Lagged Maximum Covariance Analysis (LMCA) is used to examine the intraseasonal variability of zonal wind, sea surface temperature (SST) and outgoing longwave radiation (OLR) in the Eastern Tropical Paci c Ocean during Northern Hemisphere summertime. Results show the eastward propagation of the Madden Julian Oscillation (MJO) signal at both 850 mb and 200 mb. The 850 mb zonal wind shows a jet-li...

This work introduces a link-based covariance measure between the nodes of a weighted, directed, graph where a cost is associated to each arc. To this end, a probability distribution on the (usually infinite) set of paths through the network is defined by minimizing the sum of the expected costs between all pairs of nodes while fixing the total relative entropy spread in the network. This result...

In classical mechanics, Galilean covariance and the principle of relativity are completely equivalent and hold for all possible dynamical processes. In contrast, in relativistic physics the situation is much more complex. It will be shown that Lorentz covariance and the principle of relativity are not completely equivalent. The reason is that the principle of relativity actually only holds for ...

We show that when a meaningful proportion of firms in an economy engage in tax avoidance strategies, the covariance between a firm’s cash flow and the market cash flows increases, thereby increasing a firm’s cost of capital. This negative externality is imposed on all firms in the economy, not just tax-avoiding firms. The negative externality results regardless of the level of uncertainty assoc...