Experimentos sobre la evolución del lenguaje

En este proyecto implementamos modelos sencillos de evolución de la comunicación en una población para estudiar distintos aspectos relacionados con la evolución del lenguaje y su ventaja evolutiva. Consideramos algunos trabajos que han aparecido sobre el tema, implementando el modelo propuesto con un algoritmo evolutivo. A través de la simulación computacional tratamos de emular sistemas de conocimiento innato, sistemas de aprendizaje y sistemas de aprendizaje con selección natural para el estudio de la evolución real del lenguaje. [ABSTRACT] In this project we implements simple models of evolution of the communication in a population to study different aspects related to the evolution of the language and the evolutionary advantage. We consider some of the works that have been appeared related to the subject, implementing the proposed model by means of an evolutive algorithm. Through the computational simulation we try to emulate systems of innate knowledge, learning systems and learning systems with natural selection for the study of the real evolution of the language

Total antioxidant capacity of the diet is inversely and independently related to plasma concentration of high-sensitivity C-reactive protein in adult Italian subjects

Inflammation, a risk factor for cardiovascular disease, is associated with low plasma levels of antioxidant vitamins. In addition to vitamins, other antioxidants modulate the synthesis of inflammatory markers in vitro and contribute to the total antioxidant capacity (TAC) of a diet. However, the relationship between dietary TAC and markers of inflammation has never been evaluated in vivo. We investigated the relationship between dietary TAC and markers of systemic (high-sensitivity C-reactive protein (hs-CRP), leucocytes) and vascular (soluble intercellular cell adhesion molecule-1) inflammation in 243 non-diabetic subjects. General Linear Model (GLM) analysis showed a significant (P=0·005) inverse relationship between hs-CRP and quartiles of energy-adjusted dietary TAC, even when recognized modulating factors of inflammation, namely alcohol, fibre, vitamin C, α-tocopherol, β-carotene, BMI, waist circumference, HDL-cholesterol, hypertension, insulin sensitivity and plasma β-carotene, were included in the model as covariates (P=0·004). The relationship was stronger for subjects with hypertension (P=0·013 v. P=0·109 for normotensive individuals). Among dietary factors, TAC was significantly higher (5·3 (sd 3·0) v. 4·9 (sd 2·7) mmol Trolox/d; P=0·026) in subjects with low plasma hs-CRP (range: 0·0–4·1 mg/l) than in subjects with high plasma hs-CRP (range: 4·2–27·8 mg/l). We conclude that dietary TAC is inversely and independently correlated with plasma concentrations of hs-CRP and this could be one of the mechanisms explaining the protective effects against CVD of antioxidant-rich foods such as fruits, whole cereals and red wine. This could be of particular significance for subjects with high blood pressure

Guidance for the scientific requirements for health claims related to antioxidants, oxidative damage and cardiovascular health

EFSA asked the Panelon Dietetic Products, Nutrition and Allergies (NDA) to update the guidance on the scientific requirements for health claims related to antioxidants, oxidative damage and cardiovascular health published in 2011. The update takes into accounts experiences gained with evaluation of additional health claim applications related to antioxidants, oxidative damage and cardiovascular health, and the information collected from a Grant launched in 2014. This guidance is intended to assist applicants in preparing applications for the authorisation of health claims related to the antioxidants, oxidative damage and cardiovascular health. The document was subject to public consultation (from 12 July to 3 September 2017). This document supersedes the guidance on the scientific requirements for health claims related to antioxidants, oxidative damage and cardiovascular health published in 2011. It is intended that the guidance will be further updated as appropriate in the light of experience gained from the evaluation of health claims

Scientific and technical guidance for the preparation and presentation of an application for authorisation of an infant and/or follow\u2010on formula manufactured from protein hydrolysates

Following a request from the European Commission, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to provide scientific and technical guidance for the preparation and presentation of applications for authorisation of infant and/or follow-on formula manufactured from protein hydrolysates. This guidance document addresses the information and data to be submitted to EFSA on infant and follow-on formulae manufactured from protein hydrolysates with respect to the safety and suitability of the specific formula and/or the formula's efficacy in reducing the risk of developing allergy to milk proteins. The guidance will be further reviewed and updated with the experience gained from the evaluation of specific applications for authorisation, and in the light of future Community guidelines and legislation. The NDA Panel endorsed a draft of this scientific opinion on 14 December 2016 for public consultation. The draft document has been revised and updated according to the comments received, where appropriate. (C) 2017 European Food Safety Authority. EFSA Journal published by John Wiley and Sons Ltd on behalf of European Food Safety Authority

Scientific Opinion on the safety and suitability for use by infants of follow‐on formulae with a protein content of at least 1.6 g/100 kcal

