Abslmct-In an overparametrized model reference adaptive control & r ) = dt)r(') system, the measured signal n(t) cannot he persistently exciting (PE) I + rT(r )r ( t ) for any hounded reference input r ( t ) . The controller parameter vector for model-plant transfer function matching lies in a linear variety in the where = y ( t ) ~ y , , 3 ( t ) p ( t ) { ( t ) ~ , ( ~ ) p ( r ) ~ ( r l ,...

Correspondence: M.Theau-Clement, [email protected] Received September 2006 Accepted February 2007. ABSTRACT: This review analyses the main factors of success of insemination as well as the methods suitable for oestrus induction in order to improve reproductive efficiency of rabbit does in term of fecundity (combining fertility and prolificacy). Parity, lactation status, pse...

Background: The Gyr breed is widely used in Colombian low tropic dairy production systems. During the last 10 years, Asociación Colombiana de Criadores Ganado Cebú† - ASOCEBU, has been leading a milk control program which led to creation of dataset that permits carry out first analysis yield cattle country using records from several herds. Objectives: To study dynamics through estimation lactat...

Chronic infections caused by persistent pathogens represent an important health problem. Here, we establish a simple practical mouse Salmonella infection model for identifying bacterial maintenance functions that are essential for persistency. In this model, a substantial fraction of Salmonella survived even several days of treatment with a potent fluoroquinolone antibiotic indicating stringenc...

The present study examines the benefits of instructional animations in a collaborative learning situation. We investigated the interactions that occur during collaborative learning from different materials: animated versus static pictures, both with or without persistency of information. The animation factor had no effect on the types of interactions but the persistency of information led to fe...