Hideyuki Takahashi, Kazuhiro Yamanaka, Satoru Izumi, Yoshikazu Tokairin, Takuo Suganuma and Norio Shiratori
Real‐time multimedia supervisory systems generally include a distributed system that delivers live video input captured with cameras at the watched person's site, using a PC or…
Abstract
Purpose
Real‐time multimedia supervisory systems generally include a distributed system that delivers live video input captured with cameras at the watched person's site, using a PC or hand‐held device at the distant supervisor's site. The system comprises many entities such as cameras for image capture, transmission software, network connections, receiver software, a display device, multimedia processing software and hardware, control software, etc. The purpose of this paper is to realize a safe and convenient supervisory system that autonomously provides users with services that fulfill users' requirements related to quality and privacy in a ubiquitous information environment.
Design/methodology/approach
A system is designed by integrating environmental information acquired from the real world and knowledge related to human social activities. A real space understanding mechanism is proposed to infer the situations and relationships of users by combining sensing information and social knowledge. Social knowledge related to human relationships, the life style of the watched person, home structure, etc. is used with ontology to infer the situations of users.
Findings
An early prototype was implemented for supervising elderly people and some experiments were performed based on several scenarios. Results obtained from some experiments confirmed that this supervisory system can provide real‐time multimedia supervisory services for elderly people, with reasonable quality‐of‐service and privacy that meet the users' requirements.
Originality/value
The system described in this paper assesses the situation of users and surrounding environmental information to provide appropriate supervisory services. This paper provides insight into the design and development of ubiquitous application systems to realize comfortable and safe services using a combination of environmental information and social knowledge.
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Reza Fallahtafti and Mohammadjavad Mahdavinejad
Natural ventilation is an environmentally friendly effective way of improving thermal comfort and the quality of indoor conditions if applied properly. This study aims to…
Abstract
Purpose
Natural ventilation is an environmentally friendly effective way of improving thermal comfort and the quality of indoor conditions if applied properly. This study aims to investigate the physical mechanism of the air movement and also the influence of building geometry in a cross-ventilated room through a parametric study of window geometrical characteristics using computational fluid dynamics.
Design/methodology/approach
Momentum and continuity equations are solved by the control volume method using a commercially available software. Standard k−ɛ turbulence model is employed to simulate the incompressible airflow and SIMPLE algorithm to solve the conservation equations. Mean air velocity magnitude is measured at three different surfaces of different heights, and the effect of incoming wind velocity inside the building is studied.
Findings
The research concluded that window hood and sill projections reduce indoor wind velocity magnitude, play a major role in incoming wind direction and thus have a crucial impact on wind circulation and indoor air quality.
Social implications
The paper has evaluated redesigning of a both practical and ornamental architectural element named Palekaneh, which is found in many historical buildings in several hot places in the world. Its optimal design could increase indoor natural ventilation quality and decrease a space's cooling load. Therefore, a new passive cooling architectural element could be re-introduced to the regions previously enjoying such ornaments. This is economically efficient because it eventually saves a considerable amount of energy in the long run and is socially important because of the revitalization of architectural identity.
Originality/value
The role of a building envelope's physical features, although being studied for solar absorption and daylight availability, has rarely been investigated for natural ventilation, especially in a small scale, thus making the paper novel in this regard. This provides a guideline for designers to assess the impact of their design on redirecting wind-induced natural ventilation the very early stages of design.
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Mahadev Bera, Sumanta Das, Suman Dutta, Pranab Kumar Nag and Malini Roy Choudhury
The study aims to synthesize findings from over two decades of research, highlighting key trends, progress, innovations, methodologies and challenges in bioclimatic design…
Abstract
Purpose
The study aims to synthesize findings from over two decades of research, highlighting key trends, progress, innovations, methodologies and challenges in bioclimatic design strategies and their interconnection with building environmental performance across the world.
Design/methodology/approach
This systematic review examines advancements in bioclimatic design strategies aimed at enhancing the environmental performance of buildings from 2000 to 2023 (n = 1,069). The methodology/approach involves a comprehensive analysis of literature from the SCOPUS database using bibliometric analysis, identifying trends, thematic evolution, keyword clusters and pivotal strategies such as passive solar design, natural ventilation, green roofs and thermal mass utilization.
