derivation and optimization of a new antarctic sea ice record
It looks like there was a strong northern polar auroral ring that was instigated at the time. That tells me that Mars did have a uniform magnetic field prior to this event, strong enough to direct a significant portion of the incoming stream into the northern region and deflect/distribute the incoming stream somewhat. We see polar rings on Saturn, Jupiter, Venus and even Earth..
He was an imperial guard, which was later promoted to rank of Iegatus. With this kind of honours in his belt, Saint George was no joke. Yet thanks to Diocletian, every Christian soldier is now required to make a sacrifice to the Roman gods. In this paper we consider epidemic models of directly transmissible SIR (susceptible infective recovered) and SEIR (with an additional latent class) infections in fully susceptible populations with a social structure, consisting either of households or of households and workplaces. We review most reproduction numbers defined in the literature for these models, including the basic reproduction number R0 introduced in the companion paper of this, for which we provide a simpler, more elegant derivation. Extending previous work, we provide a complete overview of the inequalities among these reproduction numbers and resolve some open questions.
However, the US Department of Education reports that teacher preparation programs, both traditional and those that offer alternative certificate pathways, are producing enough teachers to meet the demand across the nation. It is estimated that this will continue for a number of years. This means that an increase in demand for teachers in one state does not mean that teachers elsewhere will be willing to move across state lines..
“The notice letter cited six provisions of the Trinity County Sheriff’s Office Policy Manual and explained that Mr. Potts was being investigated for possible violations of these provisions. Mr. The interaction between oscillating grid turbulence and a solid, impermeable boundary (positioned below, and aligned parallel to, the grid) is studied experimentally. Instantaneous velocity measurements, obtained using two dimensional particle imaging velocimetry in the vertical plane through the centre of the (horizontal) grid, are used to study the effect of the boundary on the root mean square velocity components, the vertical flux of turbulent kinetic energy (TKE) and the terms in the Reynolds stress transport equation. Identified as a critical aspect of the interaction is the blocking of a vertical flux of TKE across the boundary affected region.