Purpose This study aims to analyze the ways in which chief executive officers (CEOs) communicate via Twitter and help develop guidelines for effective tweeting strategies that can leverage Twitter in leadership communication. Design/methodology/approach The authors conduct a large-scale content analysis of more than 65,000 tweets by 338 CEOs. Findings The authors propose a model that categorizes differences in CEO tweets along six independent dimensions: content professionalism, language professionalism, emotional valence, emotion activation, interactional efforts and information cues. The authors also develop coding schemes and measurement scales for each dimension. Originality/value This study provides a multi-dimensional paradigm as well as useful tools for future research on corporate leadership communication on social media.

Compare with preterm formula, donor human milk (DM) is associated with a lower risk of mortality and morbidity in preterm infants. It is thus deemed superior to preterm formula as the sole diet or supplement to own mother's milk (OMM) for preterm infants, especially for those with very low birthweight (VLBW). This historic cohort study investigated the relationship between DM availability, and enteral feeding, body growth of VLBW infants by comparing two cohorts before and after the establishment of a human milk bank. A sub-analysis was also conducted between small-for-gestational-age (SGA) and non-SGA infants in our cohorts. Our results showed that DM availability was associated with earlier initiation and faster advancement of enteral feeding, earlier attainment of full enteral feeding, and a higher proportion of OMM in enteral feeding. DM availability was also associated with earlier regain of birthweight, but not with better body growth. SGA and non-SGA infants responded differently to DM availability with only the non-SGA group showing improved enteral feeding associated with DM availability. The poor growth of VLBW infants with fortified DM warrants further investigations on better fortification strategies to further improve body growth. Studies are also needed on long-term effects of DM feeding on the development of VLBW infants.

The proposal of Rural Revitalization Strategy points out the direction of strengthening rural governance in the new era, but rural governance still faces problems such as the participation of the masses in rural governance is not active and the foundation of mass autonomy is not reliable. Public space has existed in the rural land for a long time, and has experienced many changes since modern times, and now it is showing a trend of decline and atrophy. The functions of rural public space, such as helping rural order construction, promoting rural multiple order dialogue, and solving the "free riding" problem, make it a powerful role in optimizing rural governance and promoting the realization of mass autonomy. In order to reconstruct the public space, we should pay attention to the construction and maintenance of existing resources, and encourage non-governmental organizations to participate in the construction and play the role of new technology like social media.

Background: Antibiotics are widely prescribed by obstetricians, which exposes a large number of infants to antenatal antibiotics (AAB). The effect of AAB on various aspects of neonatal development of preterm infants remains unclear.Methods: In this retrospective study, infants born with gestational age (GA) between 22 +0 and 36 +6 weeks at our unit from 2017 to 2019 were included. Multivariable analysis was adopted to examine the associations between AAB exposure and various outcomes related to enteral feeding process, body growth, and neonatal infection after adjusting for potential confounders. Further subanalysis on the exposure level of AAB and stratified analysis by GA (<34 vs. ≥34 weeks) were also conducted.Results: In this cohort comprising 2,543 preterm infants, AAB was associated with decreased risks of feeding intolerance (odds ratio [OR]: 0.63, 95% confidence interval [CI]: 0.48–0.82) and neonatal infection (OR: 0.63, 95% CI: 0.41–0.94). Higher AAB exposure level was associated with higher Z scores of birth weight (β = 0.37, 95% CI: 0.27–0.47), but lower Δbodyweight Z-scores (β = −0.20, 95% CI: −0.27 to −0.13). AAB was positively associated with the parameters related to body growth in infants with GA <34 weeks but negatively associated in those with GA ≥34 weeks.Conclusions: AAB exposure affects the enteral feeding process and neonatal infection. The effects on body growth vary by the exposure level of AAB and GA of infants. A well-designed prospective and preferably multi-centre study with predefined parameters is required to confirm our findings.