We examined the effect of decomposing leaf litter and dissolved inorganic nutrients on the heterotrophic biofilm of submerged wood in streams with and without leaves. Leaf litter was excluded from one headwater stream in August 1993 at Coweeta Hydrologic Laboratory in the southern Appalachian Mountains. We compared microbial processes on wood in the litter-excluded stream to a reference stream ...

Social semantic data are becoming a reality, but apparently their streaming nature has been ignored so far. Streams, being unbounded sequences of time-varying data elements, should not be treated as persistent data to be stored “forever” and queried on demand, but rather as transient data to be consumed on the fly by queries which are registered once and for all and keep analyzing such streams,...

FaceMe is an accessible head-tracker vision-based interface for users who cannot use standard input methods for mobile devices. We present two user studies to evaluate FaceMe as an alternative to touch input. The first presents performance and satisfaction results for twelve able-bodied participants. We also describe a case study with four motorimpaired participants with multiple sclerosis. In ...

The spatial occupancy patterns and activity of cattle grazing three riparian pastures was investigated in northeastern Oregon using Global Positioning System (GPS) collars logging at 1-sec intervals. Cattle consistently selected plant communities as grazing areas that had forage in sufficient volume to meet their requirements and favored communities as resting areas that were dry and open. Catt...

Anthropogenic land-cover change is driving biodiversity loss worldwide. At the epicenter of this crisis lies Southeast Asia, where biodiversity-rich forests are being converted to oil-palm monocultures. As demand for palm oil increases, there is an urgent need to find strategies that maintain biodiversity in plantations. Previous studies found that retaining forest patches within plantations be...

The intent of this talk is to propose an alternative way to deal with observability of systems governed by ODEs, in a more general setting than the standard output equation. We show that the starting instants from which the system is observabe correspond to points of single-valuedness of a multifunction I(·), which involves the viability kernel of output domain under the augmented system. The a...

This study reports the first set of data on the concentration of mercury in muscle tissue of several varieties of fish from Lake Titicaca, including the pejerrey (Basilichthyes bonariensis), the carachi (Orestias), and 2 types of indigenous catfish (Trichomycterus). Approximately 27% of the pejerrey and 75% of the carachi exceeded the US EPA fish tissue-based water quality criterion level of 0....

It is presumed that most instruments exhibit linearity in the range of their operation. An instrument is said to be linear if the input physical quantity and the resulting output reading of the instrument have a linear relationship. The output of the instrument could be linear deflection, angular deflection or voltage etc. This output has to be displayed in terms of the physical quantity which ...

Business development and marketing are two important business functions. Business development is a concept that relates closely to strategy and is part of the business model. It is the function of growing a business through a range of activities from mergers and acquisitions, financial and performance management, and their associated revenue and profit streams. Business development includes mar...