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The purpose of this paper is to study the film-forming capacity of logarithmic crowned roller for tapered roller bearing (TRB) and to design a tapered roller profile based on an elastohydrodynamic lubrication model.

A coupled model, incorporating a quasi-static model of TRBs and an elastohydrodynamic lubrication model was developed to investigate the load distribution of TRB and to evaluate the lubrication state of tapered roller/raceway contact.

The model is verified with published literature results. Parametric analysis is conducted to investigate the effect of crown drop on azimuthal load distribution of the roller, film thickness and pressure distribution in the contact area. The result shows that crown drop has little influence on the azimuthal load distribution; also, the film thickness and the pressure distribution are asymmetric. When the tapered roller is designed and manufactured, the crown drop of the small end should be larger than that in the large end.

Precise roller profile design is conducive to improve the fatigue life of TRBs. Currently, most crown design methods neglect the influence of lubrication, which can lead to a non-suitable roller profile. Therefore, the present work is undertaken to optimize roller profiles based on lubrication theory.

Although the prior literature has identified the relevance of dealer participation for multinational enterprises (MNEs), it is unclear whether such participation could also be an important means for local dealers to learn from MNEs. By adopting local firms’ viewpoint, our study draws on organizational learning theory to examine how local dealers benefit from their participation with foreign suppliers in Africa.

The empirical setting is a combinative dataset of secondary data and primary survey of 164 small- and medium-sized local dealers with nine subsidiaries of a Chinese motorcycle company in six countries of Sub-Saharan Africa.

This research shows that dealer participation is positively associated with dealer performance, and this positive effect is stronger when local dealers operate in regions with low government corruption and high government support. However, the positive relationship is weaker when local dealers use the local tongue extensively but becomes stronger when their foreign suppliers have a high dealer coverage.

By taking a local-participant perspective, our study extends the participation literature to show how firms from a resource-constrained region may benefit from their proactive participation with foreign counterparts. Additionally, we identify the boundary conditions of institutional factors and strategic choices of local dealers and foreign suppliers, providing a nuanced understanding of firm behaviors in complex and uncertain markets.

A plethora of organizational studies have found employee narcissism to be an unfavorable trait that impedes job functioning. Yet, the elevated confidence and self-assuredness associated with the narcissistic personality can also drive individuals to show initiative behavior. This paper aims to investigate how and when employees with narcissistic personalities can potentially contribute positively to effective functioning.

Data were collected from 91 supervisors and 273 subordinates in a corporate setting in central China. To account for the nesting effects, multilevel path analysis was conducted to test the hypotheses.

Employee narcissism is positively related to psychological ownership, which in turn is positively related to initiative behavior in the workplace. Furthermore, job meaningfulness moderates the indirect effect of employee narcissism on initiative behavior through psychological ownership. Specifically, the indirect effect is more salient when the employee perceives higher, rather than lower, job meaningfulness.

This study examines how employees with narcissistic personalities can show initiative at work. Specifically, this research uncovers the underlying psychological mechanism as well as the boundary condition that facilitate this process. This study affirms the importance of self-determination for narcissistic employees and sheds light on how these employees can potentially contribute positively to effective functioning. Insights for theory, practice and future research are also discussed.

Although there has been much research on government support for export in China and other emerging economies, considerably less attention has been given to government subsidy-related importing activity in China. This study aims to propose that the government subsidies as the source of financial resources produce a significant increase of imports, as the firms are more likely to engage actively in importing technology-related products which are conducive for China’s future innovation. However, state ownership in firms negatively moderates this relationship and holds back technology imports. Improved formal regulatory institutions do not help to improve but rather weaken this relationship.

To investigate how government policy affects imports of strategic resources in China, all of the listed firms on Chinese stock markets (from 2008 to 2014) have been selected, the firms that are engaged in exporting and importing activities. The data from the China Stock Market & Accounting Research database have been selected and merged with those of the General Administration Customs in China. A panel analysis has been done with several robustiness tests.

