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Abstract-We are currently witnessing the launch and development of a large number of distance training devices in Moroccan universities, whose main objective is to meet society's requirements and the knowledge economy, which is fully emerging. All of the devices are based on the use of elearning platforms, which can be problematic for designers for different reasons (costs, utility, usability, etc.). Being conscious of the impact of these technological tools on learning, we propose a methodical approach that identifies the essential criteria for evaluation of e-learning platforms to fit the needs of teachers and learners from analysis of the evaluation dimensions in multimedia documents, particularly through the dimensions of utility and usability.

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Water is a major preoccupation for our generation since it is crucial in keeping a healthy ecosystem and supporting biodiversity. The state of aquatic systems and water bodies needs to be continiously monitored to make informed decisions and trigger sanitation when necessary. However, observing and tracking the evolution of many water bodies without disturbing and polluting the biotopes is expensive, not scalable, and thus infeasible. This paper presents a way to make sustainable measurements using a new low-cost, open-source, and autonomous monitoring system deployable in a broad network. The smart buoy is deployed and controlled by a central unit that uses lab-graded sensors to measure ambient factors. The custom electronic board offers sustainable electronics integration emphasizing power path and network connectivity. The smart buoy showed an average power consumption of 1.8mA and a cost of 932 euros per device. Currently, five spots have been monitored, which allowed the understanding of why biological events, such as a massive fish dead, occurred. The system is easily expandable and can be used in various applications to increase the knowledge of the underwater ecosystem.