Northern Africa and Western Europe. The flexibility of GA and the possibility of creating mutually beneficial feed-back processes with human intelligence to solve complex problems as well as the difficulties in detecting erroneous codes embedded in the software are described. A new three-parent edge mapped recombination operator is used to solve the capacitated vehicle routing problem required for estimating associated costs with touristic distribution networks of low demand. GA proved to be very flexible especially in changing business environments and to solve decision-making problems involving ambiguous and sometimes contradictory constraints.Peer Reviewe

Optimization of touristic distribution netwoorks using genetic algorithms

The eight basic elements to design genetic algorithms (GA) are described and applied to solve a low demand distribution problem of passengers for a hub airport in Alicante and 30 touristic destinations in Northern Africa and Western Europe. The flexibility of GA and the possibility of creating mutually beneficial feed-back processes with human intelligence to solve complex problems as well as the difficulties in detecting erroneous codes embedded in the software are described. A new three-parent edge mapped recombination operator is used to solve the capacitated vehicle routing problem required for estimating associated costs with touristic distribution networks of low demand. GA proved to be very flexible especially in changing business environments and to solve decision-making problems involving ambiguous and sometimes contradictory constraints

Crown Wall Stability of Cube and Cubipod Armored Mound Breakwaters

[EN] Mound breakwaters usually have a concrete crown wall to reduce the amount of quarry material and to improve accessibility. Popular methods to design crown walls consider the same value of the horizontal pressure in the lower edge of the vertical wall and the seaward edge of the crown wall base. Up-lift forces are calculated assuming a triangular pressure distribution with a value given by pressures in the vertical wall. This assumption is reasonable in structures where the foundation level is below the sea water level, but may significantly differ from reality in crown walls with foundation levels above the sea water level. This study focuses on the influence of the foundation level on the crown wall stability analyzing 2D physical tests of cube and Cubipod armored breakwaters with crown wall.The authors acknowledge the financial support of FEDER, Spanish Ministerio de Ciencia, Innovación y Universidades (Grant RTI2018-101073-B-100), SATO (Grupo OHL), Universitat Politècnica de València (Grant SP20180111, Primeros Proyectos de Investigación (PAID-06-18),Vicerrectorado de Investigación, Innovación y Transferencia de la Universitat Politècnica de València) and Generalitat Valenciana (Grant AEST/2019/004)Molines, J.; Medina, JR. (2019). Crown Wall Stability of Cube and Cubipod Armored Mound Breakwaters. Bundesanstalt für Wasserbau. 1-7. https://doi.org/10.18451/978-3-939230-64-9_001S1

Case studies reports: in-depth understanding of the mechanisms for efective interaction with civil society; selected case studies - Deliverable D4.3 (update) of EU Project 662268 "HoNESt"

This deliverable (D4.3) summarizes the key findings from the selected case studies of the HoNESt project in terms of societal perception and societal engagement. Reports from eight countries were selected from a total of twenty, according to the following key criteria: geography (location), political system evolution, and degree of public acceptance. The completed analysis reveals a broad overview of how actors have perceived nuclear developments over the past decades, and which types of engagement tools and mechanisms have been used in each case studied

A review of the analyses of ocean wave groups

[EN] The most common parameters and functions used to characterize wave groups in linear seas are reviewed and interrelated in a unified manner. A three-axes representation of run lengths is used to characterize wave groups using exponential and Markov chain approximations. A relationship between four parameters (Qp, Qe, ¿2, and ¿2) and the correlation coefficient between consecutive wave heights [rHH(1)] is demonstrated. The wave-height function method is reviewed in some detail in order to relate the run length theory with envelope theories. The theoretical estimates used to demonstrate the relationships between the various parameters must be considered as only first-order trends to parameter estimates computed from real wave data due to the statistical variability in these estimates when computed from real wave data.Medina, JR.; Hudspeth, RT. (1990). A review of the analyses of ocean wave groups. Coastal Engineering. 14(6):515-542. https://doi.org/10.1016/0378-3839(90)90033-SS51554214

Robust AR representations of ocean spectra

[EN] A general criterion to qualify ARMA representations of ocean spectra is presented. An objective criterion to qualify simulators becomes the key element to justify the selection or rejection of ARMA representations for practical applications. A technique to calculate robust AR representations appears to be the natural engineering solution to overpass the instability and poor results provided by classical methods. An addition of modicum white noise (0.0025 m0) to the theoretical JONSWAP-type spectra is proved to be sufficient to generate robust AR representations free of instabilities and showing an excellent qualification according to the general criterion justified for most ocean engineering applications.Medina, JR.; Sánchez Carratalá, CR. (1991). Robust AR representations of ocean spectra. Journal of Engineering Mechanics. 117(12):2926-2930. doi:10.1061/(ASCE)0733-9399(1991)117:12(2926)S292629301171

From road obsolescence to contemporary European scenic roads

Object: European non-motorway roads nearby natural and cultural heritage overlapping cross border regions in the European Union. Subject: Redundant roads as an Opportunity for land- use change, landscape identity disclosure and reducedspeed access network for the promotion of cultural tourism. The paper sustains a methodology to alleviate road redundancy by reconverting them into a reduced-speed access network. The aim would be to recreate historical access and circulation flows, which in turn might emphasize a more appropriate visual approach to cultural and natural heritage. Thus, we face the reinterpretation of the ‘scenic route’ concept on the contemporary European transport framework. Our goals are to promote an alternative, reduced-speed tourist network, focused upon culture, heritage and landscape; recycling the redundant roads under consideration.Peer Reviewe

Procesos para la obtención de aditivos alimentarios a partir de residuos de la industria agroalimentaria gallega

La OTRI del Centro Tecnológico Nacional de la Conserva y Alimentación junto con la OTT del Consejo Superior de Investigaciones Científicas, colaboran en el Proyecto AGROCSIC, el cual fue aprobado por el Ministerio de Ciencia y Tecnología y financiado por el Ministerio de Educación y Ciencia. El objetivo principal de esta nueva actuación es estudiar las distintas líneas de trabajo de los Centros del CSIC relacionadas con la alimentación, para transferir sus resultados al sector industrial.La inmensa producción de residuos que supone la normal actividad del hombre es uno de los principales problemas con los que nos encontramos en la actualidad. Por ello se hace necesaria la búsqueda de procesos que permitan utilizar estos residuos para diversas aplicaciones, con lo cual se podrían obtener además importantes ingresos económicos, ya que esta posibilidad crea nuevas fuentes de riqueza que aportan una mayor rentabilidad al proceso industrial de partida.Los autores agradecen al Ministerio de Ciencia y Tecnología (PPQ2000-0688-C05) y a la Xunta de Galicia (PGIDT00 AGR20901PR, incentivos al Proyecto PPQ 2000-0688-C05 y proyecto PGIDIT02AL 40201PR) la financiación concedida.Peer reviewe