Suchergebnisse

Taking charge has been promoted as an effective proactive behavior for improving work efficiency in organizations. Building on the proactive motivation model and human capital theory, our primary purpose in this study was to investigate how and when idiosyncratic deals (i-deals) promote
recipients' taking charge. We collected data from 237 employees and found that receiving i-deals had a positive effect on recipients' taking charge, psychological empowerment mediated the relationship between i-deals and taking charge, and organizational tenure moderated the mediation effect,
which became stronger as tenure increased. Theoretical contributions and practical implications of our findings are discussed.

The Woda area in the upper Jinsha River has steep terrain and broken structures, causing landslide disasters frequently. Here, we used the distributed scatterer interferometric SAR (DS-InSAR) method to monitor and analyze the Woda landslide area. With the DS-InSAR method, we derived the deformation of the Woda landslide area from 106 Sentinel-1A ascending images acquired between 5 November 2014 and 4 September 2019 and 102 Sentinel-1A descending images acquired between 31 October 2014 and 11 September 2019. The obvious advantage of the DS-InSAR method compared to the persistent scatterer (PS) InSAR (PS-InSAR) method is that the densities of the monitoring points were increased by 25.1% and 22.9% in the ascending and descending images, respectively. The two-dimensional deformation of the landslide area shows that the maximum surface deformation rate in the normal direction was −80 mm/yr, and in the east–west direction, 118 mm/yr. According to the rescaled range (R/S) analysis, the Hurst index values of the deformation trends were all greater than 0.5, which means the deformation trend will continue for some time. In addition, we analyzed the influencing factors and the deformation mechanism of the Woda landslide area and found that the surface deformation is closely related to the geological structure and precipitation, among which precipitation is the main factor triggering the deformation. Our monitoring results will help the local government to conduct regular inspections and strengthen landslide disaster prevention in low-coherence mountainous areas.

Based on upper echelons theory, this study focuses on chief executive officers' (CEOs) regulatory focus and delineates how CEO promotion and prevention focus differentially affect the magnitude of strategic change undertaken by a firm. Applying the person–situation interaction perspective, this study also theorizes how these relationships are moderated by the firm's prior performance and environmental dynamism. These hypothesized relationships are then empirically tested using a sample of 1,318 observations covering a 10-year period. The analytical results support the hypotheses. This study concludes with a discussion of its theoretical and practical implications.