The area of that cross section is the well known A = pi*R² which is colloquially pronounced as “pie are squared.” We will put aside the old joke that “Pie are not squared; pie are round” but we have ...

Cross-sectional analysis looks at data collected at a single point in time, rather than over a period of time. The analysis begins with the establishment of research goals and the definition of ...

Figure 1: Cross-sectional TEM of graphene–hBN heterostructures. In conclusion, our high-resolution images show that new kinds of heterostructures with atomically sharp interfaces can be ...

Cross-section regression with common shocks. Econometrica 73, 1551-85. Bai, J. (2009). Panel data models with interactive fixed effects. Econometrica 77, 1229-79. Baltagi, B. H. and A. Pirotte (2010).