estimation of river sediment load is one of the most important issues in design of hydraulic structures, investigating water quality, conserving fish habitat, estimating erosion and determining watershed management effects. there are two methods for estimating sediment load: empirical and hydrological methods. existence of numerous empirical methods for estimation of river sediment load and a w...

Consider a (robotic) explorer starting an exploration of an unknown terrain from its base station. As the explorer has only limited communication radius, it is necessary to maintain a line of robotic relay stations following the explorer, so that consecutive stations are within the communication radius of each other. This line has to start in the base station and to end at the explorer. In the ...

Niamey, the capital of Niger, is particularly prone to floods, since it on banks Niger River, which in its middle basin has two flood peaks: one summer (the red flood) and winter black flood). In 2020, River Niamey reached all-time highest levels following an abundant rainy season. On other hand, floods have been frequent last decade, a symptom change hydroclimatic behaviour already observed en...

In this paper we examine the use of hypotheticals as a heuristic device to assist a case-based reasoner test the strengths, weaknesses, and ramifications of an analysis or argument by exploring and augmenting the space of known cases and indirectly, the at tendant spaces of doctrine and argument. Our program, HYPO, works in the task domain of the law, particularly, the area of trade secret prot...

In this paper, we empirically test the relation between price discrimination and product market competition in a two-sided market environment using a new data set of Spanish local TV stations that provides information on subscription and advertising prices per station for 1996, 1999 and 2002. Due to changes in regulation during this period affecting the degree of local market competition, we us...