Showing papers by "David V. Day published in 2020"
TL;DR: A high energy resolution x-ray spectrometer for the tender x-rays regime (1.6-5.0 keV) that was designed and operated at Stanford Synchrotron Radiation Lightsource is presented and performance is discussed.
Abstract: We present a high energy resolution x-ray spectrometer for the tender x-ray regime (1.6–5.0 keV) that was designed and operated at Stanford Synchrotron Radiation Lightsource. The instrument is developed on a Rowland geometry (500 mm of radius) using cylindrically bent Johansson analyzers and a position sensitive detector. By placing the sample inside the Rowland circle, the spectrometer operates in an energy-dispersive mode with a subnatural line-width energy resolution (∼0.32 eV at 2400 eV), even when an extended incident x-ray beam is used across a wide range of diffraction angles (∼30° to 65°). The spectrometer is enclosed in a vacuum chamber, and a sample chamber with independent ambient conditions is introduced to enable a versatile and fast-access sample environment (e.g., solid/gas/liquid samples, in situ cells, and radioactive materials). The design, capabilities, and performance are presented and discussed.
25 citations
TL;DR: It is found that leader identity relates to the development of certain – but not all – leadership competency and the importance of developing leadership competencies is demonstrated by linking them to career advancement (i.e., job promotion).
Abstract: We propose that distinct leadership competencies differ in their development over time. Extending the integrative model of leader development (Day et al., 2009), we further propose that leader identity will form complex relationships with leadership competencies over time. To test these propositions, we use longitudinal data (i.e., 5 months, four measurement points) of the 80 in total high-potential executives in a corporate leadership development program. We find a significant difference in the initial levels and the changes of eight distinct leadership competencies. We also find that leader identity relates to the development of certain - but not all - leadership competencies. Finally, we demonstrate the importance of developing leadership competencies by linking them to career advancement (i.e., job promotion). These findings are discussed in light of their theoretical and practical implications.
18 citations
TL;DR: Interest relates to an individual's psychological arousal toward a topic, which is thought to motivate effort allocation and attention as mentioned in this paper. But interest in leadership has been identified as a potential an...
Abstract: Interest pertains to an individual’s psychological arousal toward a topic, which is thought to motivate effort allocation and attention. Interest in leadership has been identified as a potential an...
5 citations