Abstract: An apparatus and method are provided for monitoring subsurface soil conditions in real time and communicating data about the subsurface soil conditions to a monitor that analyzes the data to provide warnings to the system operator and to automatically initiate one or more soil treatment processes. The apparatus includes nodes with soil condition sensors and radio transceivers. The nodes are communicatively connected by a network that includes at least one transceiver. The nodes optionally include means for controlling turf treatment devices in response to commands from the computer.

Abstract: This application discloses a dynamic knee extension assist device for paraplegic patients and others needing such a device. Cuffs adapted to be secured to a patient's thigh are provided along with mounting means adapted to be secured to a patient's leg below the knee. An elongated elastic member is provided with a means for removably mounting each end thereof to the cuff means at a predetermined tension. Also provided is means for pivotally securing the elastic means intermediate its ends to the mounting means. A lateral knee brace is rigidly disposed between the cuff and the mounting means. The elastic member provides a flexion moment when the patient is seated. As the patient arises, the flexion moment progressively diminishes and then converts to a progressively increasing extension moment as the patient continues to rise.