In this article, an optimal control problem subject to a semilinear elliptic equation and mixed control-state constraints is investigated. The problem data depends on certain parameters. Under an assumption of seperation of the active sets and a second-order sufficient optimality condition, Bouliganddifferentiability (B-differentiability) of the solutions with respect to the parameter is establ...

Complexity classes with nite acceptance types are the classes obtained by nonde-terministic machines, if the global acceptance condition is of the form: the number of accepting computation paths is in the set A, for some xed nite set A. We study the relationships between such classes, exhibiting conditions, under which one class is contained in another one relative to all oracles, or conversely...

The radio channel assignment problem can be cast as a graph coloring problem. Vertices correspond to transmitter locations and their labels (colors) to radio channels. The assignment of frequencies to each transmitter (vertex) must avoid interference which depends on the seperation each pair of vertices has. Two levels of interference are assumed in the problem we are concerned. Based on this c...

James C.Y. Guo, PhD, P.E. Professor, Department of Civil Engineering, University of Colorado at Denver, Denver, Colorado 80204. E-mail: [email protected] ___________________________________________________________________________________________ Abstract: A semi-virtual watershed model is presented in this study. This model places the design rainfall distribution on the input layer and t...

This study describes and interprets the evolution of grain-size distribution of sediment yields generated in an experimental soil flume subjected to downstream and upstream moving rain storms. Results of laboratory experiments show that downstream moving storms cause more soil loss than do upstream moving storms. The pattern of sediment grain-size evolution in time during a runoff event exhibit...

Global climate change is expected to cause an increase in the intensity and duration of extreme rainfall events that occur today. The leading flooding various world regions, including flat coastal areas such as Serok River catchment Kota Pontianak, influenced by tides, excessive rainfall. This article presents results analysis impact precipitation on peak discharge flood hydrographs catchment, ...