Jimin Kim, Goya Choi, Younghoon Chang and Myeong-Cheol Park
The purpose of this paper is to investigate the use contexts of personal computing devices in multiple steps and conducts an in-depth analysis for the use context of smartphones…
Abstract
Purpose
The purpose of this paper is to investigate the use contexts of personal computing devices in multiple steps and conducts an in-depth analysis for the use context of smartphones. The determinants of use context changes of smartphones are investigated using the technology-to-performance chain model.
Design/methodology/approach
In steps 1 and 2, a diary study method and 2014-2015 Korea media panel research data provided by the Korea Information Society Development Institute are used. Correspondence analysis, χ2 independence tests, and standardized residual analyses were conducted. In step 3, this study develops and validates a framework for use context changes using a survey method and structural equation modeling.
Findings
The results show that the use context of personal computing devices is represented differently and is clearly defined depending on the device used. Furthermore, the use context of smartphones has changed significantly because of the rapid growth of smartphone users and diverse usage patterns of smartphones. The research model results show that users expand the scope and frequency of smartphone use when they experience improved performance in everyday tasks and feel that smartphone content and functions could support everyday tasks better.
Originality/value
This study presents novel early stage research and presents empirical evidence and propositions in both exploratory and confirmatory ways. The main contribution of this study is to provide guidelines and general implications for other empirical studies on the use contexts of devices or information technology services.
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Jimin Kim, Yun Jeong Kim, Myounghee Shim, Youngmin Jun and Changsang Yun
This study aims to create a classification system enabling users of 3D virtualization software to intuitively perceive the drapability of fabrics.
Abstract
Purpose
This study aims to create a classification system enabling users of 3D virtualization software to intuitively perceive the drapability of fabrics.
Design/methodology/approach
1,001 fabrics were used, and thickness, bending property, and tensile strength were identified as main mechanical properties influencing drapability; they have been set as independent variables in the model established to predict drape coefficient.
Findings
A system to classify fabrics into eight groups by drapability was suggested by a cluster analysis, and a multinomial logistic regression analysis was used to set a model that allows users to predict which group a fabric belongs to from its mechanical properties.
Originality/value
This paper provided basic materials for the construction of a virtual clothing simulation system, which is believed to contribute to cost and time savings in decision-making by reducing the number of trials and errors required by the conventional approach.
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The US stock market and especially the seven largest technology companies have powered the rally, but markets in Europe and Asia have also risen on better-than-expected economic…
Details
DOI: 10.1108/OXAN-DB287405
ISSN: 2633-304X
Keywords
Geographic
Topical
Electrification of transport is central to President Joe Biden's climate agenda but November's election threatens US carmakers' costly investments in their EV transition. Already…
Details
DOI: 10.1108/OXAN-DB288854
ISSN: 2633-304X
Keywords
Geographic
Topical
Yulei Yang, Jimin Xu and Yi Liang
Quantitative fretting wear prediction is of practical significance for industrial components. This study aims to establish a fretting wear model considering the formation of…
Abstract
Purpose
Quantitative fretting wear prediction is of practical significance for industrial components. This study aims to establish a fretting wear model considering the formation of tribolayers and provide better fretting wear prediction.
Design/methodology/approach
Based on the characteristics for the formation of tribolayers, the ratio of fretting amplitude to nominal contact area length in the fretting direction is used to characterize their formation and contribution to the wear volume. The wear volume is then associated with the product of the friction energy and the ratio of fretting amplitude to nominal contact area length.
Findings
Better prediction in the wear volume can be achieved with the proposed fretting wear model by taking the formation of tribolayers into consideration.
Originality/value
The contribution of the formation of tribolayers to the wear volume is considered in the model and better prediction can be achieved.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-01-2023-0004/
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Sung-Byung Yang, Sunyoung Hlee, Jimin Lee and Chulmo Koo
The purpose of this study is to explore the effect of two types of presentation formats (textual and imagery) involving online restaurant reviews (ORRs). The study examines ORRs…
Abstract
Purpose
The purpose of this study is to explore the effect of two types of presentation formats (textual and imagery) involving online restaurant reviews (ORRs). The study examines ORRs on the basis of review usefulness and review enjoyment; the study investigates the effects of the two presentation formats on review usefulness and review enjoyment.
Design/methodology/approach
Data from 1,776 reviews were collected from Yelp.com using a Web data-harvesting technique. Hypothesized relations in the model were tested by Tobit regression analysis.
Findings
Empirical results show that different formats of ORRs affect review usefulness and review enjoyment in different manners; whereas both attributes of textual format (review length and readability) affect review usefulness, both aspects of imagery format (physical environment images and food and beverage images) are positively related to review enjoyment. However, review length and food and beverage images are the most important factors affecting both review usefulness and review enjoyment. In particular, the relation between the two formats of ORRs and review usefulness is mediated by review enjoyment.
Research limitations/implications
The focus of this study is the two formats of ORRs in terms of dual coding theory and the mediating role of review enjoyment. The findings help online review website organizers manage the operation of various review formats in a proper manner. Managers can effectively select those formats that would achieve the desired effect.
Originality/value
Unlike previous studies on the relation of attributes to online reviews, this study examines the perceptions of ORRs’ usefulness and enjoyment. In addition, this study encompasses diverse ORR factors (review length, review readability, physical environment images, food and beverage images) for a more comprehensive interpretation of ORRs.
