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Previous studies as well as anecdotes have indicated that parental involvement in adult children’s marital conflicts is fairly common in Korea. This study attempts to explain how in-law conflicts – arguably a structural outcome of the traditional Confucian family – lead to marital disruption in contemporary families.

This study adopts the hypotheses of the corporate group, mother identity, and gendered-role expectations, which are instrumental to understanding the social context in which the legacy of the Confucian culture interacts with the knowledge-based neoliberal economy to revive in-law conflicts. Divorced-couple data are from in-depth interviews and court rulings, and their analysis illustrates the trajectories of marital breakdown.

The findings provide support for the hypotheses. Parents, especially mothers, who heavily invested time and money in their children’s education and career building meddle in their marriages in hopes to ensure the best returns to their investment. Normative prescriptions of gendered roles provide references for the parents regarding the roles of their children and children-in-law, and the gaps between their expectations and perceived reality trigger parental meddling and in-law conflicts. Adult children who are indebted to the parents for their status formation may acquiesce to the parental intervention.

In the traditional patriarchal family, in-law conflicts were restricted to mother- and daughter-in-law relationships, but are now extended to mother- and son-in-law relationships, reflecting a paradoxical twist in gender-role expectations. This chapter suggests that heavy parental investment in their children can have an unexpected consequence increasing the probability of adult children’s marital disruption.

This study seeks to investigate the effect of mobile number portability (MNP) on mobile subscribers in Korea by focusing on subscribers' perception and behavior related to MNP.

The study collected data on subscribers who had changed mobile carriers between the beginning of MNP (July 2003) and December 2005. The data were analyzed by statistical analyses such as ANOVA and logistic regression.

Statistical analyses in this study reveal that subscribers perceive the switching barrier still as high, discouraging subscribers from switching carriers. While MNP lowered switching costs considerably, a significant level of switching costs still remains despite MNP. Carriers develop new subscriber lock‐in strategies that make them stay with current carriers. In addition, there are hidden costs other than MNP that should burden subscribers with number portaling.

The findings imply that the MNP has directly affected the industries to a greater extent than subscribers, which suggests implications for both regulators and industries: how to effectively enforce MNP to achieve the intended goals and how to achieve competitive advantage with MNP.

This research is particularly interested in investigating the effect of the introduction of MNP on subscribers' behaviors and perceptions, and therefore their motivations for changing or remaining with mobile carriers (operators) with the introduction of MNP. Although there have been many studies looking at the effect of number portability on competition at the industry level, little attention has been shown on the individual level such as subscribers' behavior or perception.

The aims of the paper are to improve the dynamic response of an induction motor based position servo system and to remove the chattering problem in the sliding mode control theory by using fuzzy logic principles. The obtained results are also compared with conventional sliding mode controller to show its performance.

The main method used for the research is to form a thin boundary layer neighboring the switching surface by using fuzzy logic. The sliding mode control law is inherently discontinuous naturally. Therefore, there are some difficulties such as so many switches occurring between the control bounds, which cannot be carried out by real controllers. Therefore, fuzzy logic is used in the thin boundary layer to determine the control signal current. Thus, the chattering is eliminated.

The results show that the designed controller has superior performance. But, there are also some difficulties. It is difficult to obtain fuzzy rules. The rules can be obtained by using genetic algorithms without expert's knowledge. However, sliding surface slope C can be optimized to increase system's dynamic performance.

A new boundary layer consisting of the fuzzy rules in the sliding mode control is formed.

Servant leadership is primarily focused on the empowerment and moral development of followers (Burton et al., 2017). Within sports research, little is known about how servant leadership interacts with organizational culture in teams. Thus, the purpose of this study is to assess the servant leadership of one head baseball coach and examine the degree to which servant leadership affects the program's culture.

Data were collected for this case study of an NCAA Division III head baseball coach throughout one academic year. Sources included 12 interviews (ranging from four minutes to 92 min), observation of practices and games, textual analysis of documents and websites, as well as the coach's reflection journal. Data were analyzed using a six-phase process of thematic analysis (Braun and Clarke, 2006).

The participant exhibited the following servant leadership behaviors: empowering, helping subordinates grow and succeed, behaving ethically, and conceptual skills (Liden et al., 2015, 2008). In addition, the program maintained a culture featuring a few distinct artifacts, very clear espoused values, and three deeply held basic assumptions. The findings suggest that the head coach used servant leadership not to create or change culture but instead to amplify the existing culture of the baseball program.

There is strong evidence of a link between servant leadership and team culture, which is context-bound. At the Division III level, servant leadership behaviors can be used to embody a program's culture. Furthermore, through this embodiment, servant leaders can perpetuate an effective, functioning team culture, particularly within intercollegiate athletics.

The purposes of the study were (1) to examine whether directional dominance between co-existing athlete brands and sponsor brands exists; (2) to explore whether directional dominance influences consumers' memory interference; and (3) to test whether brand interference interacts with directional dominance among brands to influence consumer evaluation and behaviors under multiple endorsement and sponsorship portfolios.

The research is a 3 (directional dominance: symmetric dominance vs. asymmetric dominance with existing vs. asymmetric dominance with newly endorsed brand) x 2 (brand memory interference: interference vs. no interference) between-subjects factorial design.

The results indicate that (1) directional dominance influenced consumer brand interference, and directional dominance interacted with brand interference on (2) brand evaluation and (3) purchase intention in multiple brand portfolios.

