15,753 research outputs found

    A road-map to personalized context-aware services delivery in construction

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    Existing mobile IT applications in the construction industry are constrained by their reliance on static methods of information delivery, which are often not appropriate to meet changing work demand resulting from dynamic project conditions. This paper focuses on a new interaction paradigm i.e. context-aware information delivery (CAID), which promises to make information provisioning more responsive to workers’ changing work demands. A roadmap to personalized CAID in construction is laid out, with a focus on creating a pervasive user-centred intelligent work environment capable of serving relevant information needs of busy construction professionals by intelligent interpretation of their context. Research approach includes use of scenario planning method. Face-to-face unstructured interviews were arranged with 28 industry and technology experts for scenario validation and provided input for the road-mapping exercise. The research demonstrates that the realisation of the CAID vision is within reach and will tremendously enhance the value proposition of mobile information technology in the construction industry. Context-relevant and personalised information delivery will save valuable time and has the potential to improve efficiency and productivity. It can make construction ICT applications and worker’s immediate work environment more responsive to work demands, thereby allowing better management of construction projects. A key challenge is to link various technology enabling elements with methodological, cultural, social and organisational aspects specific to the construction industry. This would require a multi-disciplinary approach requiring input from different fields, including computer science, ergonomics, social studies and the construction industry

    Digital ethnography

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    Standardization Framework for Sustainability from Circular Economy 4.0

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    The circular economy (CE) is widely known as a way to implement and achieve sustainability, mainly due to its contribution towards the separation of biological and technical nutrients under cyclic industrial metabolism. The incorporation of the principles of the CE in the links of the value chain of the various sectors of the economy strives to ensure circularity, safety, and efficiency. The framework proposed is aligned with the goals of the 2030 Agenda for Sustainable Development regarding the orientation towards the mitigation and regeneration of the metabolic rift by considering a double perspective. Firstly, it strives to conceptualize the CE as a paradigm of sustainability. Its principles are established, and its techniques and tools are organized into two frameworks oriented towards causes (cradle to cradle) and effects (life cycle assessment), and these are structured under the three pillars of sustainability, for their projection within the proposed framework. Secondly, a framework is established to facilitate the implementation of the CE with the use of standards, which constitute the requirements, tools, and indicators to control each life cycle phase, and of key enabling technologies (KETs) that add circular value 4.0 to the socio-ecological transition

    Exploring individual differences in online addictions: the role of identity and attachment

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    Research examining the development of online addictions has grown greatly over the last decade with many studies suggesting both risk factors and protective factors. In an attempt to integrate the theories of attachment and identity formation, the present study investigated the extent to which identity styles and attachment orientations account for three types of online addiction (i.e., internet addiction, online gaming addiction, and social media addiction). The sample comprised 712 Italian students (381 males and 331 females) recruited from schools and universities who completed an offline self-report questionnaire. The findings showed that addictions to the internet, online gaming, and social media were interrelated and were predicted by common underlying risk and protective factors. Among identity styles, 'informational' and 'diffuse-avoidant' styles were risk factors, whereas 'normative' style was a protective factor. Among attachment dimensions, the 'secure' attachment orientation negatively predicted the three online addictions, and a different pattern of causal relationships were observed between the styles underlying 'anxious’ and 'avoidant' attachment orientations. Hierarchical multiple regressions demonstrated that identity styles explained between 21.2 and 30% of the variance in online addictions, whereas attachment styles incrementally explained between 9.2 and 14% of the variance in the scores on the three addiction scales. These findings highlight the important role played by identity formation in the development of online addictions

    Service quality in multichannel fashion retailing:an exploratory study

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    Purpose Consumer purchasing behaviour has changed substantially in the light of recent developments in E-commerce. So-called ‘multichannel customers’ tend to switch retail channels during the purchasing process. In order to address changing consumer behaviour, multichannel fashion retailing companies must continue to learn how to provide excellent service to such customers. The overall aim of this paper, therefore, is to contribute to the interpretation of multichannel service quality by explaining it from the perspective of the so-called ‘multichannel customers’. Design/Methodology/Approach Drawing on social influence theory, this paper aims to investigate these issues from the perspective of multichannel customers. In contrast with dualist and objectivist studies this paper uses a constructivist epistemology and ethnographic methodology. Such an approach is associated with an interpretivist ontological worldview, which postulates the existence of ‘multiple realities’. The sample size for this research consisted of 34 in-depth interviews and two focus groups comprising ten focus group participants. Findings The data analysis fundamentally found that multichannel customers tended to continually adjust choices regarding retailer and retail channel when making purchases. The perspective of this paper is different from mainstream positivist service quality research which sees service quality as static, objectively measurable and dualistic. As an alternative, this paper acknowledges service quality as a dynamic, subjective and pluralistic phenomenon. Originality/Value This paper contributes to the interpretation of multichannel service quality with a new concept that explains the phenomenon from the perspective of customers and thus considers it necessary for multichannel retailers to adopt strategies relating to customers’ changing behaviour

    ESPRESSO – systEmic Standardisation apPRoach to Empower Smart citieS and cOmmunities