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Yuan George Shan, Indrit Troshani, Jimin Wang and Lu Zhang
This study investigates the convergence-of-interest and entrenchment effects on the relationship between managerial ownership and financial distress using evidence from the…
Abstract
Purpose
This study investigates the convergence-of-interest and entrenchment effects on the relationship between managerial ownership and financial distress using evidence from the Chinese stock market. It also analyzes whether the relationship is mediated by research and development (R&D) investment.
Design/methodology/approach
Using a dataset consisting of 19,059 firm-year observations of Chinese listed companies in the Shanghai and Shenzhen Stock Exchanges between 2010 and 2020, this study employs both piecewise and curvilinear models.
Findings
The results indicate that managerial ownership has a negative association with firm financial distress in both the low (below 12%) and high (above 18%) convergence-of-interest regions of managerial ownership, suggesting that managerial ownership in this region may contribute to improve firm financial status. Meanwhile, managerial ownership has a positive association with firm financial distress in the entrenchment region (12–18%), implying that managerial ownership in the entrenchment region may contribute to impair firm financial status. Furthermore, the results show that R&D investment mediates the association between managerial ownership and financial distress.
Originality/value
This study is the first to provide evidence of a nonlinear relationship between managerial ownership and financial distress, and identify the entrenchment region in the Chinese setting.
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Jinlong Shen, Tong Zhang, Jimin Xu, Xiaojun LIU and Kun Liu
This paper aims to improve the tribological performance of grease-lubricated spherical plain bearings (SPBs) under heavy load, dimple-type textures were prepared by laser on the…
Abstract
Purpose
This paper aims to improve the tribological performance of grease-lubricated spherical plain bearings (SPBs) under heavy load, dimple-type textures were prepared by laser on the outer surface of the inner ring. The influence of roughness parameters of a textured surface on reducing friction coefficient and temperature rise was also explored.
Design/methodology/approach
This study adopts a laser processing method to fabricate dimple-type textures. Three-dimensional roughness parameters were used to characterize the textured surfaces. The friction coefficients of five SPBs with surface texture and one original commercially available SPB without surface texture under different nominal loads were measured on a self-established test rig. The data of temperature rise were obtained by nine embedded thermal couples.
Findings
The results indicate that SPBs with textures generally exhibit lower friction coefficients than the original SPB without textures. The dimple depth has a significant influence on improving the tribological performance, which coincides with the analysis by surface roughness parameters. A textured surface with negative Ssk and high Vvc has the minimum temperature rise.
Originality/value
As it is too difficult to arrange sensors into heavy-load SPBs, there are few reports about the temperature characteristics. Through nine embedded thermal couples, the distribution of temperature rise on the inner ring of SPBs was given in this study. The positive effect of surface texture on reducing temperature rise and friction coefficient was verified, which is beneficial for the design of heavy-load SPBs.
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Chunjie Wei, Qi Chen, Jimin Xu, Xiaojun Liu and Wei Wang
The purpose of this paper is to explore the operating characteristics of gallium-based liquid metals (GLMs) by directly adding them as lubricants in real mechanical equipment.
Abstract
Purpose
The purpose of this paper is to explore the operating characteristics of gallium-based liquid metals (GLMs) by directly adding them as lubricants in real mechanical equipment.
Design/methodology/approach
This paper conducts an analysis of the rotor-bearing system under GLM lubrication using a constructed test rig, focusing on vibration signals, surface characteristics of the friction pair, contact resistance and temperature rise features.
Findings
The study reveals that GLM can effectively improve the lubrication condition of the tribo-pair, leading to a more stable vibration signal in the system. Surface analysis demonstrates that GLM can protect the sample surface from wear, and phase separation occurs during the experimental process. Test results of contact resistance indicate that, in addition to enhancing the interfacial conductivity, GLM also generates a fluid dynamic pressure effect. The high thermal conductivity and anti-wear effects of GLM can reduce the temperature rise of the tribo-pair, but precautions should be taken to prevent oxidation and the loss of its fluidity.
Originality/value
The overall operating characteristics of the rotor-bearing system under GLM lubrication were investigated to provide new ideas for the lubrication of the rotor-bearing system.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-03-2024-0067/
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Kyuho Lee, Melih Madanoglu, Steve W. Henson and Jae-Youn Ko
Confucian philosophy emphasizes gender roles that place significant restrictions on the consumption of non-traditional products. The authors use wine to advance our understanding…
Abstract
Purpose
Confucian philosophy emphasizes gender roles that place significant restrictions on the consumption of non-traditional products. The authors use wine to advance our understanding of how South Korean female consumers have established a new female gender role and identity by adopting new communities that allow non-traditional consumption while still accepting gender roles. This paper aims to examine how South Korean female consumers create a unique consumption culture with respect to wine consumption.
Design/methodology/approach
A hermeneutic approach was adopted to understand what motivates South Korean female consumers to join a wine consumption community and their perceptions about consuming wine. Researchers conducted 26 semi-structured face-to-face interviews that ranged from 45 to 120 min, with an average duration of 1 h.
Findings
The results of the study suggest that wine can be a medium for emancipating women from traditional gender roles and social images of women embedded in South Korean society that call for women to sacrifice themselves for their families. In addition, the study’s findings suggest that Western wine marketers need to understand the power of wine consumption communities that are a unique consumption ritual among South Korean female wine consumers.
Originality/value
South Korean female respondents drink wine as both a way to seek pleasure through a Western alcoholic beverage and to consume and experience Western culture and lifestyles. However, South Korean female respondents tend to drink wine within consumption communities, which are a powerful consumption ritual in South Korea. In other words, although South Korean female respondents consume wine to experience and learn about Western culture and lifestyles, they have entirely not abandoned their traditional consumption rituals.