First, the study indicates that government subsidies are a driving force for the development of importing activities. Second, it finds conflicts of interests between government subsidies and state ownership of a firm, as increased ownership will weaken and even negate the positive effect of a government policy, thus negatively affecting the national competitiveness in the long run. Third, it is important to take into account the issue on different levels of institutional development, even allowing for the fact that a nationwide government policy is applied to the firms located in all corners of the country.

The authors suggested a regional difference in regulatory development but did not find the proposed direction. In their future study, the authors will validate and generalize this intriguing substitutional effect. They expect the results will help the government to ensure that it can fulfill a policy (e.g. regulation) down to every gross-roots organization so the development of regulatory infrastructure will help the firm to obtain and accumulate strategic resources through increased imports of them. Another direction of their future study will explore how government policy will prompt the firms to increase their spending so that they can possess plenty of “stamina” for their future development.

Different levels of institutional development exist in China even allowing for the fact that a nationwide government policy should be applied to all firms within the territory. This certainly has impacts on technology imports and thus creates difficulties for firms located in the western parts of China about which the government is particularly concerned. The government needs to ensure that its policies (laws and regulations) can be fulfilled down to every gross-roots organization so that the development of regulatory infrastructure can be inclusive and pervasive, given its influence on technology importation and indigenization.

Both of the theoretical and empirical work centered on policy initiatives and particularly government subsidies in emerging economies that significantly influence imports of strategic resources, a means with which the firm is better able to maintain and develop its competitive advantages, particularly in an economy with institutional void. Relatedly, the results on a causal relationship help envision a transcending trajectory of China’s economy, suggesting that businesspeople should capitalize on the policy advantage so that they are better able to sustain their long-term development. The results also present implications for policymakers to encourage and support strategic move toward such import endeavors.

The paper aims to achieve translational shaking tests on a 6-DOF hydraulic parallel manipulator. Shaking tests are commonly performed on shaking tables, which are generally used for small motion ranges and are usually financially costly. The research is required to generate shaking motions in three translational directions for a specimen for shaking tests, but it also needs to produce 6-degree of freedom (DOF) motions with large motion ranges.

A hydraulic 6-DOF (degree of freedom) parallel manipulator is applied to achieve this goal. The link-space control is adopted for the manipulator, and PID controller and feed-forward controller are used for each loop of the system. A hybrid reference signal generator is proposed by using a shaking controller, which is developed to convert the shaking motion into position signal. The converted result is directly added to the pose signal. The whole real-time control system is realized by using MATLAB xPC Target.

The developed method is verified on the hydraulic 6-DOF parallel manipulator with specimen. Experiments show very promising results that the proposed technology is really applicable to perform translational shaking tests on the hydraulic parallel manipulator.

A simple yet efficient solution is proposed that allows shaking tests in three translational directions performed on the hydraulic 6-DOF parallel manipulator with wide motion ranges. The paper presents a state-of-the-art related to the applications of parallel robots in several fields of technology.

This paper aims to study largely recent aspects of entrepreneurship and innovation in China. It synthesizes the research in the current special issue (SI) of Multinational Business Review (MBR) on this topic. In addition, this paper differs from other work on this topic in examining entrepreneurship and innovation from a more global standpoint with relevant international effects.

The paper provides an overview of the literature on entrepreneurship, innovation and key related topics such as firm and economic growth, as well as linking this research to related international works. It also summarizes the papers of the SI.

The authors’ analysis suggests that the study of entrepreneurship and innovation should be placed in the context of a country’s economic development and institutional environment as well as the firm internationalization trajectories and business models. In addition, the authors believe that a good understanding of economic growth in a transition economy like China (which is a key goal of China’s recent emphasis on innovation) is facilitated by understanding the comparative advantages and disadvantages of an economy with respect to the global innovation system.

The authors’ study explores the local-global and parent-subsidiary connectivity and co-evolution of firm strategies and the institutional environment in entrepreneurship and innovation in emerging and transition economies. The authors summarize and synthesize the papers in this SI to provide the results as well as some directions for future research in the domain of entrepreneurship, innovation and new venture creation, which is believed to be a key engine of economic growth in the coming years.