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    Innovative Informations- und Kommunikationstechnologie ist ein SchlĂŒsselelement bei der Transformationzur Smart City. Aus technologischer Sicht muss in den stĂ€dtischen IKT-Netzwerken ein bestimmter Standardisierungsgrad erreicht werden. Diese Standards mĂŒssen gleichermaßen fĂŒr Stadtverwaltungen, Unternehmen und BĂŒrger offen sein und so innovative Bottom-up-Lösungen ermöglichen. Das ESPRESSO-Konsortium umfasst Partner aus Smart Cities, öffentlichen Verwaltungen, europĂ€ischen Normungsorganisationen, nationalen Normungsgremien,Standardentwicklungsorganisationen, Industrievertretern und Forschungseinrichtungen. Das Hauptziel von ESPRESSO ist es, die InteroperabilitĂ€t von Smart City-Lösungen sicherzustellen. Dies hilft StĂ€dten, Eintrittsbarrieren oder die AbhĂ€ngigkeit von Anbietern zu vermeiden, indem sie gemeinsame Metadatenstrukturen und Anstelle von ProprietĂ€ten, offeneinteroperable Schnittstellen verwenden. Um dieses Ziel zu erreichen, hat ESPRESSO ein konzeptionelles Smart-City-Informations-Framework entwickelt, das auf offenen Standards basiert. FĂŒr diesen Rahmen ist es notwendig, ein gemeinsames Smart City-Vokabular zu entwickeln und Referenzarchitektur sowie Stadtinformationsindikatoren zu definieren. Im Rahmen des Projekts wurde ein auf Fallstudien basierender Ansatz verwendet, um SchlĂŒsselanforderungen fĂŒr weitere StandardanalyseaktivitĂ€ten zu identifizieren. Durch eine zusĂ€tzliche StĂ€rken-SchwĂ€chen-Analyse wurden sowohl existierende als auch neu entwickelte Standards untersucht, umdie aktuell verwendeten Standards zu verbessern und verlĂ€sslichere fĂŒr die Zukunft zu entwickeln. Die meisten der ursprĂŒnglich entwickelten Smart City Konzepte konzentrieren sich auf die Optimierung und Effizienz des Siedlungsraums. HĂ€ufig sind diese AnsĂ€tze top-down organisiert und betrachten den sozialen Stadtbereich nur unzureichend. Um die sozialen Auswirkungen und die gesellschaftliche Akzeptanz der entwickelten Lösungen zu verbessern, hat ESPRESSO ein Stakeholder-Kommunikationsnetzwerk eingerichtet, das einen frĂŒhen Dialog zwischen allen Beteiligen ermöglicht. Zur UnterstĂŒtzung des theoretischen Ansatzes hat ESPRESSO vier Fallstudien in zwei PilotstĂ€dten, Rotterdam (Niederlande) und Tartu (Estland), durchgefĂŒhrt. Dabei wurde in unterschiedlichen Szenarien der Einsatz von standardisierten Smart City Lösungen getestet und anschleißend analysiert

    The Impact of a Multi-user Virtual Environment on Teacher Instructional Time, Voluntary Student Writing Practice, and Student Writing Achievement

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    Thesis (PhD) - Indiana University, School of Education, 2006Two major obstacles to using PBL methods in K-12 classrooms are the time it takes to design the rich learning environment and the time required for students to interact at their own pace with ill-structured problems. The focus of this study was to determine whether game-design design principles can be used to both compliment a digital PBL environment and improve student learning. Further, this study sought to determine whether such a design could allow teachers to act as a challenger of poorly developed knowledge constructs instead of as a font of directional and procedural knowledge for students To answer these questions a digital learning environment was designed that used embedded scaffolds, nested goals, clue trails, narrative context, and explicit rules to improve student writing. This unit was part of a larger multi-user virtual environment, but was designed to be a self-contained unit that leveraged advanced technologies to establish an immersive experience for learning writing skills. The unit was designed to be two-times per week for four weeks in total length which included student training on the active role of a reporter who investigated mysteries taking place in a virtual town. The learner then composed feature stories relating their understanding of the mystery. A comparison class was recruited and the teacher was observed teaching the same content and skill standards but through more didactic methods of instruction. The results of this study showed that the treatment condition had decreases in teacher time spent answering procedural and directional questions, increases in the amount of voluntary student writing activity, and improvements in standardized achievement scores on prompts that consisted of writing tasks similar to those that students participated in during the treatment. Students engaged fully with the learning environment although several tensions emerged. These included tensions between student perceptions of teacher rules versus system rules, student play versus completion of learning tasks, and whether they should learn through the system by reading versus being told what to do. Student disabilities were also encountered during the study which placed the system under a different kind of test than it was designed for, though it successfully engaged these students as well. A final tension arose in the result of the research methods themselves, bringing home the point that a need to capture data may interfere with the learner's experience, possibly reducing or improving the impact of the treatment itself

    Vortex of the Web. Potentials of the online environment

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    This volume compiles international contributions that explore the potential risks and chances coming along with the wide-scale migration of society into digital space. Suggesting a shift of paradigm from Spiral of Silence to Nexus of Noise, the opening chapter provides an overview on systematic approaches and mechanisms of manipulation – ranging from populist political players to Cambridge Analytica. After a discussion of the the juxtaposition effects of social media use on social environments, the efficient instrumentalization of Twitter by Turkish politicans in the course of the US-decision to recognize Jerusalem as Israel’s capital is being analyzed. Following a case study of Instagram, Black Lives Matter and racism is a research about the impact of online pornography on the academic performance of university students. Another chapter is pointing out the potential of online tools for the successful relaunch of shadow brands. The closing section of the book deals with the role of social media on the opinion formation about the Euromaidan movement during the Ukrainian revolution and offers a comparative study touching on Russian and Western depictions of political documentaries in the 2000s
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