Multi-objective optimization of TSK fuzzy models

International audienceIn this paper we propose a hybrid algorithm to optimize the structure of TSK type fuzzy model using backpropagation (BP) learning algorithm and non-dominated sorting genetic algorithm (NSGA-II). In a first step, BP algorithm is used to optimize the parameters of the model (parameters of membership functions and fuzzy rules). NSGA-II is used in a second phase, to optimize the number of fuzzy rules and to fine tune the parameters. A well known benchmark is used to evaluate performances of the proposed modelling approach, and compare it with other modelling approaches

Design of fuzzy controller using genetic algorithms with new mutation operator

International audienceThis paper proposes a new method to design a fuzzy logic controller by genetic algorithms (GAs). The basic idea of this new methodology is to use a new way to mutate the chromosome. Bio-process control problem is used to compare the proposed mutation to traditional mutation. The results show that the proposed mutation efficiently improves GA's performance

Recent Advances in the Chemical Composition and Biological Activities of Propolis

Propolis is a resinous substance from beehive produced by the combination of plants and bee secretions. For a long time, this substance has gotten high attention in traditional and modern medicine. The aim of this review was to discuss the recent advances in the chemical composition and biological activities of propolis. The search for recent publications was based on several databases, such as PubMed, Google Scholar, Science-Direct, and Web of Sciences using relevant keywords. Literature data showed that several new compounds have recently been identified in propolis. The most important biological properties of propolis were discussed in this review, namely antibacterial, antiparasitic, antiviral, antioxidant, antileishmanial, anti-inflammatory, antidiabetic, immunomodulatory, and anticancer. In terms of safety, the data showed low toxicity of propolis even at high doses. Overall, propolis can be considered a promising source of bioactive compounds for drug development

Comprehensive Overview On Nutritional, Phytochemistry And Pharmacological Properties Of Tetraclinis Articulata Masters

Tetraclinis articulata is a medicinal plant distributed from northwestern Africa to southwestern Europe. This article reports previous investigations on T. articulata regarding its taxonomy, botanical description, geographical distribution, traditional use, phytochemistry, biological effects, toxicology, nutritional value, and economic interest. The search of data was based on several scientific databases such as Scopus, Wiley Online, Web of Science, Google Scholar, PubMed, ScienceDirect, SciFinder, and SpringerLink. Indeed, several biological activities were reported for T. articulata extracts and EOs, including antioxidant, antibacterial, antifungal, anticorrosion, cytotoxic, insecticidal, leishmanicidal, larvicidal, anti-inflammatory, antidiarrheal, vasorelaxant, and protective activities. Moreover, some toxicological reports indicated that T. articulata does not present any toxicity. However, other investigations regarding the toxicity, the pharmacokinetic and the pharmacodynamics of T. articulata and its major bioactive compounds are required to validate its pharmacological use. T. articulata also contains some nutritional elements such as mineral compounds, sugar and proteins which could indicate its potential use in the nutraceutical field. All these properties to T. articulata attributed a major economic interest which is used actually in the manufacture of luxury varnishes, pharmaceutical products and in other industrial uses, it is also used in powder form to prepare the surface of certain paper