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21.
Luca Botturi 《Educational technology research and development : ETR & D》2006,54(3):265-293
The last decade has brought about a major change in higher education. Course design has developed from a craftsmanship-like
process to a structured production, which involves interdisciplinary teams and requires more complex communication skills.
This conceptual article introduces E2ML–Educational Environment Modeling Language–a visual language for supporting complex instructional design processes. E2ML can be used for visualizing the intermediate and final results of design, thus providing documentation in a shared language
that can enhance team communication, improve design, and contribute to the development of high-quality instruction. The language
and its formal features are presented from a conceptual point of view and illustrated by examples. The main results of a first
evaluation study are reported, and the exploitation of E2ML in practice as well as its costs and benefits are critically discussed. 相似文献
22.
In this article we introduce a novel search paradigm for microblogging sites resulting from the intersection of Information Retrieval and Social Network Analysis (SNA). This approach is based on a formal model of on-line conversations and a set of ranking measures including SNA centrality metrics, time-related conversational metrics and other specific features of current microblogging sites. The ranking approach has been compared to other methods and tested on two well known social network sites (Twitter and Friendfeed) showing that the inclusion of SNA metrics in the ranking function and the usage of a model of conversation can improve the results of search tasks. 相似文献
23.
The adoption of e-Customs platforms to simultaneously ensure regulatory compliance and to facilitate trade is a major strategic issue for governments and customs administrations worldwide. It ensures a more cost-efficient usage of resources while preserving a smooth flow of goods across international borders. Hence, customs administrations are challenged to favor the introduction of IT systems that may enhance the ability to improve information sharing with the business sector, as well as with other governmental agencies. This is often not a straightforward process. As many experts point out, e-Government development projects fail commonly due to the lack of thorough understanding of administration requirements as well as barriers for implementation. Hence, the purpose of this study is to understand what factors enable or hinder the exploitation of e-Customs platforms. By means of a Systematic Literature Review (SLR), a theoretical framework is developed to identify drivers and barriers for usage of e-Government/e-Customs platforms. Thereby, a survey instrument was developed and data was collected in occasion of a World Customs Organization (WCO) Annual Council meeting, which was joined by around 400 customs delegates and officers from 178 WCO member administrations. A total of 94 questionnaires have been collected and analyzed, which gives an approximate response rate of 23% (46% considering only the 178 member administrations). The analysis of data has been performed by a combination of multivariate techniques and ANOVA. Results show that factors like cost-savings and ease of use significantly influence the usage of e-Customs platforms. On the contrary, cost-efficiency and usefulness of e-Customs platforms have no significant impacts. From the perspective of barriers preventing adoption, this paper identifies two main factors: 1) technical constraints and costs and 2) quality and trust. Both these factors significantly influence adoption of information sharing, in the context of business-customs communication. 相似文献
24.
Luca Benedetti Simona Quartieri Rinaldo Cervellati Daniela Perugini 《International Journal of Science Education》2013,35(4):439-445
Responses to a written beliefs test for 178 eighth grade students and interviews with a subset of the students are analysed to investigate students' beliefs about the tentativeness of scientific knowledge and about the autonomy and strategies appropriate for science learning. These three dimensions of beliefs are salient because they align with the image of science teaching promoted by current reform movements. Analyses focus on change in beliefs and relationships among dimensions of beliefs and between those beliefs and students' understandings of science concepts. Results show that students' beliefs do not change much during the one-semester course. Students who view scientific knowledge as tentative also try to understand science. Autonomous students do not hold the most productive learning strategies, though students with low autonomy develop significantly less coherent understandings of science concepts. Instructional implications focus on potential roles of teachers and technology in promoting productive beliefs about scientific knowledge and science learning. Implications for individualized instruction follow classroom-level implications. 相似文献
25.
This article investigates experimentally the effects of sensational content on viewing choices and satisfaction in television consumption. The authors found that the presence of verbal violence in one program causes subjects to watch more of that program. However, subjects do not experience higher satisfaction with the program. In addition, they report lower satisfaction with the overall viewing experience. These findings are robust to the use of different program types for the experimental manipulation. Overall, the results pose a challenge to the use of audience figures as a measure of enjoyment or satisfaction. 相似文献
26.
