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The purpose of this study is to reveal the underlying mechanism in film formation of oil-in-water (O/W) emulsion.

This study focuses on the film forming characteristics of O/W emulsion between the surface of a steel ball and a glass disc coated with chromium. The lubricant film thicknesses of O/W emulsion with various mechanical stirring strength were discussed, which were observed by technique of relative optical interference intensity.

The authors directly observed the oil pool in the contact area, finding the size of oil pool was closely related to the film-forming ability of emulsion. Enrichment phenomenon occurs in oil pool, which was caused by phase inversion. Further investigations revealed that the emulsion is stable with strong stirring strength, resulting in a smaller oil pool size and worse film forming ability.

With the wide usage of O/W emulsion in both biological and industrial systems, the ability of emulsion film formation is considered as an important factor to evaluate the lubrication effectiveness.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2022-0354/

This study aims to satisfy the thermal management of gallium nitride (GaN) high-electron mobility transistor (HEMT) devices, microchannel-cooling is designed and optimized in this work.

A numerical simulation is performed to analyze the thermal and flow characteristics of microchannels in combination with computational fluid dynamics (CFD) and multi-objective evolutionary algorithm (MOEA) is used to optimize the microchannels parameters. The design variables include width and number of microchannels, and the optimization objectives are to minimize total thermal resistance and pressure drop under constant volumetric flow rate.

In optimization process, a decrease in pressure drop contributes to increase of thermal resistance leading to high junction temperature and vice versa. And the Pareto-optimal front, which is a trade-off curve between optimization objectives, is obtained by MOEA method. Finally, K-means clustering algorithm is carried out on Pareto-optimal front, and three representative points are proposed to verify the accuracy of the model.

Each design variable on the effect of two objectives and distribution of temperature is researched. The relationship between minimum thermal resistance and pressure drop is provided which can give some fundamental direction for microchannels design in GaN HEMT devices cooling.

The development of information technologies has fueled the emergence of online self-organizing teams that involve members with diverse backgrounds to work on a shared goal voluntarily. However, the differences in members' attributes give rise to diversity. Therefore, the authors’ research is to figure out how diversity affects team performance in the context of online self-organizing teams and how this effect changes over team tenure.

The authors use a dynamic approach to the diversity-team performance relationship and collect a publicly longitudinal dataset on 3,970 collaborative items from 2,550 online self-organizing teams spanning nine years in an open innovation community of an online game.

The empirical results show that culture separation is negatively related to team performance, and this negative relationship weakens as team tenure increases. While skill variety and contribution disparity are positively related to team performance, and these positive relationships strengthen as team tenure increases.

The study provides a research framework to examine the relationship between diversity and team performance and explore how this relationship varies over team tenure in the context of online self-organizing teams. The results not only demonstrate the double-edged role of diversity in affecting the success of online self-organizing teams but also advance the understanding on the temporal effect of diversity on team performance.

The authors analyze the expansion of Big Data and artificial intelligence technologies from the perspective of economic theory. The authors argue that these technologies can be viewed from three perspectives: (1) as an intangible asset; (2) as a search and matching technology; and (3) as a forecasting technology. These points of view shed light on how new technologies are likely to affect matching between firms and consumers, productivity growth, price discrimination, competition, inequality among firms, and inequality among workers.

Academic adjustment is an important indicator which represents the students' academic achievements. The purpose of this investigation is to examine the fundamental role of academic adjustment for the success of student's by considering the influence of several psychological, motivational and behavioral factors that affect the academic adjustment of students in the university which then influences the students' academic achievements.

Data were gathered through self-administered questionnaires from 409 students enrolled in a Business degree program in an academic institution by using a convenience sampling technique. Structural equation modeling (SEM) technique has been applied for analyzing the data and the proposed hypothesis.

Results obtained from partial least square (PLS)-SEM analysis indicated that academic adjustment is affected by psychological, motivational and behavioral factors and in turn influences the outcomes of success. Moreover, the findings also showed that psychological and motivational factors, directly and indirectly via partial mediation of adjustment, and behavioral factors via full mediation of academic adjustment influences the outcomes of success.

The study implies that it is important for university policymakers that they should give great priority to fully exploiting its potential to facilitate student's effective adjustment to academic life. Universities should pay attention to enhancing the academic study skills of students which leads to gains in academic achievement. Furthermore, universities should integrate self-regulated skills and provides motivation to students which is the biggest contributor toward adjustment as well as this study broadens the understanding of psychological capital as a resource that enhances academic adjustment.

