This paper describes the development of a higher-order panel method based on B-splines, and its application to problems involving linear and nonlinear wave interactions with floating or submerged ...

Most probability-based political and social surveys of the general public in the United States continue to be conducted by telephone. In most of these surveys, respondents are interviewed only once.

Panel data analysis combines observations on multiple entities—such as individuals, firms or countries—over time. This longitudinal perspective permits the disentanglement of time-invariant traits ...