Search

Abstract: The Abelian Sandpile Model is a cellular automaton whose discrete dynamics reaches an out-of-equilibrium steady state resembling avalanches in piles of sand. The fundamental moves defining the dynamics are encoded by the toppling rules. The transition monoid corresponding to this dynamics in the set of stable configurations is abelian, a property which seems at the basis of our understanding of the model. By including also antitoppling rules, we introduce and investigate a larger monoid, which is not abelian anymore. We prove a number of algebraic properties of this monoid, and describe their practical implications on the emerging structures of the model.

The Abelian Sandpile Model is a cellular automaton whose discrete dynamics reaches an out-of-equilibrium steady state resembling avalanches in piles of sand. The fundamental moves defining the dynamics are encoded by the toppling rules. The transition monoid corresponding to this dynamics in the set of stable configurations is abelian, a property which seems at the basis of our understanding of the model. By including also antitoppling rules, we introduce and investigate a larger monoid, which is not abelian anymore. We prove a number of algebraic properties of this monoid, and describe their practical implications on the emerging structures of the model.

Objective: To describe the oral health status and treatment needs of a sample of elderly people residing in nursing homes in Northern Italy. Research design: a sample of 595 elderly residents (mean age 83.2±9.2 yrs), with adequate cognitive skills were examined by six calibrated dentists. Results: The sample (82% women) was divided into two groups: edentulous (43%) and dentate. In the edentulous group 58% wore dentures in both jaws, 8% in only one jaw and 34% had no dentures. The main problems were dirty or loose dentures and poor oral hygiene. In the dentate group the mean number of teeth was 8.4±7.4, 53% wore dentures (removable, fixed or a combination). Poor oral hygiene was found in 86%, root caries in 51% and coronal caries in 46%. Their main needs were professional cleaning (72%), oral hygiene instructions (62%) and tooth/root extractions (56%). While normative needs were noted for 82% of the whole sample, oral treatment needs were accurately perceived by only 20% of residents, poorly by 24%, while 46% indicated that they had no oral treatment needs. [ABSTRACT FROM AUTHOR]

Objective: To describe the oral health status and treatment needs of a sample of elderly people residing in nursing homes in Northern Italy. Research design: a sample of 595 elderly residents (mean age 83.2±9.2 yrs), with adequate cognitive skills were examined by six calibrated dentists. Results: The sample (82% women) was divided into two groups: edentulous (43%) and dentate In the edentulous group 58% wore dentures in both jaws, 8% in only one jaw and 34% had no dentures. The main problems were dirty or loose dentures and poor oral hygiene: In the dentate group the mean number of teeth was 8.4±7.4, 53% wore dentures (removable. fixed or a combination), Poor oral hygiene was found in 86%, root caries in 51% and coronal caries in 46%. Their main needs were professional cleaning (72%). oral hygiene instructions (62%) and tooth/root extractions (56%). While normative needs were noted for 82% of the whole sample, oral treatment needs were accurately perceived by only 20% of residents, poorly by 24%, while 46% indicated that they had Do oral treatment needs. [ABSTRACT FROM AUTHOR]

To verify the experience of the GOIM in the treatment of advanced colorectal cancer patients with the FOLFIRI combination therapy.