4,785 research outputs found
How to Win the Olympic Games – The Empirics of Key Success Factors of Olympic Bids
This paper examines the probability of the success of city bid campaigns on the basis of the quantified factors of a total of 43 bids for the Summer Olympic Games between 1992 and 2012. By using a model with the distance of the sporting venues to the Olympic Village, the local temperatures and unemployment rates, we can correctly predict the decision in 97 % of failed bids and in 60 % of successful bids.Olympic Games, Bidding process, Key success factors, Binary logistical regression
On the Olson and the Strong Davenport constants
A subset of a finite abelian group, written additively, is called
zero-sumfree if the sum of the elements of each non-empty subset of is
non-zero. We investigate the maximal cardinality of zero-sumfree sets, i.e.,
the (small) Olson constant. We determine the maximal cardinality of such sets
for several new types of groups; in particular, -groups with large rank
relative to the exponent, including all groups with exponent at most five.
These results are derived as consequences of more general results, establishing
new lower bounds for the cardinality of zero-sumfree sets for various types of
groups. The quality of these bounds is explored via the treatment, which is
computer-aided, of selected explicit examples. Moreover, we investigate a
closely related notion, namely the maximal cardinality of minimal zero-sum
sets, i.e., the Strong Davenport constant. In particular, we determine its
value for elementary -groups of rank at most , paralleling and building
on recent results on this problem for the Olson constant
- …