Loads Control Aerodynamic in Offshore Wind Turbines

Due to the increase of rotor size in horizontal axis wind turbine (HAWT) during the past 25 years in order to achieve higher power output, all wind turbine components and blades in particular, have to withstand higher structural loads. This upscaling problem could be solved by applying technologies capable of reducing aerodynamic loads the rotor has to withstand, either with passive or active control solutions. These control devices and techniques can reduce the fatigue load upon the blades up to 40% and therefore less maintenance is needed, resulting in an important money savings for the wind farm manager. This project consists in a study of load control techniques for offshore wind turbines from an aerodynamic and aeroelastic point of view, with the aim to assess a cost effective, robust and reliable solution which could operate maintenance free in quite hostile environments. The first part of this study involves 2D and 3D aerodynamic and aeroelastic simulations to validate the computational model with experimental data and to analyze the interaction between the fluid and the structure. The second part of this study is an assessment of the unsteady aerodynamic loads produced by a wind gust over the blades and to verify how a trailing edge flap would influence the aerodynamic control parameters for the selected wind turbine blade

Exploring and experimenting cooperative design

This paper describes a community co-design approach performed in rural Mozambique. It discusses the experiences and experiments performed in a community multimedia center towards creating services with inherent values for daily community activities. The design approach pursues a holistic interpretation of community needs, and discusses emerging, new and creative applications for future community binding

La “seconda vita” digitale delle riviste di turismo

Al centro di questa ricerca c’è il problema dell’ibridazione digitale delle riviste di turismo: in particolare, si intende capire in che modo queste mettono a frutto la loro presenza online al fine di ampliare il loro pubblico e il loro business. Grazie a una griglia, disegnata con lo scopo di mappare tutti i tipi di contenuti e funzionalità offerti da un campione di 120 riviste online di turismo, derivate da preesistenti edizioni cartacee, è stata tracciata una mappa del loro attuale uso di internet. Al loro ingresso nel mondo digitale, le riviste di viaggi acquistano elementi che non era possibile ottenere dalla carta stampata, ma allo stesso tempo perdono altri elementi. Ma questo processo non può ridursi a una mera questione di aggiunta e sottrazione di caratteristiche: si richiede piuttosto un profondo ripensamento della comunicazione turistica online, un ripensamento che apre spazi per nuovi modelli di business e per una nuova “alleanza etica” tra le stesse riviste e i loro lettori

Exploring the experiences of instructors teaching massive open online courses in tourism and hospitality: a mixed methods approach

