Memetic algorithms are a type of genetic algorithms very valuable in optimization problems. They are based on the concept of "meme", and use local search techniques, which allow them to avoid premature convergence to suboptimal solutions. Among these algorithms we can consider Lamarckian and Baldwinian models, depending on whether they modify (the former) or not (the latter) the agent's genotype. In this paper we analyze the application of memetic algorithms to the N-Person Iterated Prisoner's Dilemma (NIPD). NIPD is an interesting game that has proved to be very useful to explore the emergence of cooperation in multi-player scenarios. The main contributions of this paper are related to setting the ground to understand the implications of the memetic model and the related parameters. We investigate to which extent these decisions determine the level of cooperation obtained as well as the memory and the execution performance.

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<p>Carbonaceous species such as nitro-polycyclic aromatic hydrocarbons (NPAHs) are toxic ubiquitous pollutants contained in the organic fraction of airborne particles, since several of them have mutagenic and carcinogenic properties. Black carbon has been recognized as a short live climatic pollutant which must be controlled in order to mitigate climatic change. Morelos is a little state of Mexico located at the South of the Metropolitan Area of Mexico City which has grown in the last years, but only few studies related with atmospheric pollution have been performed, then, with the aim to have better information related with carbonaceous compounds contained in the PM<sub>2.5</sub> of the two main cities of Morelos, a monitoring campaign was carried out in Cuernavaca City, from 2016 to 2018, whereas in the Cuautla city the campaign was performed from 2017 to 2018. PM<sub>2.5</sub> were collected with HighVol Tish equipment every six days. Elemental and organic carbon were analyzed with a Sunset Lab and toxic NPAHs were extracted with dichloromethane and sonication and further analyzed by gas chromatography–mass spectrometry (GC-MS). Median annual PM<sub>2.5</sub> concentrations were 22.5 ± 7.2 mg m<sup>-3</sup> and 19.6 ± 6.1 mg m<sup>-3</sup>, for Cuautla and Cuernavaca, respectively. Black carbon concentrations were higher in Cuautla than in Cuernavaca with 1.9 ± 0.5 mg m<sup>-3</sup>, and 1.3 ± 0.4 mg m<sup>-3 </sup>respectively, since Cuautla is a rural zone with frequent biomass burning The highest NHAPs concentrations were found in Cuautla with medians of 280.74 pg m<sup>-3</sup>, 90.67 pg/m<sup>-3</sup> and 156.61 pg m<sup>-3</sup>, for the warm dry season (March-June), the rainy season (July-October) and the cold dry season (November-February) respectively. In Cuernavaca, the NHAPs presented lower concentrations in the three seasons with 116.41 pg m<sup>-3</sup>, 63.82 pg/m<sup>-3</sup> and 128.99 pg m<sup>-3</sup>, respectively. 1-nitronaphtalene, 2-nitrophenentrene and 2-nitroanthracene were the most abundant compounds in both sites. Although PM<sub>2.5</sub> Mexican Standard was not exceeded, the high concentrations of black carbon and NPAHs are of concern since black carbon is a climatic pollutant and some of the NHAPs compounds are carcinogenic.</p>

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