Search results for "CRITERIA"
showing 10 items of 582 documents
Influence of the evolutionary optimization parameters on the optimal topology
2016
Topological optimization can be considered as one of the most general types of structural optimization. Between all known topological optimization techniques, the Evolutionary Structural Optimization represents one of the most efficient and easy to implement approaches. Evolutionary topological optimization is based on a heuristic general principle which states that, by gradually removing portions of inefficient material from an assigned domain, the resulting structure will evolve towards an optimal configuration. Usually, the initial continuum domain is divided into finite elements that may or may not be removed according to the chosen efficiency criteria and other parameters like the spee…
Fuzzy Multi-Criteria Decision Making: An entropy-based approach to assess tourism sustainability
2019
In this article, we propose a method for ranking tourist destinations and evaluating their performances under a sustainability perspective: a fuzzy multiple criteria decision-making method is applied for determining sustainability performance values and ranking destinations accordingly. We select a set of sustainability evaluation criteria and use a fuzzy analytic hierarchy process to weight the selected criteria. We also optimize each evaluator’s membership function support by means of a fuzzy entropy maximization criteria. A case study is illustrated and results are compared with two data envelopment analysis–based models. The simplicity of the proposed approach along with the easy reada…
La toma inteligente de decisiones en los procesos de planificación de destinos turísticos de litoral: el plan de infraestructuras turísticas de canar…
2017
El Plan de Infraestructuras Turísticas de Canarias [PITCAN2017-2013] es un encargo de la Dirección General de Infraestructuras Turísticas de la Consejería de Turismo, Cultura y Deportes del Gobierno de Canarias a un grupo de investigadores de la Cátedra de Turismo CajaCanarias‐Ashotel‐Universidad de La Laguna y del grupo de investigación de la ULL ReinvenTUR: renovación e innovación turística, a través de la Fundación General de la Universidad de La Laguna. El objetivo del plan es enumerar y priorizar las infraestructuras turísticas públicas a implementar en el período 2017-2023. Para el desarrollo de este objetivo se ha aplicado un proceso metodológico basado en la participación de agentes…
Milan-out Criteria and Worse Intention-to-Treat Outcome Postliver Transplantation
2019
Background. Milan criteria are widely used for liver transplantation selection in hepatocellular carcinoma but have been recognized to be too restrictive. Milan-out criteria are increasingly being adopted. Our aim was to analyze if liver transplantation waitlisted Milan-out hepatocellular carcinoma patients have different outcome than Milan patients. Methods. Retrospective study including all consecutive patients with hepatocellular carcinoma admitted in the waiting list for liver transplantation between January 2012 and January 2015. We included 177 patients, 146 of which eventually transplanted. Downstaging was achieved in the Milan-out cases (n = 29) before waitlisting. Results. From dia…
Expanded criteria for liver transplantation in patients with cirrhosis and hepatocellular carcinoma
2008
Orthotopic liver transplantation (OLT) selection for patients with hepatocellular carcinoma (HCC) is a matter of debate. The Milan criteria (MC) have been largely adopted by the international community. The main aim of this study was to evaluate the survival rates and recurrence probabilities of a new proposal for criteria (up to 3 tumors, each no larger than 5 cm, and a cumulative tumor burden </= 10 cm). Patients with cirrhosis and HCC included on the waiting list (WL) from 1991 to 2006 were retrospectively analyzed. Outcomes in patients who had tumors within and beyond the MC were compared. The survival analysis was done (1) with the intention-to-treat principle and (2) among transplante…
Clinical symptomatic de novo systemic transthyretin amyloidosis 9 years after domino liver transplantation
2009
Four years ago, Stangou et al. reported a patient who developed clinical symptoms of amyloidosis 8 years after domino liver transplantation (DLT). In order to alleviate the graft shortage, livers from patients with familial amyloidotic polyneuropathy (FAP) are used as domino grafts for other patients under the assumption that several decades will pass before clinical symptoms due to amyloid accumulation emerge. We now report on another case, the third reported case in the literature, of de novo systemic amyloidosis in a 75-year-old woman 9 years after DLT. The patient underwent DLT at 65 years of age for hepatocellular carcinoma exceeding the Milan criteria in hepatitis C cirrhosis. Transar…
Turbo-Roundabouts: a Model to Evaluate Capacity, Delays, Queues and Level of Service
2012
A turbo roundabout is a particular type of roundabout where entering and circulating lanes are bounded by traffic signs and by non-mountable curbs. The physical separation between lanes, both at entries and on the ring, helps to prevent side collisions crossing the roundabout. The main advantages of turbo roundabouts are: i) reduction in the number of potential conflict points; ii) lower speed of vehicles passing through the intersection; iii) safety conditions at the intersection due to lower risk of side-by-side accidents. These aspects make turbo-roundabouts more appropriate than roundabouts when a higher level of safety has to be guaranteed, particularly in presence of relevant pedestri…
Ontology-based clinical decision support system applied on diabetes
2017
Master's thesis Information- and communication technology IKT590 - University of Agder 2017 Medical diagnosis is a multi-step process which is complex as it requires the consideration of many factors. Additionally, the accuracy of diagnosis varies depending on the skill and knowledge a physician has in the medical field. Using ICT solution, the physicians can be assisted so that they can make an accurate decision. Many applications have been developed to enhance physician performance and improve the patient outcome, however, the quality of these applications varies depending on knowledge representation methodology and reasoning approach adopted. Nowadays, ontology is being used in many clin…
Evaluación multicriterio de políticas de uso y gestión de recursos naturales
2014
The purpose of this work is show the characteristics of different environmental economic assessment methodologies, and exposes a case study where possible alternatives addressed to reduce the contamination of a bay with multicriteria approach are evaluated. The results obtained show the effectiveness of multicriteria analysis to evaluate the alternatives for solution of contamination problem in a bay. Economic evaluation of the contamination effects integrated to the environmental, social and economic dimensions through multicriteria techniques allows an alternative planning to solve the environmental problem studied, providing the right decision.
The Complexity of Value and the Evaluation of Complexity: Social Use Value and Multi-criteria Analysis
2018
The “challenge of complexity” is one of the many points of convergence between the Encyclical Laudato si’ and the evolution of post-modern scientific thought. This study aims to analyze how complexity represents the essential element of the profound renewal in the scientific paradigm of the discipline of evaluation, particularly in regard to the theory of value, the categories of value, and the instruments of multi-criteria evaluation. Some contemporary theories of value propose, in fact, a complex source of value, such as surpluses of energy and of information (Ecological Economics) or as the creative and synergistic combination of three surpluses, namely energetic and non-entropic, geneal…