Precision agriculture technologies are an integral part of many crop production operations. However, implementation for N application has lagged, primarily due to lack of a viable system for variable N rate decisions. Active canopy sensors have been developed as a tool to determine plant N stress deficiency and provide an on-the-go decision for implementing variable rate. There are two general ...

A shaper is a system that stores incoming bits in a buuer and delivers them as early as possible, while forcing the output to be constrained with a given arrival curve. A shaper is time invariant if the traac constraint is de-ned by a xed arrival curve; it is time varying if the condition on the output is given by a time varying traac contract. This occurs, for example, with renegotiable variab...

The rate of occurrence of words is not uniform but varies from document to document. Despite this observation, parameters for conventional n-gram language models are usually derived using the assumption of a constant word rate. In this paper we investigate the use of variable word rate assumption, modelled by a Poisson distribution or a continuous mixture of Poissons. We present an approach to ...

The fixed slope lossy algorithm derived from the kthorder adaptive arithmetic codeword length function is extended to the case of finite-state decoders or trellis-structured decoders. It is shown that when this algorithm is used to encode a stationary, ergodic source with a continuous alphabet, the Lagrangian performance (i.e., the resulting compression rate plus times the resulting distortion)...

2 Dept. Agro Forestry Engineering– Universitat de Lleida 5 6 Abstract 7 Two different spray application methods were compared in three vine varieties at 8 different crop stages. A conventional spray application with a constant volume rate per 9 unit ground area (l·ha -1 ) was compared with a variable rate application method designed 10 to compensate electronically for measured variations in can...