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In recent years, interaction designers have actively started addressing sustainability as a research topic. More specifically, persuasive applications, which aim at promoting pro-environmental behaviour, such as energy saving have been of growing interest in multiple research disciplines. Driven by the proliferation of smart meters and energy monitors as well as the rise of social media, researchers and designers of persuasive applications have developed a wide range of design solutions that address this issue. The majority of them, however, provide the same information to users irrespective of differences in their environmental concerns and different motivations to conserve energy. Our research addresses this gap. We design mock-up screens that provide feedback catering towards different pro-environmental values and concerns and ask users to evaluate them in a survey setting. The research aims at understanding what feedback different people find relevant and therefore attempts to bridge the gap between environmental psychology and HCI. At the same time it provides insights for the design of personalised eco-feedback related to energy consumption.

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The aim of the present study is to examine the motivation of students from Trakia University to participate actively in physical education classes and sports. A survey as an express method of assessing students' motivation for sports activities is conducted. Different aspects of their sports interests are studied. It is established that students have positive attitude towards physical education classes and sports. Insufficient awareness of students with regard to all the benefits of practicing physical exercises and sports is registered. Because of the high demand during the educational process, students do not have enough free time for additional sports activities. Based on the obtained results, the following recommendations are proposed: to create conditions for inclusion of all students in additional sports; students to obtain theoretical knowledge on the use, effects and benefits of practicing physical exercises and sports; students to acquire knowledge and skills for individual sports activities, and to improve and upgrade the facilities of the university.