Findings
The review highlights significant progress in several areas, including improved simulation/modeling tools for passive solar design, advanced computational fluid dynamics models for natural ventilation optimization, and the integration of green roofs with photovoltaic systems for increased building energy efficiency. Additionally, the use of phase change materials and high-performance glazing has reduced heating and cooling loads, while real-time optimization technologies have enhanced building performance and led to energy savings.
Research limitations/implications
The study recognizes limitations where the effectiveness of bioclimatic strategies varies across different climates. For example, passive solar design is highly effective in temperate climates but less so in tropical regions. Global differences in design preferences and building types and practices impact the applicability of bioclimatic strategies and traditional building methods in some cultures may not easily integrate with modern approaches, affecting their implementation and effectiveness. Furthermore, practical implications highlight the potential for reduced reliance on artificial heating, cooling and lighting systems, while social implications underscore the role of bioclimatic design in promoting sustainable construction practices.
Practical implications
Practical implications highlight the potential for reduced reliance on artificial heating, cooling and lighting systems.
Social implications
Social implications underscore the role of bioclimatic design in promoting sustainable construction practices.
Originality/value
This review offers a detailed analysis of bioclimatic design evolution, highlighting trends such as adaptive building designs and smart materials. This study serves as a crucial resource for architects, engineers and policymakers, advocating for innovative, climate-responsive design solutions to mitigate the environmental impact of the built environment and address challenges related to climate change and urbanization.
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Kristina Leppälä and Hanna Lehtimäki
Social practices of work humor among engineering workers are a lesser studied phenomenon. We examine the social practices of an engineering work team through acts of a peculiar…
Abstract
Purpose
Social practices of work humor among engineering workers are a lesser studied phenomenon. We examine the social practices of an engineering work team through acts of a peculiar form of humorous expression we identify as installation humor. In these cases of installation humor, an anonymous member of the team created a temporary, inappropriate, yet neutral installation of a physical object to amuse the other members of the team. We provide three mini-cases of installation humor; these installations appeared as the team subtly resisted a managerial initiative. We contribute knowledge to the practices of engineers at work and to the practices of resistive humorous expression.
Design/methodology/approach
Qualitative, full-participant ethnographic research with multiple data collection methods and utilizing abductive analysis. During the data collection, one of the researchers was a full member of the engineering team.
Findings
We identified anonymous, artefact-based enactments of resistive humorous expression, which we named installation humor. We identify and describe installation humor, which occurred at the intersectionality of work and self-expression and served as momentary artefacts symbolic of engineering worker resistance in a high-tech environment.
Research limitations/implications
Managerial awareness of the unfolding forms of worker-led, fleeting signals of resistance, such as acts of installation humor, would provide another dimension of perception for identifying salient signals surrounding the phenomenon of resistance to managerial-led change initiatives. Further research is needed on engineering humor in the R&D workplace to better understand the complexity and dynamics of phenomena such as worker resistance through humorous acts. We suggest future studies on forms of humor in the engineering workplace, including incidences of installation humor as they exist in other professional work environments and organizations, to understand common and shared practices across professional boundaries.
Practical implications
We advance and extend the understanding of humor as a social practice in the context of professional engineers in their R&D workplace and we identify humorous acts serving as a response to negative emotions (Huber, 2022) toward the organization related to a newly instated form of managerial control. This paper contributes to the studies of social practices of humor and emotions (Fine and De Soucey, 2005) in the engineering workplace (Buch and Andersen, 2013; Buch, 2016; Mazzurco et al., 2021) as unsupervised activity at work (Gabriel, 1995), with the social practice of humor adopting a non-verbal form that we identified as installation humor. We named this specific form of humor that we observed as installation humor and defined its specificity and differences from more traditional methods of humor (t. ex. Fine and De Soucey, 2005; Martin and Ford, 2018), shop floor humor (t. ex. Roy 1959), workplace humor (t. ex. Rosenberg et al., 2021) and engineering student humor (Holmila et al., 2007; Bender, 2011; Berge, 2017).The results of this study also suggest that ethnography for studying humor as a social practice is useful in identifying micro-level occurrences of unfolding engineering humor, including humor as a form of resistance.
