Computer security researchers cautioned that despite the US-CERT description of the attacks as sophisticated, such threats are frequently undertaken by amateur computer hackers.
The centralization of the different existing institutions became necessary with the growth of cities and was most frequently undertaken by city councils.
Foreign goods were brought into the Aztec homeland by great caravans of professional merchants called pochteca, who frequently undertook journeys exceeding a year in length.
River rehabilitation schemes are attempting to address this; however restoration is frequently undertaken with minimal scientific input and fails to improve biodiversity.
Large, well-known firms with a small degree of information asymmetry and long trading history frequently undertake international trade operations via open-account trade by trusting one another and their trading relationships.
We found that nearly a quarter of all daily mobility in Barcelona is performed with a local trip, and that short trips are more frequently undertaken for personal purposes.
But the bulk of his time, in every season, was devoted to food: in fact, during the forays that Trachi in the vigor of his youth frequently undertook among the barren cliffs and gorges of his native island, he always, following an instinct for prudence, brought along, tucked under his arms, two big bundles of grass or foliage, gathered in times of rest.
Solids recovery from liquid suspension, on the other hand, is a task frequently undertaken by filters, and the wide variety of types of liquid filters is almost entirely because of the problems imposed on filter design by the need to remove these collected solids from the inside of the filter.
In addition, staff from the OPD frequently undertook information rounds in the waiting area telling patients with simple problems to go to the primary care service.