Massive Open Online Courses (MOOCs) have existed as a disruptive educational phenomenon for nine years. Grounded in the roots of distance education, open education, Open Educational Resources, and OpenCourseWare, MOOCs have now survived various critics and have continued growing globally. Reports about MOOCs in both the press and scholarly publications began to grow significantly in 2013 (Sánchez-Vera, Leon Urrutia, & Davis, 2015; Zancanaro & Domingues, 2017) and, since then, more and more researchers have joined the discussions, developing them to explore various new topics. To contribute to the literature of MOOC studies, this doctoral thesis begins with an in-depth analysis of the background, history, growth, and vision, and proposes a tentative definition of MOOCs. Meanwhile, by conducting bibliometric research to review MOOC studies conducted between 2015 and 2017, this thesis fills in the gap that has existed due to a lack of systematic reviews of MOOC literature since 2015. The results of the bibliometric research summarised the relevant MOOC research into nine categories, including learner focused, commentary and concepts, case reports or evaluations, pedagogy, curriculum and design, course object focused, provider focused, technology, systematic review of literature, and learning analytics and big data. They also suggested a limited amount of provider focused research, which became the research interest and focus of this thesis. In the centre of the Europe, Swiss universities have marched forward in the MOOC movement, together with other over 550 universities (Shah, 2016) around the world. Università della Svizzera italiana (USI; Lugano, Switzerland), a Swiss public university, became a MOOC provider in 2015 and offered the first MOOC in the topic of eTourism: eTourism: Communication Perspectives. This doctoral thesis is closely related to this university-level initiative, which was dedicated to producing the first pilot MOOC at USI. Therefore, the cases chosen by this thesis are positioned in the discipline of tourism and hospitality. The first MOOC with a large audience taught artificial intelligence in 2011 (Zancanaro & Domingues, 2017). Nowadays, MOOCs have broken the barrier of space and time to educate the masses in a wide range of subjects. However, the provision of MOOCs in the subject of tourism and hospitality did not appear until 2013, when two MOOCs from two American universities became available. In the past four years since these MOOCs were launched, the number of tourism and hospitality MOOCs available in the market has remained limited (Tracey, Murphy, & Horton-Tognazzini, 2016). This scarcity contradicts the fact that tourism and hospitality is the field that contributes the most to the employment of the global workforce. Pressing problems, such as high turnover, seasonality, and new global challenges have urged for solutions to quickly training people working in this area to become available (Cantoni, Kalbaska, & Inversini, 2009). A call for more studies about tourism and hospitality MOOCs has emerged. The combined reality of the lack of studies regarding MOOC providers, opportunities for first-hand experience of producing a tourism MOOC in a university, and the deficiency in both the research and practises of tourism and hospitality MOOCs has inspired the direction of this thesis in regard to exploring MOOC instructors’ experiences, using cases in the field of tourism and hospitality. It cumulates six studies, using a mixed methods approach, to tackle the two main research objectives: to investigate at large the tourism and hospitality MOOC provisions between 2008 and 2015 and to report the experiences of Università della Svizzera italiana (USI) when producing the eTourism MOOC. In order, the first two studies in Chapter 3 of this thesis focus on tourism and hospitality MOOCs in general and produce a big picture context for the other four studies in Chapter 4. The first study proposes a conceptual framework through which to describe and analyse the course design of a MOOC and applies it to 18 tourism and hospitality MOOCs produced between 2008 and 2015. The second study then continues to interview six tourism and hospitality MOOC instructors, to describe their experiences and perspectives of teaching MOOCs. After exploring a holistic view of the overall development of MOOCs in tourism and hospitality and gaining a deep understanding of the instructors behind these offerings, this thesis introduces the experiences of one single MOOC provider: Università della Svizzera italiana (USI) in Chapter 4. It first introduces its overall implementation process (Study 3), and further elaborates three phases of this process: how it selected a suitable MOOC platform at the beginning (Study 4); how it assessed learner engagement in the MOOC (Study 5); and, eventually, how it evaluated the performance of the MOOC (Study 6). This thesis was written mainly from the perspective of eLearning, with the intention of benefiting its community of scholars and practitioners. It has contributed to the literature by developing a framework with which to review MOOCs (in Study 1), the implementation process of producing MOOCs (in Study 2), practical review schema of MOOC platforms (in Study 4), the MOOC Learner Engagement Online Survey (in Study 5), and how to use the Kirkpatrick model to evaluate MOOCs (in Study 6). These conceptual frameworks and experiential tools can benefit future researchers and practitioners. Meanwhile, due to its intimate connection with the field of tourism and hospitality, by directly using its cases, the research outputs of the six studies can also benefit the tourism and hospitality education and training sector as a reference for further action

ICT and gamified learning in tourism education: a case of South African secondary schools

