The revised universal soil loss equation (RUSLE), the sediment delivery distributed (SEDD) model, and ArcView GIS were used to estimate the impacts of no-till practice on soil erosion and sediment yield in Pataha Creek Watershed, a typical dryland agricultural watershed in southeastern Washington. The results showed that the average cell soil loss decreased from 11.09 to 3.10 t/ha yr for the wh...

_____________________________ Introduction. ___________________________ Scope of work and available information,... Theory of sediment yield and transport__. Fine sediment.______________________ Splash, sheet, and rill erosion____ Environmental factors__ _ _______ Coarse sediment.____________________ Effect of velocity.__---__________ Effect of particle size_____________ Storm characteristics._...

Incremental learning of classi cation rules from data streams with concept drift is considered. We introduce a new algorithm RILL, which induces rules and single instances, uses bottom-up rule generalization based on nearest rules, and performs intensive pruning of the obtained rule set. Its experimental evaluation shows that it achieves better classi cation accuracy and memory usage than the r...

This paper contributes to the theory of substructural logics .that are of interest to categorial grammarians. Combining semantic ideas of Hepple [1990] and Mor-rill [1990], proof-theoretic ideas of Venema [1993b; 1993a] and the theory of equational specifications, a class of resource-preserving logics is defined, for which decidability and completeness theorems are established.

We introduce a new model for rill erosion. We start with a network similar to that in the Discrete Web** and instantiate a dynamics which makes the process highly non-Markovian. The behavior of nodes in the streams is similar to the behavior of Polya urns with time-dependent input. In this paper we use a combination of rigorous arguments and simulation results.

The development of rills on a hillslope whose soil is amended by biochar remains topic to be developed. A theoretical rill flow resistance equation, obtained the integration power velocity distribution, was assessed using available measurements at plot scale with added soil. incorporated and mixed arable content BC 6 12 kg m−2. developed analysis demonstrated that an accurate estimate profile p...

This issue of Sleep Science contains two excellent review articles by Garcia-Rill and his colleagues examining the role of reticular activating system, especially the pedunculopontine (PPT) nucleus, in the pathophysiology of insomnia, schizophrenia, and other neuropsychiatric disorders [1,2]. The PPT nucleus is one of the major aggregations of cholinergic neurons in the mammalian brainstem capa...