Title of Document:TRANSPORT, SOURCES, AND QUALITY OFSESTON IN A PIEDMONT HEADWATERSTREAMDavid Charles Richardson, Doctor of Philosophy2008Directed By:Dr. Margaret Palmer, Marine, Estuarine andEnvironmental Science, Chesapeake BiologicalLaboratoryDr. Louis A. Kaplan, Stroud Water ResearchCenter Streams transport and process particulate organic carbon (...

Preferential flow from stream banks is an important component of pesticide transport in the mountainous areas of northern Thailand. Models can help evaluate and interpret field data and help identify the most important transport processes. We developed a simple model to simulate the loss of pesticides from a sloped litchi (Litchi chinensis Sonn.) orchard to an adjacent stream. The water regime ...

Quantifying the travel times, pathways, and dispersion of solutes moving through stream environments is critical for understanding the biogeochemical cycling processes that control ecosystem functioning. Validation of stream solute transport and exchange process models requires data obtained from in-stream measurement of chemical concentration changes through time. This can be expensive and tim...

We observe the misbehavior of traditional LRU-like buuer management schemes in video-on-demand (VOD) applications, which fail to utilize the buuer space eeciently. By taking advantage of the characteristics of these applications, we design a new buuer management technique called Dynamic Grouping. This new approach dynamically groups video streams into groups to allow streams in each group to sh...

Explaining adaptive behavior is a central problem in artificial intelligence research. Here we formalize adaptive agents as mixture distributions over sequences of inputs and outputs (I/O). Each distribution of the mixture constitutes a ‘possible world’, but the agent does not know which of the possible worlds it is actually facing. The problem is to adapt the I/O stream in a way that is compat...

Real Time audio conferencing in IP based packet network is one of the popular applications in these days. There are some serious synchronization problems in this technology, some of them are inter stream, intra stream and group synchronization. This paper deals with the problem of audio group synchronization in distributed multiparty group conferencing. When more than one participant in an audi...

Once dissolved uranium (U) from tailings deposits enters adjacent streams, subsequent downstream transport is affected by the rate at which U is immobilised in sediments, thereby lowering its concentration in stream water. For aqueous phases immobilisation includes adsorption onto sediments and suspended solids, as well as precipitation and co-precipitation as insoluble compounds, all mechanism...