scholarly journals SCHEDULING THE BRAZILIAN FOOTBALL LEAGUE MINIMIZING EXTENDED CARRY-OVER EFFECTS ASSOCIATED TO STRENGTH GROUPS

Engevista ◽  
2014 ◽  
Vol 16 (1) ◽  
pp. 102
Author(s):  
Marcos Costa Roboredo ◽  
Luiz Aizemberg ◽  
Artur Alves Pessoa ◽  
João Carlos C. B. Soares de Mello

The Brazilian football league is a classical mirrored double round robin tournament with an even number of teams and place constraints. That league is composed of divisions (series) where the two strongest are A and B, in this order. Currently, the Serie A top four teams and the Brazilian Cup winner guarantee together the access to the important Libertadores Cup while the Serie B top four teams guarantee the access to Serie A. We consider a type of carry-over effect that occurs in the schedule when a team meets two teams from either a strong or a weak group in two consecutive rounds. A break occurs when a team plays at home (away) in two consecutive rounds. In this paper, we consider a scheduling problem that limits the number of breaks and minimizes the total number of the effects. We show that previously proposed techniques can be extended to solve this variation. In addition, we use a hypothesis test to provide an evidence that teams from Serie B in last season with access to Serie A at current season form a weak group while teams with access to Libertadores Cup and playing Serie A at the current season form a strong group.

2019 ◽  
Vol 34 (4) ◽  
pp. 455-459
Author(s):  
Ryota HIYOSHI ◽  
Kazunobu FUKUHARA ◽  
Takahiro HIGUCHI

Diabetologia ◽  
1994 ◽  
Vol 37 (9) ◽  
pp. 855-862 ◽  
Author(s):  
S. Pampfer ◽  
Y. D. Wuu ◽  
I. Vanderheyden ◽  
R. De Hertogh

2008 ◽  
Vol 8 (12) ◽  
pp. 1622-1625 ◽  
Author(s):  
Giorgio Ciprandi ◽  
Maria Pia Sormani ◽  
Gilberto Filaci ◽  
Daniela Fenoglio

1953 ◽  
Vol 32 (5) ◽  
pp. 754-762 ◽  
Author(s):  
S.J. Slinger ◽  
W.F. Pepper ◽  
A.M. Morphet ◽  
E.V. Evans
Keyword(s):  

PEDIATRICS ◽  
1983 ◽  
Vol 71 (4) ◽  
pp. 524-530
Author(s):  
Thomas E. Liston ◽  
Col William S. Foshee ◽  
Maj Wayne D. Pierson

Sulfisoxazole, 75 mg/kg/d in two divided doses for 3 months, was administered in a double-blind placebo crossover study to 35 children aged 6 months to 5 years who had frequent recurring episodes of otitis media. There was a 40% reduction in the rate of otitis media among patients receiving sulfisoxazole compared with those receiving placebo (0.25 v 0.42 episode per patient-month) which did not depend on age, sex, season, or several other factors. Using a randomized order, among patients who received placebo first, there was a 64% reduction on sulfisoxazole therapy compared with placebo (0.20 v 0.56 episode per patient-month). In this subgroup, there was significant improvement in eustachian tube function according to serial tympanograms. In the patients who received sulfisoxazole first, the rate of acute otitis remained low on placebo (0.28 v 0.30 episode per patient-month), and tympanogram patterns continued to improve after discontinuation of the active drug. These differences suggest a carry-over effect from the benefits of chemoprophylaxis. There was no significant difference in the species or sensitivity patterns of bacteria isolated from patients receiving sulfisoxazole or placebo. Sulfisoxazole chemoprophylaxis appears to be safe and effective in significantly reducing episodes of otitis media and improving tympanogram patterns.


Mathematics ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 1179
Author(s):  
Miltiadis S. Chalikias

The optimal cross-over experimental designs are derived in experiments with two treatments, four periods, and an experimental unit. The results are given for the values n = 0mod4, 1mod4, 2mod4 and 3mod4. The criterion being the minimization of the variance of the estimated carry over effect.


2001 ◽  
Author(s):  
Anna K. Chernakova ◽  
Alan J. Fan
Keyword(s):  

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