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Possible causes of spatial variability in Diatraea saccharalis Fabr. (Lep., Crambidae) and its parasitoid populations in sugarcane fields in Brazil
(Blackwell Verlag Gmbh, 2003-11-01)
Based on the large data set stored in some sugarcane mills regarding the biological control programme of Diatraea saccharalis using the parasitoids Cotesia flavipes and tachinid flies, the aim of the present study was to ...
Possible causes of spatial variability in Diatraea saccharalis Fabr. (Lep., Crambidae) and its parasitoid populations in sugarcane fields in Brazil
(Blackwell Verlag Gmbh, 2003-11-01)
Based on the large data set stored in some sugarcane mills regarding the biological control programme of Diatraea saccharalis using the parasitoids Cotesia flavipes and tachinid flies, the aim of the present study was to ...
Geostatistical techniques applied to spatial distribution of macroorganisms in soybean crop
(2018-03-01)
The use of geostatistical techniques has allowed the monitoring of macrofauna spatial variability in crops of economic interest, enabling the creation of maps and more adequate management strategies. The aim of this study ...
Spatio-temporal variability in benthic microbial activity and particle flux in the Laurentian Trough
(Deep Sea Research Part I: Oceanographic Research Papers, 1997)
Spatial variability within a single oceanographic station (10-1000m radius) is poorly understood, potentially limiting detection of short-lived moderate fluctuations in organic matter input and the benthic response. ...
Variable structure control of switched systems based on Lyapunov-Metzler-SPR systems
(2008-09-24)
This paper presents two Variable Structure Controllers (VSC) for continuous-time switched plants. It is assumed that the state vector is available for feedback. The proposed control system provides a switching rule and ...
Variable structure control of switched systems based on Lyapunov-Metzler-SPR systems
(2008-09-24)
This paper presents two Variable Structure Controllers (VSC) for continuous-time switched plants. It is assumed that the state vector is available for feedback. The proposed control system provides a switching rule and ...
Soil and Weed Survey for Spatially Variable Herbicide Application on Railways
(2004-02-01)
Weed control on railways is frequently done by herbicide application, using large amounts of chemicals and labour. Only a few hectares of surface area on a railway can be many kilometres long so high levels of spatial ...
Implementation of a DC-DC converter with variable structure control of switched systems
(2011-09-14)
This paper presents a control method for a class of continuous-time switched systems, using state feedback variable structure controllers. The method is applied to the control of a two-cell dc-dc buck converter and a control ...