scholarly journals E-LEARNING MATERIALS FOR SOCIAL SCIENCE STUDENTS

2014 ◽  
Vol 61 (1) ◽  
pp. 77-87
Author(s):  
Marjan Krašna ◽  
Tomaž Bratina

Today's student population is rightfully categorized as digital natives. From the beginning of their education, they used ICT. The technological gadgets, internet, and social networks are like a glove to them. Such generation of students require more than just textbooks. In the 2013 University of Maribor establish a task force for e-learning materials development. The goal was to identify the optimal technological, didactical and financial approach to the long process of e-learning materials development. Members of the task force have many workshops presenting different views, acquired experiences from their previous projects, technological constraints, prediction, etc. During these workshops it was decided it would be the best to prepare different types of e-learning materials and test them by the students. From their feedbacks we could set the guidelines for large scale production. At the Faculty of Arts, Faculty of Natural Sciences and Mathematics and Faculty of Education students needs to acquire also the digital competences to become successful teachers. For special didactics study programs different types of e-learning materials were produced with different technological approach. The concept was to upgrade the previous deliverables (PowerPoint slides) and narrate them. Narrated slides would enable students to refresh their lectures and should be used as blended e-learning materials. Narrations were prepared in different format: textual narration, voice narration and video narration. But later it was decided that these types are not enough and a mix of narratives (integrated multimedia learning materials) could be used on individual slides depending on the content of the slide. Students first receive the lecture in the classroom and in the same week they need to study associated e-learning materials and write their review of corresponding e-learning materials. In their review students were required to log the required time for studying the e-learning materials; benefits and drawbacks; potential improvement of e-learning materials; and open text of impression of using e-learning materials. Effectiveness and outcomes were tested with the electronic quizzes. Students were highly motivated with these new types of learning materials and provide us valuable feedback. Most efficient were text narrated learning materials, but the favourite was integrated multimedia learning materials. Video and audio narrations take them more time to study since they were constrained with the speed of speech of the recorded lecturer. Key words: design, distance education, e-learning, learning materials, verification and validation.

2019 ◽  
Vol 21 (1) ◽  
pp. 113-127 ◽  
Author(s):  
Juliana Romo-Buchelly ◽  
María Rodríguez-Torres ◽  
Fernando Orozco-Sánchez

Lactic acid (LA) is an organic compound used in several industries, such as food, textile, chemical, and pharmaceutical. The global interest  in  this  product  is  due  to  its  use  for  the  synthesis  of  numerous  chemical  compounds,  including  polylactic  acid,  a  biode-gradable thermoplastic and substitute for petroleum-derived plastics. An in-depth overview of the use of industrial and household wastes as inexpensive substrates in order to reduce the cost of LA production is presented. A review is carried out of the biotech-nological aspects that must be taken into account when using some wastes with high transformation potential to produce LA in a submerged  culture,  as  well  recommendations  for  their  use.  The  advantages  and  disadvantages  of  different  types  of  treatments used for the transformation of waste into suitable substrates are considered. Several methods of fermentation, as well as genetic strategies for increasing the production, are summarized and compared. It is expected that in a few years there will be many ad-vances in these areas that will allow greater large-scale production of LA using agroindustrial or household wastes, with potential positive economic and environmental impact in some regions of the planet.


Author(s):  
Adem Özgür ◽  
Arif Altun

Multimedia learning materials (MLM) play an important role in learning. Engagement is a state that contributes to care of and positive approach to MLM, to pay attention to and deep processing of it, to do activities in it while preventing learners from quitting MLM. The quality of MLMs and students' characteristics are important in the engagement process. Cognitive theories provide valuable principles when designing MLMs, whereas the emotional design of the MLMs and the affective responses they evoke in students remain in the background. The emotional design ensures students' engagement with MLMs, and their interpretation of the knowledge and their learning can be manipulated. In this chapter, student engagement has been elaborated within scope of MLMs. Secondly, the relationship between emotional processes and engagement was examined. It was focused on organizing students' emotional process using emotional design elements and their effects on learning outcomes. Finally, suggestions were made for maintaining interaction with MLM and engagement for learning.


Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1007
Author(s):  
Anna Nastruzzi ◽  
Gabriele Pitingolo ◽  
Giovanni Luca ◽  
Claudio Nastruzzi

Hydrogel microbeads hold great promise for immune-protective cell transplants and in vitro studies. Millifluidic generation of hydrogel microbeads is a highly efficient and reproducible approach enabling a mass production. This paper illustrates the preparation and characterization of highly controlled and reproducible microbeads made by different types of hydrogel using millifluidic approaches. The optimization of the process was made by a design of experiments (DoE) approach. The microbeads’ large-scale production can be potentially used for single cells or clusters encapsulation.


Author(s):  
Roland Brünken ◽  
Susan Steinbacher ◽  
Jan L. Plass ◽  
Detlev Leutner

Abstract. In two pilot experiments, a new approach for the direct assessment of cognitive load during multimedia learning was tested that uses dual-task methodology. Using this approach, we obtained the same pattern of cognitive load as predicted by cognitive load theory when applied to multimedia learning: The audiovisual presentation of text-based and picture-based learning materials induced less cognitive load than the visual-only presentation of the same material. The findings confirm the utility of dual-task methodology as a promising approach for the assessment of cognitive load induced by complex multimedia learning systems.


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