Search results for "TRAVEL"
showing 10 items of 402 documents
GRASP with path relinking for the orienteering problem
2014
In this paper, we address an optimization problem resulting from the combination of the well-known travelling salesman and knapsack problems. In particular, we target the orienteering problem, originated in the context of sport, which consists of maximizing the total score associated with the vertices visited in a path within the available time. The problem, also known as the selective travelling salesman problem, is NP-hard and can be formulated as an integer linear program. Since the 1980s, several solution methods for this problem have been developed and applied to a variety of fields, particularly in routing and tourism. We propose a heuristic method—based on the Greedy Randomized Adapt…
The Value of Trust for Travel Agencies in Achieving Customers' Attitudinal Loyalty
2015
The emergence of e-commerce in the tourism sector has triggered profound changes in the sector's structure. Travel agencies, as the final link in the distribution chain, have been most affected. The globalization of tourism service distributors via the internet has caused competition to intensify and has had strong repercussions. Nevertheless, many travel agencies that also offer online services remain competitive and maintain a loyal customer base. Drawing on data from customers used to purchasing tourism services over the internet, this study analyzed changes in these customers' perceptions of the value offered by traditional travel agencies. Considering the loyalty of clients as a key el…
Influencia de los Travel Vloggers en la formación de la imagen de destino y en el comportamiento del turista
2019
El tema de investigación del estudio gira en torno a las nuevas fuentes de formación de la imagen de destinos turísticos que han aparecido como consecuencia de la naturaleza mediática actual. El entorno social media ha irrumpido como una fuente de información autónoma y orgánica, donde los influencers digitales han adquirido una gran importancia, con el apoyo de plataformas como Youtube que facilitan la creación de contenido y su difusión entre todo tipo de usuarios. En concreto, se analiza cómo la figura del denominado travel vlogger influye sobre la imagen de los destinos turísticos y qué factores condicionan dicha influencia. Para ello, se toman como referencia teorías de comportamiento …
Le storytelling dans la communication touristique d'un pays : L'exemple de l'Ecosse
2015
A travel involves money, time and imagination. It plays a significant role in the creation of the tourists’ identities. Theoretically, touristic communication consists of an organization that formulates a message and an audience, who interprets it, with different motivations but at least an interest. This enunciative relation has twists and turns: perceptions, emotions, influences affect the message and change its intended meaning. The people who advertise the destination must consider these gaps in interpretation to incite potential tourists to discover a place. There is a category of communication called “storytelling”, especially with the contribution of local people, which presents test…
Pero Tafur y Bertrandon de la Broquière en Constantinopla : la imagen ceremonial de María de Trebisonda y los encuentros diplomáticos en torno al con…
2018
Tras la caída de Constantinopla (1453), Pero Tafur y Bertrandon de La Broquière difunden sus libros de viajes, dos de los más importantes europeos escritos en el siglo XV. Ambos habían conocido, entre quince y veinte años antes, al emperador de Grecia, Juan VIII Paleólogo, al Papa Eugenio IV y a otros protagonistas de los concilios de Basilea (1431-1434) y Ferrara-Florencia (1438-1439), que decretaron la unión entre las iglesias romana y griega. Los viajeros fueron, así, testigos, pero también informantes y diplomáticos activos para los intentos de unión religiosa y política, que trató de reavivar el Papa Pio II tras la caída de Constantinopla (1453). Tafur y La Broquière conocieron en Cons…
Design of a 1 kW output power Folded Waveguide TWT operating in ka-band
2019
A Ka-band Serpentine Folded Waveguide Travelling Wave Tube (TWT) has been designed. The imposed design parameters values in terms of high power, high load, wide bandwidth, low weight, along with a structure manufactured with planar technique or by means of a micro milling process, have been obtained. Small signal simulations have been carried out with an in-house software for interaction impedance evaluation. The commercial electromagnetic simulation code CST Suite has been used for dispersion diagram prediction. An optimization of the one-dimensional software, normally used for large-signal simulation in coupled cavity TWTs (“Computer Program for Analysis of Coupled-cavity Travelling-wave-…
Simulating permeability reduction by clay mineral nanopores in a tight sandstone by combining computer X-ray microtomography and focussed ion beam sc…
2021
Solid earth 12(1), 1 - 14 (2021). doi:10.5194/se-12-1-2021
EXPERIMENTAL PROPAGATION FAILURE IN A NONLINEAR ELECTRICAL LATTICE
2004
We consider an experimental setup, modeling the FitzHugh–Nagumo equation without recovery term and composed of a nonlinear electrical network made up of discrete bistable cells, resistively coupled. In the first place, we study experimentally the propagation of topological fronts in the continuum limit where the analytical solution can be obtained. We show that experimental results match the theoretical predictions. The discrete case is then investigated theoretically and in the lattice, emphasizing the pinning of traveling waves.
Towards Multilevel Ant Colony Optimisation for the Euclidean Symmetric Traveling Salesman Problem
2015
Ant Colony Optimization ACO metaheuristic is one of the best known examples of swarm intelligence systems in which researchers study the foraging behavior of bees, ants and other social insects in order to solve combinatorial optimization problems. In this paper, a multilevel Ant Colony Optimization MLV-ACO for solving the traveling salesman problem is proposed, by using a multilevel process operating in a coarse-to-fine strategy. This strategy involves recursive coarsening to create a hierarchy of increasingly smaller and coarser versions of the original problem. The heart of the approach is grouping the variables that are part of the problem into clusters, which is repeated until the size…
An airline connection builder using maximum connection lag with greedy parameter selection
2014
Abstract This paper introduces a methodology for designing an airline connection builder (CB) and adjusting its parameter settings. The objective of the proposed CB is to construct relevant connections that attract passenger demand while avoiding operationally infeasible and commercially irrelevant connections. Using worldwide MIDT booking data, we examined the sensitivity of CB results to the setting of the standard CB parameters maximum connection time and geographical detour. We demonstrated that CB performance can be increased by replacing these two parameters with connection lag, a measure that combines the impact of connection time with geographical detour on the total travel time of …