A point process is called "self-exciting" if the occurrence of an arrival increases the likelihood that additional arrivals occur soon after.
Many of the additional arrivals will come from new international markets in India, Russia, Israel and China – a major investor in Greece from which Athens hopes to attract about 600,000 holidaymakers annually.
On Friday, 22 Democratic senators sent a letter to the president in which they expressed "serious reservations about these ongoing immigration raids", adding that they were "deeply concerned that in its eagerness to deter additional arrivals from this region, the Department [of Homeland Security] is returning vulnerable individuals with valid protection claims to life-threatening violence".
1 40 p.m.: This article was updated with information about additional arrivals of travelers from countries subject to the earlier ban, and an assessment of the next legal steps.
Table 2 reveals the effect of the additional arrivals.
It added that "each national association receiving delegations must communicate the necessary information delivered by health authorities to ensure the reception of teams... and if necessary to provide additional checks at arrival points".
Hence, the additional benefit of arrival screening is greatest when efficacy of departure screening is relatively low, for example if potentially infected travellers primarily depart regions with limited public health re-sources and arrive in regions where public health resources are more abundant.
Hence, the additional benefit of arrival screening is greatest when efficacy of departure screening is relatively low, for example if potentially infected travellers primarily depart regions with limited public health resources and arrive in regions where public health resources are more abundant.
In November 2014, President Obama expanded the Deferred Action for Childhood Arrivals (DACA) program, providing deportation relief for additional immigrants who arrived in the United States as children.
The arrival of additional U.S. forces signaled renewed resolve.
