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Climate change and global warming are amplified by pollution and deforestation. For this reason, governments around the world meet every year to find ways to reduce pollution and deforestation and ensure sustainable development. The use of clean energy, particularly ecological charcoal, appears to be an appropriate solution in developing countries. The main objective of this research is to assess the motivations for the consumption of ecological charcoal in Cameroon, using a quantitative approach based on Partial Least Squares Structural Equation Modeling (PLS-SEM). Data were collected from 525 households in the cities of Yaoundé and Douala, Cameroon. The results show that the desire to protect the environment (ecological sensibility), the desire to reduce the energy costs of cooking (economic sensibility), the need to improve health and security, and the desire to enhance the quality of meals and to preserve the cleanliness of pots are all determinants in the consumers’ choice to use ecological charcoal. These results are refreshing. In Cameroon, in addition to its economic value, the massive consumption of ecological charcoal will contribute to a reduction in household waste management problems in cities and municipalities, while preserving the environment.

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With the globalization of economies, we are witnessing a proliferation of products of different origins in the Cameroonian market. The objective of this Article is to assess the effect of perceived skills of the country of origin on the perceived quality of the products in some Cameroonian urban environment. As the methodological level, a field investigation has been carried out in order to collect the data from a sample of 784 consumers surveyed via the Internet (online form filling) and supplemented by a classical questionnaire (paper pencil) in the cities of Douala and Yaoundé. This article uses the model of structural equations to latent variables. Thus, the main results show a positive effect of the perceived competence of the country on the product's perceived quality by the common Cameroonian consumer living in urban area. The effect of the country of manufacture is more significant than that of the country of design. We also notice an increase of the country of design's effect on the perceived quality of products when the technological complexity of the products increases. Conversely, a reduction of the country of manufacture's effect on the perceived quality of the products is recorded when the technological complexity of the products increases. In this way, the moderating effect of the technological complexity of a product is thereby proven.Keywords: Perceived competence, country of origin, the country of manufacture, countries of design, perceived quality.European Scientific Journal January 2017 edition Vol.13, No.1 ISSN: 1857 -7881 (Print) e -ISSN 1857-7431 320 RésuméAvec la globalisation des économies, on assiste à une multiplication des produits d'origines diverses sur le marché camerounais. L'objectif de cet article est d'évaluer l'effet des compétences perçues du pays d'origine sur la qualité perçue des produits en milieu urbain camerounais. Sur le plan méthodologique, une enquête de terrain a été effectuée. Les données ont été collectées auprès d'un échantillon de 784 consommateurs interrogés via Internet et complétées par un questionnaire «papier crayon» dans les villes de Douala et Yaoundé. Cet article a recours au modèle d'équations structurelles à variables latentes. Les principaux résultats révèlent un effet positif de la compétence perçue du pays sur la qualité perçue des produits par le consommateur camerounais en milieu urbain. L'effet du pays de fabrication est plus significatif que celui du pays de conception. On note également un accroissement de l'effet du pays de conception sur la qualité perçue des produits lorsque la complexité technologique des produits augmente. A contrario, une diminution de l'effet du pays de fabrication sur la qualité perçue des produits est enregistrée lorsque la complexité technologique des produits augmente. L'effet modérateur de la complexité technologique des produits est de ce fait avéré.