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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
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European Scientific Journal
Number of Followers: 3  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1857-7881 - ISSN (Online) 1857-7431
Published by Universidade dos Açores Homepage  [1 journal]
  • Propuesta Didáctica para Impartir Música en Secundaria:
           Interdisciplinariedad, Inteligencia Emocional y Parámetros Musicales a
           Través de la Suite Op. 46 nº 1 Peer Gynt de Edvard Grieg

    • Authors: Delia María García Berraquero, Amaya Epelde Larrañaga
      Pages: 628 - 628
      Abstract: Esta propuesta didáctica está dirigida a los profesores y alumnos de Enseñanza Secundaria. Plantea una posibilidad metodológica interesante basada en el estudio de la Suite Peer Gynt,  que  pretende, direccionando el desarrollo de los contenidos musicales relacionados con dicha Suite a la realización de actividades lúdicas y creativas y a la realización de un proyecto final interdisciplinar: el desarrollo, por parte de los alumnos, de una motivación intrínseca hacia las materias y los conocimientos musicales, la adquisición de conocimientos significativos, la vivencia musical activa, el trabajo cooperativo, el entendimiento de las diferentes disciplinas artísticas como un todo con un sentido común, la creación hipotextual o interdisciplinar. Así mismo, realizamos una pequeña revisión bibliográfica, presentamos la propuesta didáctica y terminamos el manuscrito hablando de los diferentes tipos de evaluación que se pueden realizar con esta propuesta.               This didactical proposal is directed at teachers and students of the Mandatory Secondary Education. It propose an interesting methodological possibility based in the study of the Peer Gynt Suite that aims, directing the development of the musical subject related to this Suite to the performance of playful and creative activities and to the execution of an interdiscilinary final Project: the development, by the students, of an intrinsic motivation towards the subjects and musical knowledge; the acquirement of significant learnings; the active musical experience, cooperative work; the understanding or the different artistic disciplines as a whole with a common sense, the hypo textual or interdisciplinary creation. We carry out a small bibliographical revision, we present the didactic proposal and we finish the manuscript talking about the different types of evaluation that can be carried out in this didactic proposal.
      PubDate: 2022-11-27
      Issue No: Vol. 11 (2022)
       
  • Estimation de la Biomasse des Arbres et Incertitudes Associées (Revue
           Bibliographique)