Tourism is often introduced as a subject in formal education curricula because of the increasing and significant economic contribution of the tourism industry to the private and public sector. This is especially the case in emerging economies in Asia and Africa (Hsu, 2015; Mayaka & Akama, 2015; Cuffy et al., 2012). Tourism in South Africa – which is the geographical setting of this research – is recognised as a key economic sector. At secondary level, tourism has been widely introduced at schools throughout South Africa since 2000 and has experienced significant growth (Umalusi, 2014). Furthermore, information and communication technology (ICT) has rapidly penetrated public and private sectors of the country. ICT affords novel opportunities for social and economic development, and this has especially been observed in the fields of both tourism and education (Anwar et al., 2014; Vandeyar, 2015). Yet, the many uses and implications of ICT for tourism education in South Africa are unclear and under-theorised as a research area (Adukaite, Van Zyl, & Cantoni, 2016). Moreover, engagement has been identified as a significant indicator of student success in South Africa (Council for Higher Education, 2010). Lack of engagement contributes to poor graduation rates at secondary and tertiary institutions in South Africa (Strydom et al., 2010; Titus & Ng’ambi, 2014). A common strategy to address lack of student engagement is introducing game elements into the learning process: the so-called gamification of learning (Kapp, 2012). The majority of research in this field has been conducted in more economically advanced and developed regions, and there is a paucity of research in emerging country contexts. It is argued that gamification can be effectively utilised also in these contexts to address learner engagement and motivation. This study aims to contribute in this respect: firstly, by investigating the extent to which ICT supports tourism education in South African high schools through the lenses of Technology Domestication Theory (Habib, 2005; Haddon, 2006) and Social Cognitive Theory (Bandura, 1977). Secondly, the study aims to examine gamified learning acceptance within tourism education in a developing country context. The research assimilates three separate studies. Study 1. The Role of Digital Technology in Tourism Education: A Case Study of South African Secondary Schools The study was designed as an exploratory analysis, based on 24 in-depth interviews (n=24) with high school tourism teachers and government officials. An analysis reveals that teachers recognize ICT as essential in exposing students to the tourism industry. This is especially the case in under-resourced schools, where learners do not have the financial means to participate in tourism activities. However, ICT is still limited in its integration as a pedagogical support tool. The major obstacles toward integration include: technology anxiety, lack of training, availability of resources, and learner resistance to use their personal mobile devices. Study 2. Raising Awareness and Promoting Informal Learning on World Heritage in Southern Africa. The Case of WHACY, a Gamified ICT-enhanced Tool The goal of the study was to present the World Heritage Awareness Campaign for Youth (WHACY) in Southern Africa. A campaign was dedicated to raise awareness and foster informal learning among Southern African youth about the heritage and sustainable tourism. The campaign employed an online and offline gamified learning platform, which was supported by a dedicated website, Facebook page, wiki and offline materials. In one year of operation the campaign reached more than 100K audience. For the evaluation of the campaign, a mixed methods approach was used: focus groups with students (n=9), interviews (n=19) and a survey with teachers (n=209). The study attempted to assess user experience in terms of engagement and conduciveness to learning and explored the possibility of a gamified application to be integrated into the existing high school tourism curriculum. The perspectives of South African tourism students and teachers were here considered. Study 3. Teacher perceptions on the use of digital gamified learning in tourism education: The case of South African secondary schools. The study is quantitative in nature and investigated the behavioural intention of South African tourism teachers to integrate a gamified application within secondary tourism education. Data collected from 209 teachers were tested against the research model using a structural equation modelling approach. The study investigated the extent to which six determined predictors (perceptions about playfulness, curriculum relatedness, learning opportunities, challenge, self-efficacy and computer anxiety) influence the acceptance of a gamified application by South African tourism teachers. The study may prove useful to educators and practitioners in understanding which determinants may influence gamification introduction into formal secondary education

Understanding Online Reputation Of Mediterranean Destinations

Destination managers are investing considerable efforts (i.e. time, resources and money) to market their destinations on the internet, often not considering the fact that unofficial information sources are gaining more and more popularity among internet users. Long tail players (such as blogs, wikis, reviews, etc.) are actually appearing in the ranking of search engines, spreading almost the same contents as the official sources, but with very different strategies, goals and styles. Starting from a log files analysis of a given Mediterranean destination, nine keywords have been used to perform search activities on two major search engines (Google and Yahoo!). A content analysis study has been performed on search results in order to examine topics and arguments of the retrieved results, which are shaping the web reputation of the destination. The paper shows that destinations need to manage their brand and online reputation holistically, by listening all players providing information about them, and trying to leverage on their contributions

Conditioned Invariance and Unknown-Input Observation for Two-Dimensional Fornasini-Marchesini Models

The concept of conditioned invariance is extended for the class of 2-D systems described by Fornasini-Marchesini models in the most general form proposed by Kurek. Then, the use of this concept is investigated within the context of estimation in the presence of unknown inputs