Very little attention has been given to examining the role of academic adjustment in the success of students. Therefore, the present study makes two contributions to this research. First, the study broadens the understanding of psychological capital with the potential to strengthen adjustment with academic life in domains, i.e. academic achievement and institutional adjustment. Second, the study identifies which motivational and behavioral factors affect academic adjustment and achievement.

This article presents a theoretical and empirical discussion of the way in which computer technologies (the internet) influence the production of sexuality, sexual fantasies, and specific sexual behaviors. This discussion is based on the case study of an Israeli website for sexual encounters, which its users say has brought out (or enabled) a specific sexuality that would not have emerged were it not for the new technology. This article focuses on a particular population from among the sites users: married men who surf the site to find men with whom to have one-off sexual encounters, and who report a positive experience of “life in the closet.” A total of 34 men were interviewed, 6 face-to-face and 28 in online interviews. The findings include three main accounts: (1) most of the interviewees said that the new technology (the website) enabled them to invent a new existential category, that of “married straight men who sometimes have sexual encounters with other men.” This category is seen as enabling a new sexuality, or a sexuality that would not have been enacted were it not for the internet; (2) the interviewees spoke of how “life in the closet,” and in particular entering and exiting it (which was called a “zigzag sexuality” or the “revolving doors of the closet”), creates an experience of a vital sexuality that fits in with their marriage to a woman and their life as a “straight” man; (3) many interviewees explained how the technology enabled them to keep their sexuality secret, where the secrecy itself was said to create a unique sexual desire. The discussion section shows how the new technology enables individuals to invent a new sexuality, to enact unique sexual fantasies, and to maintain an alternative self, or alternative components of their concept of self.

The purpose of this paper is to identify the mediating effect of fan-page followers’ engagement activities and moderating role of followers’ demographic profile and trust level on their purchase intention.

This study utilised the customer engagement behaviour and consumer involvement theory as a foundation to explore the impact of variables. Structural equation modelling was utilised to test the model with the data collected from 307 Facebook fan pages’ followers of five Malaysian companies.

It was shown that following fan pages will influence fan page engagement, which in turn affects purchase intention and social media connectedness. Further analysis indicated that the impact of “follow” and “engagement” on purchase intention differs between genders, ages, level of trust and income.

The study serves as a basic fundamental guideline for academics and researchers to interpret the concept of following fan pages and engagement actions and its effects on purchase intention and social media connectivity, as well as opening a vast area of unexplored researches on the subject of social media.

The research provides information for business-to-consumer companies in utilising fan page based on user categories.

This study proposes the application of an empirically tested framework to the fan-page follow actions. The authors argue that this framework can provide a useful foundation for future social commerce research. The results would help academics be aware of fan page and its user’s engagement actions, which will provide a new avenue of research.

This paper aims to shed some light on the role of video games within the media industry and IT sector, on its contribution to the production and distribution of digital content in emerging economies. It offers a case study on the role of mobile devices as a factor of transformation and shows how under changing socio–economic conditions, the transformations enabled the creation of digital ecosystems and innovative business models.

The paper is based on desk research, a review of literature and trade press and comments from experts and industry players.

The paper argues that as the internet is going mobile, driven by data – mostly video – the new mobile platforms are becoming the key for the distribution of content and mobile games. Whether it is the history of browser games in China, mobile games in India or PC games in Russia, each national gaming industry has required a unique strategy for making money, building on some prominent cultural factors and adapting to the local economic conditions. The paper reveals that video games are now clearly a vital part of digital content production in these countries, while stressing upon the role of public policies.

The paper relies mostly on industry and consultancy data, as in such a fast-changing environment official data even when accessible are in most cases too old to remain relevant to identify the trends and the fast changing stakes. This calls for some caution about the data. Therefore, the data used should be treated as just signals of potential trends, sufficient to provide an appropriate overview of the evolution of the global mobile ecosystem.

This paper shows that the video games industry can serve as a pivot for the ICT industry. Besides, this prompts upstream and downstream industries of the entire digital entertainment market to thrive.

The paper shows that companies from emerging markets companies have been betting on a combination of factors: the development of the economies, the growth of the mobile market, emerging middle-classes and young customers. It provides a growth model that appears to be close to a “regular” industrial growth model.

Although there is a growing academic literature on the video games industry, few research have been devoted to specific issues of emerging economies and to the role of video games within the media industry and IT sector.