A VR-Enabled Chatbot Supporting Design and Manufacturing of Large and Complex Power Transformers

Virtual reality (VR) immersive technology allows users to experience enhanced reality using human–computer interfaces (HCI). Many systems have implemented VR with improved HCI to provide strategic market advantages for industry and engineering applications. An intelligent chatbot is a conversational system capable of natural language communication allowing users to ask questions and receive answers online to enhance customer services. This research develops and implements a system framework for a VR-enabled large industrial power transformer mass-customization chatbot. The research collected 1272 frequently asked questions (FAQs) from a power transformer manufacturers’ knowledge base that is used for question matching and answer retrieval. More than 1.2 million Wikipedia engineering pages were used to train a word-embedding model for natural language understanding of question intent. The complex engineering questions and answers are integrated with an immersive VR computer human interface. The system enables users to ask questions and receive explicit and detailed answers combined with 3D immersive images of industrial sized power transformer assemblies. The user interfaces can be projected into the VR headwear or computer screen and manipulated with a controller. The unique immersive VR consultation chatbot system is to support real-time design consultation for the design and manufacturing of complex power transformers.

Power and Resistance: Digital-Free Tourism in a Connected World

Although digital-free tourism is growing in popularity, research in this area has not unpacked the complex power relations between humans and technology through a critical perspective. Building on Foucault’s analysis of power and resistance, we theorized technology as disciplinary power and conducted a collaborative autoethnography to explore how individuals resist the dominant discourse. Through a reflexive account, we theorize digital-free travel as a process of negotiating and rejecting the dominant discourse of technology, particularly through effective personal strategies of engaging in full disconnection, redefining punishments and rewards, recalling nostalgic memories, and constantly reflecting on embodied feelings and self-transformations in the power relations. Theoretically, this study contributes to understanding digital-free tourism through the lens of power and resistance; it also contributes to critical studies in technology and tourism. Methodologically, we emphasize the potential of applying collaborative autoethnography in analyzing embodied self-transformations. Practically, this study offers suggestions for digital-free tourism providers.

Cultural Well-Being in Classroom Communities in Australia

Well-being is an increasingly important topic of schooling policy and research internationally. While the concept of well-being is understood in various ways, little attention has been given to its cultural aspects. The convergence between culture, well-being, and learning is being realized, and the concept of cultural well-being presents new insights relevant to ongoing school reform efforts. Cultural well-being is a nascent concept in education considered to relate to students’ sense of connection to school, people, places, and cultures. A typology of cultural well-being produced from an Australian study of teachers’ perceptions depicts three prominent interpretations of culture: (a) school culture, (b) processes of recognition, and (c) cultural participation and production. The typology of cultural well-being enables the interrogation of complex power relations, revealing some of the ways that schools continue to reproduce social and cultural inequalities. The application of a typology of cultural well-being illustrates the interplay between school culture, recognition, and cultural participation and can support international initiatives to reform schooling with a greater emphasis on the well-being of all students, potentially addressing and reducing inequalities.

Beyond a standardised urban lexicon: which vocabulary matters?

Urban vocabulary has been influenced by global patterns of modernity, capitalism and anglophone academia. These lexicons are increasingly standardised and shape dominant conceptual approaches in city debates. However, contemporary urban theories indicate a shift toward understanding the ‘urban’ and ‘cities’ from multiple perspectives. An emerging urban vocabulary is being built to capture the significance of place, complex power dynamics and changing geographical landscapes. This special issue presents diverse perspectives on how urban lexicons can be decentred from anglophone thought, operate as organising urban logics, serve larger political projects, and shape and are reshaped by grounded urban practice. Articles from the Middle East and South Asia discuss the margins of vocabulary and how vocabularies located in the global South enable us to think through dilemmas of knowledge production. We contribute to debates on decolonising power and authority in urban thought by expanding on how to theorise from the South.

Three-phase Quaternion Power in Three-wire Systems

Instantaneous power theory has a central role in power systems analysis. Among mathematical settings used for the development of this theory, quaternion algebra has been used for describing electrical variables in recent works. In this context, this paper aims to describe three-phase power in a quaternion framework. We analyze quaternion power for balanced and unbalanced delta loads, comparing the expressions obtained to the usual expressions of complex power. The quaternion power expression obtained also makes it natural to introduce a decomposition of the unbalanced load in terms of a balanced component and an unbalanced load with null average power. It is also shown that delta unbalanced loads are equivalent to time-varying balanced loads. The results obtained extend the power systems theory in the quaternion domain and emphasize the advantages of using this framework.