We show how the use of a parallel between the ordinary (+,×) and the (max,+) algebras, Maslov measures that exploit this parallel, and more specifically their specialization to probabilities and the corresponding cost measures of Quadrat, offer a completely parallel treatment of stochastic and minimax control of disturbed nonlinear discrete time systems with partial information. This paper is b...

In the process of urbanization, maintaining ecosystem health in ecologically fragile regions is an inevitable requirement for sustainable development future, but ecological status varies greatly at different spatial scales. Determining appropriate scale assessment basis and premise management environmental protection policy making. Taking Dianchi Lake basin as research area, based on vigor-orga...

Mapping and comparing biodiversity in space is a routine task ecological research. However, accurate mapping requires exact distributional information as inputs. When geographical coordinate missing or when only coarse distribution of species available at the quadrat plot level, how can we effectively infer compare spatial patterns with reasonable accuracy while controlling confounding impacts ...

We show how the use of a parallel between the ordinary (+;) and the (max; +) algebras, Maslov measures that exploit this parallel, and more speciically their specialization to probabilities and the corresponding cost measures of Quadrat, ooer a completely parallel treatment of stochastic and minimax control of disturbed nonlinear discrete time systems with partial information. This paper is bas...

Population sizing from still aerial pictures is of wide applicability in ecological and social sciences. The problem is long standing because current automatic detection and counting algorithms are known to fail in most cases, and exhaustive manual counting is tedious, slow, difficult to verify and unfeasible for large populations. An alternative is to multiply population density with some refe...

Spatial patterns of pathogen inoculum in field soils and the resulting patterns of disease may reflect the underlying mechanisms of pathogen dispersal. This knowledge can be used to design more efficient sampling schemes for assessing diseases. Spatial patterns of Verticillium dahliae microsclerotia were characterized in commercial cotton fields through quadrat and point sampling in 1994 and 20...

ABSTRACT Citrus sudden death (CSD), a new disease of unknown etiology that affects sweet orange grafted on Rangpur lime, was visually monitored for 14 months in 41 groves in Brazil. Ordinary runs analysis of CSD-symptomatic trees indicated a departure from randomness of symptomatic trees status among immediately adjacent trees mainly within rows. The binomial index of dispersion (D) and the int...