We present a method for the integration of illumination constraints within a deformable model framework. These constraints are incorporated as nonlinear holo-nomic constraints in the Lagrange equations of motion governing the deformation of the model. For improved numerical performance we employ the Baumgarte stabilization method. Our methodology is general and can be used for a broad range of ...

The photosynthetic potential of leaves and chloroembryos of Cyamopsis tetragonoloba (L.) Taub as measured by (14)C-bicarbonate fixation, Hill activity, and in vivo fluorescence transients is compared. On a chlorophyll basis, dark fixation of NaH(14)CO(3) in chloroembryos was 1.5 times higher than that of the leaf, whereas carbon fixation under illumination was threefold higher in the leaf than ...

<p><span lang="EN-US">When the GPV is under partial shading, several peaks appear in characteristic P-V, namely a GMP and one or more local maximums. The classical algorithm ‘P&O’ MPPT cannot converge on for low irradiation values trapped by tracking down LMP so making ineffective ineffective, this case 200 W/m². An alternative objective function developed to optimize perfor...

This paper addresses the problem of determining local surface orientation from the intensity information contained in a single monocular view. It represents another look at the problem of obtaining shape from shading information. This problem was first formulated by as the solution of first-order non-linear partial differential equations. It was subsequently reformulated by <Horn 19...

This paper presents a size-structured dynamical model of plant growth. The model takes the form of a partial differential-integral equation and includes the effects of self- shading by leaves. Closed form solutions are presented for the equilibrium size density distribution. Analytic conditions are derived for community persistence, and the self-thinning exponent is obtained as a function of sp...