Social implications
The study of humor in high-tech engineering settings enhances the literature of engineering work (t. ex. Mazzurco et al., 2021) and emerging humorous phenomena (Jarzabkowski and Lê, 2017). This case study highlights and extends the understanding of the non-technical competencies of engineers and the role of peer-to-peer humor in the engineering workplace as a form of resistance during managerial initiatives within an organization.
Originality/value
The study extends and contributes new knowledge to research on emotions and humor by engineers at work, including the identification of a peculiar form of humor used by the engineers. This study also contributes to nascent research on the social practices of engineers at work. The research material was gathered as a full-member ethnography, increasing methodological knowledge of researching a site from within.
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S. Inui, H. Okabe and T. Yamaraka
In our previous study, seam pucker simulation baased on mechancial calculation was proposed. Here, the simulation system is extended to consider collision between fabrics and seam…
Abstract
In our previous study, seam pucker simulation baased on mechancial calculation was proposed. Here, the simulation system is extended to consider collision between fabrics and seam pucker simulation of two strips of fabric is carried out. We adopt non‐linear bending rigidity observed in actual fabric tests and obtained results much closer to the real results. With the consideration of collision and the improved treatment of bending rigidity, the following results were obtained. The wave length of wrinkles is more broadly distributed when material puckering is 0.96 or 0.94 compared to the case of 0.98. The wave length increases as the value of bending rigidity does and decreases as Young’s modulus increases. In the case of two strips seam pucker, the distribution of the wave length is wider than the case of the single strip.
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S. Inui and T. Yamanaka
States that computer simulations of seam pucker were executed. The simulations were based on the computer program which predicts the shape of virtual fabric with an assumption…
Abstract
States that computer simulations of seam pucker were executed. The simulations were based on the computer program which predicts the shape of virtual fabric with an assumption that the relationship between stress and strain of the virtual fabric is linear. The simulations predicted the shape of fabric with the conditions such as material puckering and mechanical properties of fabric. The rating of simulated seam pucker changes according to material puckering. It was shown that bending stiffness and tensile modulus affect the rating of seam pucker. Seam pucker samples were made from fabric for comparison. Computerised seam pucker samples were executed utilising the same properties and shape of seam line as the sample fabric. A fairly similar shape was obtained by the simulation.
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Meryem Amane, Karima Aissaoui and Mohammed Berrada
Together, learning objects (LOs) and e-pedagogical practices have the potential to improve the performance of e-learning systems in several ways. They can make e-learning more…
Abstract
Purpose
Together, learning objects (LOs) and e-pedagogical practices have the potential to improve the performance of e-learning systems in several ways. They can make e-learning more personalised and adaptable, providing students with a more engaging and effective learning experience.
Design/methodology/approach
The development of LOs and e-pedagogical practices have significantly influenced and changed the performance of e-learning systems. LOs are self-contained, reusable units of instructional content that create instructional materials, such as online courses, tutorials and assessments. They provide a flexible and modular approach to designing and delivering e-learning content, allowing educators to easily customise and adapt their materials to the needs of their students. e-pedagogical practices refer to the use of technology to enhance and support the teaching and learning process. They include strategies such as online collaboration, gamification and adaptive learning to improve student engagement, motivation and achievement.
Findings
To achieve this objective, this study consists of two main phases. First, the authors extract metadata from LOs using latent semantic analysis algorithms, which are considered a strong tool in web-mining exploration techniques. Second, they identify LOs according to a particular form of similarity using fuzzy c-means (FCM) algorithms. To improve classification accuracy, the FCM is used as a clustering algorithm.
Originality/value
Finally, in order to assess the effectiveness of LOs with FCM, a series of experimental studies using a real-world dataset are conducted. The results of this study indicate that the proposed approach exceeds the traditional approach and produces good results.
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Liufang Zhang and Ing Grace Phang
This study aims to examine the impact of non-fungible tokens (NFTs’) characteristics on Chinese consumers’ purchase intention towards luxury fashion physical products. It also…
Abstract
Purpose
This study aims to examine the impact of non-fungible tokens (NFTs’) characteristics on Chinese consumers’ purchase intention towards luxury fashion physical products. It also investigates the mediating role of perceived hedonic value and moderating role of perceived NFT–physical product fit during the buying process.