Following a request from the European Commission, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver a scientific opinion on the safety and suitability for use by infants of follow-on formulae (FOF) based on cow's milk intact protein with a protein content of at least 1.6 g/100 kcal (rounded value) that meet otherwise the requirements of relevant EU legislation. If the formula under evaluation is considered to be safe and suitable for use by infants, the NDA Panel is also asked to advise on whether FOF based on goat's milk intact protein, soy protein isolates or protein hydrolysates are also safe and suitable for infants under the same conditions. The Panel concludes that the use of FOF with a protein content of at least 1.6 g/100 kcal from either intact cow's milk protein or intact goat's milk protein otherwise complying with the requirements of relevant EU legislation is safe and suitable for healthy infants living in Europe with an intake of complementary foods of a sufficient quality. This conclusion does not apply to infant formula (IF). The Panel also concludes that the safety and suitability of FOF with a protein content of at least 1.6 g/100 kcal manufactured from either protein hydrolysates or soy protein isolates cannot be established with the available data. The same conclusion applies to IF. The NDA Panel endorsed a draft of this scientific opinion on 14 December 2016 for public consultation. The draft document has been revised and updated according to the comments received, where appropriate. (C) 2017 European Food Safety Authority. EFSA Journal published by John Wiley and Sons Ltd on behalf of European Food Safety Authority

Scientific opinion on the tolerable upper intake level for preformed vitamin A and β-carotene

Following two requests from the European Commission, the EFSA Panel onNutrition, Novel Foods and Food Allergens (NDA) was asked to deliver a scientificopinion on the revision of the tolerable upper intake level (UL) for preformed vitamin A and β-carotene. Systematic reviews of the literature were conducted forpriority adverse health effects of excess vitamin A intake, namely teratogenicity,hepatotoxicity and endpoints related to bone health. Available data did not allowto address whether β-carotene could potentiate preformed vitamin A toxicity.Teratogenicity was selected as the critical effect on which to base the UL for preformed vitamin A. The Panel proposes to retain the UL for preformed vitamin A of 3000 μg RE/day for adults. This UL applies to men and women, including women of child-bearing age, pregnant and lactating women and post-menopausal women. This value was scaled down to other population groups using allometric scaling (body weight0.75), leading to ULs between 600 μg RE/day (infants 4–11 months) and 2600 μg RE/day (adolescents 15–17 years). Based on available intake data, European populations are unlikely to exceed the UL for preformed vitamin A if consumption of liver, offal and products thereof is limited to once per month or less. Women who are planning to become pregnant or who are pregnant are advised not to consume liver products. Lung cancer risk was selected as the critical effect of excess supplemental β-carotene. The available data were not sufficient and suitable to characterise a dose–response relationship and identify a reference point; therefore, no UL could be established. There is no indication that β-carotene intake from the background diet is associated with adverse health effects. Smokers should avoid consuming food supplements containing β-carotene. The use of supplemental β-carotene by the general population should be limited to the purpose of meeting vitamin A requirements

Tolerable upper intake level for dietary sugars

Following a request from five European Nordic countries, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was tasked to provide scientific advice on a tolerable upper intake level (UL) or a safe level of intake for dietary (total/added/free) sugars based on available data on chronic metabolic diseases, pregnancy‐related endpoints and dental caries. Specific sugar types (fructose) and sources of sugars were also addressed. The intake of dietary sugars is a well‐established hazard in relation to dental caries in humans. Based on a systematic review of the literature, prospective cohort studies do not support a positive relationship between the intake of dietary sugars, in isocaloric exchange with other macronutrients, and any of the chronic metabolic diseases or pregnancy‐related endpoints assessed. Based on randomised control trials on surrogate disease endpoints, there is evidence for a positive and causal relationship between the intake of added/free sugars and risk of some chronic metabolic diseases: The level of certainty is moderate for obesity and dyslipidaemia (> 50–75% probability), low for non‐alcoholic fatty liver disease and type 2 diabetes (> 15–50% probability) and very low for hypertension (0–15% probability). Health effects of added vs. free sugars could not be compared. A level of sugars intake at which the risk of dental caries/chronic metabolic diseases is not increased could not be identified over the range of observed intakes, and thus, a UL or a safe level of intake could not be set. Based on available data and related uncertainties, the intake of added and free sugars should be as low as possible in the context of a nutritionally adequate diet. Decreasing the intake of added and free sugars would decrease the intake of total sugars to a similar extent. This opinion can assist EU Member States in setting national goals/recommendations

Scientific Opinion on Flavouring Group Evaluation 49, Revision 1 (FGE.49Rev1): xanthine alkaloids from the priority list

Publisher PD

Experimentos sobre la evolución del lenguaje

Trabajo de clase de la asignatura Sistemas Informáticos (Facultad de Informática, Curso 2004-2005)En este proyecto implementamos modelos sencillos de evolución de la comunicación en una población para estudiar distintos aspectos relacionados con la evolución del lenguaje y su ventaja evolutiva. Consideramos algunos trabajos que han aparecido sobre el tema, implementando el modelo propuesto con un algoritmo evolutivo. A través de la simulación computacional tratamos de emular sistemas de conocimiento innato, sistemas de aprendizaje y sistemas de aprendizaje con selección natural para el estudio de la evolución real del lenguaje. [ABSTRACT] In this project we implements simple models of evolution of the communication in a population to study different aspects related to the evolution of the language and the evolutionary advantage. We consider some of the works that have been appeared related to the subject, implementing the proposed model by means of an evolutive algorithm. Through the computational simulation we try to emulate systems of innate knowledge, learning systems and learning systems with natural selection for the study of the real evolution of the language.Depto. de Sistemas Informáticos y ComputaciónFac. de InformáticaTRUEunpu