Indirect measurement of soil electrical conductivity (EC) has become a major data source in spatial/temporal monitoring of soil salinity. However, in many cases, the weak correlation between direct and indirect measurement of EC has reduced the accuracy and performance of the predicted maps. The objective of this research was to estimate soil EC based on a general linear model via using se...

The design of the POSTGRES data model is described. The data model is a relational model that has been extended with abstract data types including user-defined operators and procedures, relation attributes of type procedure, and attribute and procedure inheritance. These mechanism can be used to simulate a wide variety of semantic and object-oriented data modeling constructs including aggregati...

Here we describe the Semantic Pictionary Project—a set of online games and tools designed to collect large amounts of structured data about the object characteristics and perceptual properties of word referents. The project hinges on the use of encoding-decoding games and a set of creation tools to capture data using online crowdsourcing. We describe the architecture of the basic tools behind t...