Abstract: An example system includes: identifying campaigns for content distribution for which conversion information has been collected over time and stored in a database in computer storage, where the identified campaigns have at least one subject in common; for each of at least some of the campaigns, performing operations that include: identifying distribution clusters associated with the campaign, and determining relative conversion rates for the distribution clusters; and using relative conversion rates for distribution clusters, which have one or more features in common and are in different campaigns, in determining how to allocate resources for the content distribution.

Abstract: An example budget allocation process may include: determining how to allocate a budget among different content distribution mechanisms, and generating a graphical user interface showing allocations of the budget among the different content distribution mechanisms, where the graphical user interface includes elements to vary the allocations, and where the elements are movable to trigger variations in the allocations. The example process may also include: receiving an input from the graphical user interface; determining a reallocation of the budget among the different content distribution mechanisms based on the input; and updating the graphical user interface using the reallocation of the budget among the different content distribution mechanisms. The graphical user interface may be updated so that at least some of the elements and information relating to the content distribution mechanisms reflect the reallocation of the budget.

Abstract: In a process in which a C.sub.5 -C.sub.12 feedstock has been distilled from a cracked petroleum fraction and polymerized with the help of a Friedel-Crafts catalyst to produce a petroleum resin, the C.sub.5 -C.sub.12 feedstock is first dried to a moisture content of less than about 10 ppm water and then contacted with anhydrous hydrogen halide, usually HCl, prior to polymerization.

Abstract: The esterification of neo acids catalyzed by the presence of a macro-reticular structured sulfonic acid cation exchange resin proceeds under mild conditions with a wide variety of alcohols to give readily recoverable esters in high yields and high purity and an easily recoverable and reusable catalyst.