    • Authors: Moundounga Mavouroulou Quentin, Ngomanda Alfred, Lepengue Nicaise Alexis
      Pages: 656 - 656
      Abstract: La mesure des stocks et flux de carbone forestier est absolument essentielle pour comprendre le rôle que jouent les forêts dans le cycle global du carbone et pour mettre en place des politiques efficaces d’atténuation du réchauffement climatique mondial induit par l’augmentation des gaz à effet de serre d’origine anthropique. Cette revue bibliographique vise à présenter l’état actuel des connaissances sur les incertitudes associées à la quantification du carbone forestier, en particulier dans les forêts tropicales. Plusieurs études montrent que les incertitudes sur les stocks et flux de carbone séquestrés dans les forêts tropicales sont extrêmement larges, estimés respectivement 188 et 272 milliards de tonnes de carbone et entre 0.17 et 1.16 milliards de tonnes de gaz carbonique. Ces énormes incertitudes sont sans doute liées aux méthodes utilisées pour quantifier la biomasse des arbres vivants. La revue bibliographique montre en effet que dans la quasi-totalité des études sur le carbone forestier, la biomasse des arbres n’est réellement jamais mesurée sur le terrain, mais plutôt estimés à l’aide des modèles mathématiques ou équations allométriques qui transforment les données d’inventaire forestier en stocks et flux de carbone. L’estimation de carbone comporte en conséquence une incertitude dont l’amplitude pourrait dépendre de : (i) la méthode de collecte des données la biomasse aérienne (ii) la mesure des attributs de taille (diamètre et hauteur) des arbres et traits d’espèces (densité du spécifique du bois, taille de la canopée) lors des inventaires forestiers, (iii) la forme mathématique et qualité d’ajustement des modèles allométriques (erreur propre du modèle) employés, et (iv) possiblement d’une inadéquation entre structure diamétrique des arbres dans les données de calibration des modèles et dans les inventaires forestiers. Toutefois, l’absence d’études ayant mesuré la biomasse totale d’une forêt à une échelle spatiale fixée (exemple 1 ha) ne permet pas actuellement d’évaluer la contribution de chaque source d’erreurs sur l’incertitude totale de l’estimation finale de carbone.    Measuring forest carbon stocks and fluxes is absolutely essential for understanding the role that forests play in the global carbon cycle and for developing effective policies to mitigate global warming induced by increasing greenhouse gases of anthropogenic origin. This bibliographic review aims to present the current state of knowledge on the uncertainties associated with the quantification of forest carbon, particularly in tropical forests. Several studies show that the uncertainties on the carbon stocks and fluxes sequestered in tropical forests are extremely large, estimated respectively at 188 and 272 billion tonnes of CO2and between 0.17 and 1.16 billion tonnes of CO2. These huge uncertainties are probably related to the methods used to quantify the biomass of living trees. The bibliographical review indeed shows that in almost all studies on forest carbon, the biomass of trees is never really measured in the field, but rather estimated using mathematical models or allometric equations which transform the data inventory of carbon stocks and fluxes. The carbon estimate therefore includes an uncertainty, the magnitude of which could depend on: (i) the above-ground biomass data collection method (ii) the measurement of tree size attributes (diameter and height) and tree traits species (specific density of the wood, size of the canopy) during forest inventories, (iii) the mathematical form and quality of adjustment of the allometric models (specific error of the model) used, and (iv) possibly a mismatch between diameter structure of trees in model calibration data and in forest inventories. However, the absence of studies having measured the total biomass of a forest at a fixed spatial scale (example 1 ha) does not currently allow an assessment of the contribution of each source of error to the total uncertainty of the final carbon estimate.
      PubDate: 2022-11-27
      Issue No: Vol. 11 (2022)
       
  • Family Farming Systems in Northern Central Cameroon: Challenges and
           Prospects for Food Security

    • Authors: Pierre Marie Chimi, William Armand Mala, François Manga Essouma, Abdel Karimou Ngamsou, John Hermann Matick, Jean Louis Fobane, Forbi Preasious Funwi, Michele Elodie Kouoguem Kamdem, Lethicia Flavine Feunang Nganmegni, Joseph Martin Bell
      Pages: 678 - 678
      Abstract: If family farming is supported, it can serve as a foundation for growth and food security. One of Cameroon's biggest development challenges is still food insecurity. Therefore, the purpose of this study was to investigate the situation and key determinants of food security in the northern forest-savanna transition zone of the Central Cameroon Region. To do this, 180 family farmers from Mbangassina, Ntui, Batchenga, and Obala participated in a survey and field observations (January-March 2020; March-May 2021, and July-September 2021). According to this survey and these findings, the useful agricultural area is 4.55 ± 0.21 hectares. Cocoa, yam, cassava, maize, plantain, sweet potato, and peanut are the principal crops mentioned. With a mixed workforce, the vast majority of agricultural work is performed manually (machetes, daba, etc). (Family and external). Seven significant challenges face family farming in these areas: poor market organization, bad road/track conditions, a lack of inputs, seasonal uncertainties/rainfall deficits, challenging access to irrigation, unstable land tenure, challenging access to credit, and challenging access to agricultural equipment. Each community faces unique challenges. The family agricultural industry, which these people rely on for their food security, needs to be saved to overcome these obstacles. According to the findings, expanding access to financial and commercial services will help agricultural operations in the study area increase food security. This will be in line with initiatives made by both governmental and non-governmental organizations to advance agricultural technologies as a way to address the issue of food insecurity.
      PubDate: 2022-11-27
      Issue No: Vol. 11 (2022)
       
 
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