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The relationship between perceived insider status (PIS) and innovative behavior may be mediated by felt obligation. Then the relationship between felt obligation and innovative behavior may be moderated by job stress. At last, felt obligation may conditional mediate the relationship between PIS and innovative behavior when job stress at different level. The purpose of this paper is to test these hypotheses.

The authors tested the moderated mediation model with data from a sample of 529 supervisor-subordinate dyads from the People’s Republic of China. Employees were asked to evaluate their PIS, felt obligation, and job stress when in the workplace. Their innovative behavior was evaluated by their immediate supervisors.

Results suggest that PIS is positively related to employee’s innovative behavior, and felt obligation mediates this relationship. In addition, job stress moderates two stage relationships: one is to moderate the relationship between felt obligation and innovative behavior; the other is to moderate the whole mediation model.

In China, managers can treat some employees as family members and support them when they are in trouble so that the employees will perceive insider status. Let employees get the feeling of PIS maybe a good way to motivate them to contribute to the organization. In addition, managers should reduce the work load of some employees who are expected to be innovative. Then those employees will have much more spare time to engage in innovative behavior.

This research sheds light on the relationship between PIS and innovative behavior in a non-western context by testing the mediating mechanism guided by role identity and appropriateness framework, which is a way different from social exchange process.

To improve the load capacity and stability of gas foil journal bearings (GFJB), this paper aims to propose a novel GFJB with taper-grooved top foil.

A modified bump stiffness model is established considering rounding and friction. By considering the variation of clearance in the circumferential and axial direction, the static and dynamic characteristics of the novel bearing are calculated using the finite difference method, and perturbation method, respectively. The bearing performance under different groove parameters is studied and compared to the traditional bearings.

The results show that this novel GFJB can bring multi-extra local dynamic pressure and decrease the gas end leakage, which improves the static and dynamic properties. Moreover, as the increment of groove depth, the load capacity and direct stiffness are reinforced. There is an optimal groove width to maximize the load capacity, and the taper-groove is more beneficial to the improvement of bearing performance than other groove shapes. For the novel GFJB (Ng = 6, Hg = 10µm), the load capacity and direct stiffness increase by about 6.67 and 13.5 per cent, respectively. The stability threshold speed (STS) of a rotor supported by the novel bearings is also increased.

The performance of the presented novel GFJB is enhanced immensely compared to the traditional bearings, and the results are expected to be helpful to bearing designers, researchers and academicians concerned.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2019-0307.