Panel data subject to heterogeneity in both cross-sectional and time-serial directions are commonly encountered across social and scientific fields. To address this problem, we propose a class of time-varying panel data models with individual-specific regression coefficients and interactive...

Digestate is the anaerobic digestion by-product from biogas plants that can be used as a phosphorus (P) fertilizer. In this study, FTIR-photoacoustic spectroscopy (FTIR-PAS) combined with multivariate analysis was applied to predict water-extractable P (WEP) in 45 digestate samples and...

In this study, AlSiMgMnCu alloys with different Cu and Mg contents were processed by the high pressure die casting (HPDC) technics. The phase formation and their microstructure evolution are quantitatively studied by serial block-face scanning electron microscopy (SBFSEM) at nano-scale in...

While South Asia has gone a long way in diversifying their economies, there is substantial scope to do more. Some countries – India, Nepal, and Sri Lanka – can build on their existing production capabilities; others – Bangladesh, Bhutan, and the Maldives – would need to undertake a more...

While South Asia has gone a long way in diversifying their economies, there is substantial scope to do more. Some countries – India, Nepal, and Sri Lanka – can build on their existing production capabilities; others – Bangladesh, Bhutan, and the Maldives – would need to undertake a more...

In this paper, we study a nonlinear panel data model with time-varying regression coefficients associated with an additive factor structure. In our model, factor loadings are unknown functions of observable variables which can capture time-varying and heterogeneous covariate information. A...