Several reasons contributed to the low success of early trials, including varieties that were not adapted to the soils, climatic conditions and photoperiod of the region. Most of the trials were carried out in the Delta, where the night temperatures were too low for the varieties used. In additions, the Delta soils were very fertile, while the varieties tested were bred to produce an adequate y...

Abstract: In this paper, a novel spatial domain 2-D sigma-delta modulation using two-layered discrete-time cellular neural networks (DT-CNNs) with multi-stage noise shaping (MASH) property is proposed. Although the sigmadelta modulation is widely used for realizing of analog to digital converter (ADC), sigma-delta concepts are only for 1-D signals. Signal processing in the digital domain is ext...

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This paper presents the study of an original closed-loop conditioning approach for fully-integrated convective inertial sensors. The method is applied to an accelerometer manufactured on a standard CMOS technology using an auto-aligned bulk etching step. Using the thermal behavior of the sensor as a summing function, a first order sigma-delta modulator is built. This “electrophysical” modulator...

In this paper we discuss the packing properties of invariant disks defined by periodic behavior of a model for a bandpass Σ–∆ modulator. The periodically coded regions form a packing of the forward invariant phase space by invariant disks. For this one-parameter family of PWIs, by introducing codings underlying the map operations we give explicit expressions for the centers of the disks by anal...