Considering that conventional single-sponsor sponsorship or single-endorser endorsement portfolios are increasingly rare, research on concurrent circumstances of multiple endorsers and multiple endorsed brands in multiple brand portfolios was necessary. By expanding and reconceptualizing the context of brand networks, this study provides empirical evidence on how the dominance and directionality between endorser and (existing and newly) endorsed brands—an athlete endorser's strong pre-existing association with an existing endorsed brand in particular—influenced consumer brand interference and the brand evaluation in multiple brand portfolios.

This study examines the effects of congruence and reliability on cause-brand alliance (CBA) program attitudes—exploring how CBA program attitudes and sport entity attitudes affect attitudes toward a sport-related and sport-unrelated brand in a single CBA.

About 240 survey participants answered questions before and after being exposed to information about the NFL Play 60 program. Consistent partial least squares structural equation modeling is utilized to test the hypotheses.

Results suggest both congruence and reliability positively influence CBA program success; and both sport-related and sport-unrelated brands positively affect consumer attitudes when they participate in a CBA with a high-profile sport entity. This occurs directly through CBA program attitudes for a sport-unrelated brand and indirectly through sport entity attitudes for a sport-related brand.

This study extends the CBA literature in sports by showing (1) the role of reliability on CBA program attitudes, (2) the role of sport entity attitudes on other cause partner attitudes and (3) different paths for sport-related versus sport-unrelated brands that are partnered with a premium sport entity to achieve CBA program brand enhancements.

This study identifies the outcomes prioritised by the sponsors of a sport, specifically football. The authors’ novel thesis is that the network collaboration between sponsors as well as with the sponsorship object (i.e. the football club) is a significant determinant of sponsor satisfaction and the likelihood of renewing the sponsorship deal. This perspective has not been adequately addressed in existing sponsorship research.

The authors use an original dataset to empirically analyse networks and their business value for football sponsors. Our data covers sponsors of the Norwegian football club Rosenborg Ballklub (RBK) from 2011 to 2018, which we analyse using regression models.

The results indicate that network effects are extremely important for sponsors in the RBK network. The authors’ analyses also indicate that network effects are more important than exposure.

When planning, sponsors must analyse their motives for being a sponsor and assess how well their network functions by exploring its cohesiveness and scope. It is also very important that the sponsorship object be aware of the value of the network and enable interaction between the sponsors.

This study confirms that functioning networks contribute to the satisfaction and renewal of sponsorships and can attract a growing number of sponsors for sports clubs, thus serving as an important source of income.

This study aims to model the nanofluid flow in microchannel heat sinks having the same length and hydraulic diameter but different cross-sections (circular, trapezoidal and square).

The nanofluid is graphene nanoplatelets-silver/water, and the heat transfer in laminar flow was investigated. The range of coolant Reynolds number in this investigation was 200 ≤ Re ≤ 1000, and the concentrations of nano-sheets were from 0 to 0.1 vol. %.

Results show that higher temperature leads to smaller Nusselt number, pressure drop and pumping power, and increasing solid nano-sheet volume fraction results in an expected increase in heat transfer. However, the influence of temperature on the friction factor is insignificant. In addition, by increasing the Reynolds number, the values of pressure drop, pumping power and Nusselt number augments, but friction factor diminishes.

Data extracted from a recent experimental work were used to obtain thermo-physical properties of nanofluids.

The effects of temperature, microchannel cross-section shape, the volume concentration of nanoparticles and Reynolds number on thermal and hydraulics behavior of the nanofluid were investigated. Results are presented in terms of velocity, Nusselt number, pressure drop, friction loss and pumping power in various conditions. Validation of the model against previous papers showed satisfactory agreement.

Impinging jets have been widely studied, and the addition of swirl has been found to be beneficial to heat transfer. As there is no literature on Reynolds-averaged Navier Stokes equations (RANS) nor experimental data of swirling jet flows generated by a rotating pipe, the purpose of this study is to fill such gap by providing results on the performance of this type of design.

As the flow has a different behaviour at different parts of the design, the same turbulent model cannot be used for the full domain. To overcome this complexity, the simulation is split into two coupled stages. This is an alternative to use the costly Reynold stress model (RSM) for the rotating pipe simulation and the SST k-ω model for the impingement.

The addition of swirl by means of a rotating pipe with a swirl intensity ranging from 0 up to 0.5 affects the velocity profiles, but has no remarkable effect on the spreading angle. The heat transfer is increased with respect to a non-swirling flow only at short nozzle-to-plate distances H/D < 6, where H is the distance and D is the diameter of the pipe. For the impinging zone, the highest average heat transfer is achieved at H/D = 5 with swirl intensity S = 0.5. This is the highest swirl studied in this work.

High-fidelity simulations or experimental analysis may provide reliable data for higher swirl intensities, which are not covered in this work.

This two-step approach and the data provided is of interest to other related investigations (e.g. using arrays of jets or other surfaces than flat plates).

This paper is the first of its kind RANS simulation of the heat transfer from a flat plate to a swirling impinging jet flow issuing from a rotating pipe. An extensive study of these computational fluid dynamics (CFD) simulations has been carried out with the emphasis of splitting the large domain into two parts to facilitate the use of different turbulent models and periodic boundary conditions for the flow confined in the pipe.