diffMOOC: Differentiated Learning Paths Through the Use of Differentiated Instruction within MOOC

Diversifying learning practices and situations helps learners to better regulate their learning with deep understanding, which improves learning outcomes. Accordingly, this paper presents our vision of a differentiation system of learning paths within MOOC. Promising beginning point for this vision would be to determine new factors that directly affect the success rate. Then, we introduce the theoretical framework of differentiated instruction, which represents the key component of the proposed system. Finally, we implement some key concepts in differentiation and some techniques for assigning learners into groups in order to differentiate learning paths. The main purpose of the proposed contribution is to optimize learning situations of each learner according to his needs. As a result reducing the proportion of learners in a situation of failure and thereby improving the success rate

Mobile Serious Game Design using User Experience: Modeling of Software Product Line Variability

In recent years, gamification has emerged as a new approach to increasing learner engagement. It covers a very wide range of games with very different purposes and with many fields of application. However, most of the gamification solutions proposed do not adopt the same modeling approach and little attention has been paid to mobile serious games (MSG) belonging to different pedagogical contexts. In order to overcome these difficulties, we have developed in this paper a generic model based on the Software Product Line (SPL) approach to manage the common and variable points of the MSG product set. We have also focused on the User eXperience (UX) concept to study the aspects that most affect the player’s experience in the context of MSGs. These aspects have been modeled in the form of features in the SPL Feature Model. MSG designers can use the model proposed during the development process, both to manage variability and to create an effective and fun learning environment

The study on the use of a biocatalyst based on Calcined Cow Teeth-TiO2 composite in degrading the methylene blue dye

Cow teeth are a type of natural biomaterial exhibiting a unique hierarchical porous structure that has not been widely studied in catalysis. In this work, from a simple deposition and calcination process, a Cow Teeth composite CCT-TiO2 was fabricated using Calcined Cow Teeth as a template and employed as a biocatalyst to remove a specific target dye from an aqueous solution under UV irradiation.The composite, CCT-TiO2, with a dosage of (0.2 g/L), at room temperature and a 3 h treatment time under UV light, showed a positive behavior towards the photochemical degradation of Methylene Blue (C = 0.01 g/L) mainly in a basic medium pH = 8 giving a catalytic efficiency rate up to 98%.The main parameters affecting the efficiency of the photocatalytic treatment, such as pH, the mass of catalyst added to the solution, the percentage of TiO2 in the composite, the concentration of MB at the beginning, the presence of ethanol, the addition of hydrogen peroxide and the temperature were studied to evaluate their influence on the degradation of methylene blue.The photodegradation performance is inversely proportional to the initial dye concentration. Similarly, for the temperature, the higher the temperature, the higher the photodegradation performance (removal rate 57% for a temperature of 55 °C). However, the presence of ethanol in the solution has a negative impact on the oxidation process, with a yield of 56% after 4 h30 min of treatment under UV irradiation. On the other side, the addition of oxygenated water considerably improves the photodegradation performances of methylene blue, with an efficiency of dye removal going up to 87% after 1 h of treatment.The excellent catalytic degradation performance and low cost suggest that this process has significant potential for effectively treating industrial wastewater loaded with cationic dye

Recent advances in the treatment of wastewater contaminated with pharmaceutical pollutants: a critical review

Over the last decade, the pharmaceutical industry has driven considerable development, raising the standard of living and health care in Morocco and the world. However, humanity has seen an explosion of industrialization throughout the health sector as the population has grown. This growth leads to the generation of substantial waste, such as pharmaceuticals and personal care products. These discharges pose severe problems for the environment. This situation requires efforts to treat this waste. Extensive research has resulted in the development of various methods to minimize or completely detoxify the debris, including physical and chemical methods. Wastewater treatment plants can use physical and chemical processes alone or in combination. Since both types of technologies have inflated costs and require enormous amounts of energy, chemicals, and the disposal of the sludge produced by the processes, interest has turned to combined technologies because they are less expensive and the resulting end products are less toxic. Therefore, in the above context, this review discusses various treatment strategies that have been developed to achieve the goals of a clean environment. The work analyzes the different physicochemical treatment techniques for pharmaceutical wastewater to find the least expensive and most effective techniques for eliminating emerging contaminants. This study examines the different techniques for treating pollutant-laden discharges, such as coagulation–flocculation, membrane filtration, advanced oxidation, adsorption, flotation, and hybrid treatments combining physicochemical and biological processes