Luca Zavagno 《Al-Masaq: Islam & the Medieval Mediterranean》2019,31(2):140-157
ABSTRACT This contribution mainly focuses on Cyprus and the Balearics, islands located at opposite geographical extremes of the Byzantine Mediterranean, during the passage from Late Antiquity to the early Middle Ages. Historians have often regarded these islands as peripheral additions to the Byzantine heartland of the Aegean and the Anatolian plateau; this article argues that, in fact, archaeological and material indicators (such as ceramics, lead seals and coins), paired with the scarce textual sources, point to a certain degree of economic prosperity in the abovementioned islands during the period under scrutiny, suggesting that they continued to play an important role in the political, administrative and religious structures of the Byzantine Empire. A resilient insular economy and continuity of local production of artefacts was ensured by the persistence of demand from local secular and religious elites and regular, if infrequent, contacts with other areas of the Byzantine heartland or the Muslim Mediterranean. 相似文献
27.
Irena Vrecar Borut Peterlin Natasa Teran Luca Lovrecic 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):84-89
Introduction
Over the last few years, many private companies are advertising direct-to-consumer genetic testing (DTC GT), mostly with no or only minor clinical utility and validity of tests and without genetic counselling. International professional community does not approve provision of DTC GT and situation in some EU countries has been analysed already. The aim of our study was to analyse current situation in the field of DTC GT in Slovenia and related legal and ethical issues.Materials and methods
Information was retrieved through internet search, performed independently by two authors, structured according to individual private company and the types of offered genetic testing.Results
Five private companies and three Health Insurance Companies offer DTC GT and it is provided without genetic counselling. Available tests include testing for breast cancer, tests with other health-related information (complex diseases, drug responses) and other tests (nutrigenetic, ancestry, paternity). National legislation is currently being developed and Council of Experts in Medical Genetics has issued an opinion about Genetic Testing and Commercialization of Genetic Tests in Slovenia.Conclusions
Despite the fact that Slovenia has signed the Additional protocol to the convention on human rights and biomedicine, concerning genetic testing for health purposes, DTC GT in Slovenia is present and against all international recommendations. There is lack of or no medical supervision, clinical validity and utility of tests and inappropriate genetic testing of minors is available. There is urgent need for regulation of ethical, legal, and social aspects. National legislation on DTC GT is being prepared.Key words: Direct-to-consumer genetic testing, DTC, ethics in genetics, legislation 相似文献28.
In this study, we assessed the longitudinal effects of social-cognitive mechanisms on the self-reported use of doping substances and supplements among Italian high school students. In total, 1232 students completed questionnaires measuring various psychological factors hypothesized to influence students' intention to use substances. Three months later, 762 of the students completed the same questionnaires a second time and also reported their use of substances during the time between assessments. Overall, the percentages of students using doping substances (2.1%) or supplements (14.4%) were consistent with values reported in the literature. Analysis of the data showed that adolescents' intention to use doping substances increased with stronger attitudes about doping, stronger beliefs that significant others would approve of their use, a stronger conviction that doping use can be justified, and a lowered capacity to resist situational pressure or personal desires. In turn, stronger intentions and moral disengagement contributed to a greater use of doping substances during the previous 3 months. Doping use was also correlated significantly to supplementation. In conclusion, our results provide novel information about some of the psychological processes possibly regulating adolescents' use of doping substances and supplements. The results also highlight possible areas for future study and intervention, focusing on the prevention of adolescents' substance use. 相似文献
29.
The recording of cultural heritage objects' data and information is constructed throughout the registration of different media items, which function as an anchor of the original object in digital space. The article investigates the application of a theoretical framework for the organization of information related to the visual works, on the base of the identity of their single constituent elements. The framework is, then, used for the formalization of an ontology which is constructed as an extension of CIDOC-CRM. The result is tested with information gathered over the Asinou Church in Cyprus, expressed throughout an ontology for recording propositions over the iconographical attributes and the characteristic of images. 相似文献
30.
Luca Magni 《Interactive Learning Environments》2016,24(1):68-84
Many concurrent variables appear to influence people when they interact anonymously, either face-to-face (F2F) or in computer-mediated communications (CMC).This paper presents the results of a small exploratory research, conducted in a medical company in Italy, to investigate how the use of pseudonyms influences CMC behaviours.The study involved 32 newly hired or about-to-be hired graduates. Outcomes from this study show that, in the given organizational context, the use of pseudonyms in CMC produced more exchanges, higher verbosity and greater group collaboration. 相似文献