Design/methodology/approach
A conceptual model combining Stimuli–Organism–Response Model and Theory of Consumption Value was established. A purposive sampling method was adopted to collect data from luxury fashion consumers aged 21–41 who lived in four Tier 1 cities in China. Structural equation modelling and SmartPLS 4.0 were utilized to analyse the 304 valid questionnaires collected.
Findings
The study’s findings indicate that luxury fashion NFTs with four characteristics (NFT scarcity, NFT exclusivity, NFT design aesthetic and NFT novelty) affect Chinese consumers’ purchase intention towards luxury fashion physical products positively, with perceived hedonic value mediating these relationships. Further, perceived NFT–physical product fit moderates the relationship between perceived hedonic value and purchase intention.
Originality/value
This study bridges a gap in investigating the interplay between NFTs as intangible collectibles and tangible products, by stressing the significant role played by NFTs in influencing the purchase intention of luxury fashion products. This paper contributes to an understanding of consumers’ psychological responses and behaviours towards NFTs, providing a new perspective in the study of luxury fashion NFTs in the context of marketing strategy and consumption.
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Transport governance is dependent on, and works through, legally defined or socially accepted categories that are challenged by the technological and business disruptions that…
Abstract
Transport governance is dependent on, and works through, legally defined or socially accepted categories that are challenged by the technological and business disruptions that characterize smart mobility. This chapter explores the dynamic interactions between the categories of transport governance and new (disruptive) forms of mobility, using a framework that highlights the ways governance solutions are influenced by how problems are framed. The argument is made through two empirical cases – of car sharing and motorized (electric) personal mobility devices. Car sharing emerged quietly onto the transport landscape in Australia, and has been accommodated and facilitated by local government parking policies. In this case, the tools for governing smart mobility already existed, and became adaptable to new imperatives. Personal mobility devices (PMDs), battery-powered motorized devices designed to be used by an individual on footpaths or shared user paths, are neither common nor legal on many roads or footpaths. The process through which PMDs became regulated in the Australian state of Queensland is used to illustrate the ways in which ‘epistemic experimentation’ can challenge regulatory framings and foster the introduction of new forms of smart mobility. The chapter concludes that smart mobility both disrupts and confirms dominant framings of transport governance, especially in relation to automobility, and that further challenges will need to be met as autonomous vehicles become more widespread across transport infrastructure.
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Abu Hanifa Md. Noman, Che Ruhana Isa, Md Aslam Mia and Chan Sok-Gee
This study aims to examine the impact of activity restrictions in shaping the risk-taking behaviour of banks through the channel of competition in different economic conditions.
Abstract
Purpose
This study aims to examine the impact of activity restrictions in shaping the risk-taking behaviour of banks through the channel of competition in different economic conditions.
Design/methodology/approach
The authors use a dynamic panel regression method, particularly a two-step system generalised method of moments to address the risk-taking persistence of banks and endogeneity of activity restrictions and competition with banks’ risk-taking using financial freedom and property rights as instrumental variables. Activity restrictions are computed by constructing an index based on the survey results of Barth et al. (2001, 2006, 2008 and 2013a). Competition is measured by the Panzar–Rosse H-statistic and risk-taking behaviour are measured by non-performing loan ratio and lnZ-score. In the investigation process, the authors control bank characteristics – size, efficiency, ownership and loan composition and macroeconomic factors – gross domestic product growth and inflation, and use 2,527 bank-year observations from 180 commercial banks of Association of the Southeast Asian Nations-five countries over the 1990–2014 period.
Findings
This study finds that activity restrictions exacerbate the risk-taking behaviour of the banks leading to changes in the channel of competition because of the “risk-shifting effect” of competition. The finding is robust by considering the financial crisis and alternative specifications.
Research limitations/implications
This study contributes to bank literature and policy formulation regarding the effect of activity restrictions on the risk-taking behaviour of banks, which is an issue of concern amongst bank regulators, policymakers and academics, especially in the aftermath of the 2008–2009 global financial crisis.
Practical implications
Understanding how the competition plays a role in the relationship between activity restrictions and the risk-taking of banks in different economic situations.
Originality/value
This study provides new insight into the bank literature by investigating the moderating role of competition on activity restrictions and the risk-taking behaviour of banks in a different economic environment.