BALESTRA, PIETRO, AND MARC NERLOVE: .'Pooling Cross Section and Time Series Data in the Estimation of a Dynamic Model: The Demand for Natural Gas." Technical Report No. 8, Institute for Mathematical ...

ALTHOUGH many theoretical calculations of the photo-ionization cross-section of atomic hydrogen have been performed (see review by Bates 1), no experimental determination of this quantity has ...

About this issue Abstract and details This paper introduces the concepts of time-specific weak and strong cross-section dependence, and investigates how these notions are related to the concepts of ...

The 2025 Yellow River Basin Cross-border E-commerce Expo kicked off on Thursday in Qingdao, Shandong province, showcasing over 15,000 products across nine exhibition zones, including cross-border ...