In this study, based on a sociogenetic approach involving 7 teachers and 182 fourth-year scientific students from 21 schools offering the scientific section in Inkisi and Kimpese, two cities in the Kongo Central province of the Democratic Republic of Congo, the central question focused on identifying the main initial representational obstacles in kinematics among these students and their origins. As a result, it was noted that most teachers were unaware of these initial representations. In addition, the students had primitive, negative and collective conceptions, stemming from educational and cultural contexts, relating to the basic notions of kinematics such as motion (moving), time (duration), trajectory (distance), speed (rapidity), rectilinear motion (movement on a flat surface), uniform motion (fixed), varied motion (accelerated) and free fall (falling suddenly and involuntarily). There is thus a persistent and evolving contradiction between these initial representations-obstacles and the new knowledges that teachers have to transmit.
Energy is the essential and fundamental input for the development of all productive activities and for satisfying the basic needs of the population. The aim of this article is to develop an appropriate electrical energy planning system to promote what is profoundly transforming the sector: the rational exploitation of energy resources and the efficient use of energy in all links of the energy chain, by making the investments that will enable Maniema province and precisely the city of Kindu to be assured of a reliable, inexpensive and ecologically sustainable supply. This study is an important step in the implementation of a comprehensive energy planning system in the city of Kindu. It represents a useful tool for all players in the energy sector and in other areas of society and the economy. However, there is no doubt that the process of transforming the sector will only succeed with the active participation of producers, consumers and the state in the analysis and study.
This article highlights the contribution of a teaching material aimed at the understanding of physical laws for students following the scientific humanities. These laws include Ohm’s law and Pouillet’s law. The research shows that the use of didactic material in a physics lesson increases the satisfaction of the students with an increased success rate of 13, 24 % compared to a lesson without didactic material. Therefore, it is essential for a teacher who wants to improve the understanding of these laws to use appropriate and adequate teaching materials. We propose MAT MAF, which has shown satisfactory results.
To publicize the results of research carried out in the fields of engineering and applied sciences, and in any other specialty, it is necessary to write a scientific article. This has a specific format called IMRAD method, which includes introduction, methods, results and discussion. In it, graphs, tables, figures and own designs of the methods used in the study can be included. A set of tools and general recommendations are offered to students and researchers in engineering and applied sciences in order to improve their preparation for the challenge of communicating science to their peers, the general public and decision makers. Suggestions for the typical preparation of a manuscript, recommendations for good practice in writing scientific articles and links to resources available on the web are included in the article.
In this article the analysis of implementation of the technique of genetic algorithms for the adjustment of the optimum of the quadrics is carried out. A set of sample points of the quadric, which may possibly contain noise and therefore may represent in the fitting, a different geometric figure from the one from which they come, are defined and will be used to fit the quadric which best represents these points. The purpose of this work is the application of GA (Genetic Algorithms) for an optimization problem, in which this technique has been very appropriate in solving the different problems. We seek to obtain a greater knowledge of GA, as well as a better understanding of what an implementation of this technique entails in any problem.
Few mathematics and physics sixth form pupils succeed in Physics, such is the case, for example, in the 2017 exam, in Democratic Republic of the Congo/Kinshasa on the notion of moment of force in physics to which only 17,35% have succeeded. Teachers of physics and researchers should think more about the conception and the finding out of mechanisms, implements and strategies in the teaching-learning process for the remediation of the situation.
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