In viticulture, knowledge of vineyard vigour represents a useful tool for management. Over large areas, the grapevine vigour is mapped by remote sensing usually with vegetation indices like NDVI. To achieve good correlations between NDVI and other vine parameters the rows of a vineyard must be previously identified. This paper presents an unsupervised classification method for the identificatio...

We present a hierarchical technique, based on integer linear programming (ILP), to generate area-efficient layouts of relatively large complex CMOS cells in the twodimensional (2-D or multi-row) style. First, the CMOS circuit is partitioned into subcircuits called clusters. Next, the set of all minimum-width 1-D placements (chain covers) are generated for each cluster, and form the input to the...

We propose a novel block-row partitioning method in order to improve the convergence rate of the block Cimmino algorithm for solving general sparse linear systems of equations. The convergence rate of the block Cimmino algorithm depends on the orthogonality among the block rows obtained by the partitioning method. The proposed method takes numerical orthogonality among block rows into account b...

Many agricultural experiments have say 7-12 treatments in 3-5 replicates, and are laid out in a rectangle. Is it better to do a standard randomized complete block design in rows, or a complete block design in rows but with restricted randomization, or an efficient row-column design? These approaches differ in the variance of the estimate of a difference between two treatments, and in the bias o...

Root lodging (RL) in maize can reduce yield and grain quality. A wide–narrow row planting pattern increase the growing regions of northeastern China, but whether it improve RL resistance is not clear. Therefore, this study, root architecture distribution, physiological activity, rate under 1 (uniform ridge 65 cm, east–west direction) 2 (wide–narrow rows, 40 double narrow rows 90 wide north–sout...

Coincidence detection in visual and auditory cortex may also be critical for feature analysis in somatosensory cortex. We examined its role in the rat postero-medial barrel subfield (PMBSF) using high-resolution arrays of epipial electrodes. Five vibrissae, forming an arc, row, or diagonal, were simultaneously or asynchronously stimulated to simulate contact with a straight edge of different an...

Kenaf (Hibiscus cannabinus L. ), a warm-season annual plant, has shown potential as an alternate source of fiber in the United States. Although preliminary research has indicated feasibility ofkenaf production in Virginia, production details are lacking. Field experiments were conducted during 1995 and 1996 to determine optimal row spacing and fertilizer needs, and to compare available kenaf cu...

Abstract The article presents the results of choosing tires for driving wheels cotton-growing row-crop tractors during inter-row cultivation. track surfaces 15.5-38, 16.9R38, 420/85R38 and 18.4R38 are compared on a rigid base. hard base maximum pressure soil, soil density tire tread depth were determined in experimental studies. When tires, their average q av max pressures determined. In order ...

The dynamics of soil moisture and its temperature is an important criterion for evaluating tillage technology in terms achieving plant production stability. Understanding changes depending on rainfall air necessary to develop application models agriculture 4.0. A hypothesis was adopted assuming that the thermal properties will depend cultivation. Hence, aim research learn during a growing seaso...