نتایج جستجو برای: Tree shaking

تعداد نتایج: 175567  

Journal: :iran agricultural research 2007
m. loghavi sh. mohseni

the aim of this study was to determine the most suitable shaking frequency and amplitude for shake harvesting lime fruit (c. aurantifolia). a tractor mounted limb shaker with adjustable shaking frequency and amplitude, powered by the tractor power-take-off shaft was designed and developed for this study. the rotating input power was transmitted to the shaker flywheel through a multiple sheave v...

Journal: :Robotics 2017
Suraj Amatya Manoj Karkee Qin Zhang Matthew D. Whiting

Automation in cherry harvesting is essential to reduce the demand for seasonal labor for cherry picking and reduce the cost of production. The mechanical shaking of tree branches is one of the widely studied and used techniques for harvesting small tree fruit crops like cherries. To automate the branch shaking operation, different methods of detecting branches and cherries in full foliage canop...

Journal: :Science 2016
Elizabeth Pennisi

18 NOVEMBER 2016 • VOL 354 ISSUE 6314 817 I n 2010, a comparison between the genomes of a Neandertal and people today settled what anthropologists and geneticists had debated for decades: Our ancestors had indeed mated with their archaic cousins, producing hybrid children. They, in turn, had mated with other modern humans, leaving their distant descendants—us—with a permanent Neandertal legacy....

Journal: :Science 1972
D F Parkhurst G I Pearman P L Neel R W Harris

ence in the productivity of the vegetation on the control plots. Odum et al. (2) observed comparable differences in productivity during old field succession, but these were attributable to previous fertilization and changes in the growth forms of the dominants, factors not adequately discussed by Hurd et al. We have also observed significant differences in the primary production of herbaceous c...

M. LOGHAVI SH. MOHSENI

The aim of this study was to determine the most suitable shaking frequency and amplitude for shake harvesting lime fruit (C. aurantifolia). A tractor mounted limb shaker with adjustable shaking frequency and amplitude, powered by the tractor power-take-off shaft was designed and developed for this study. The rotating input power was transmitted to the shaker flywheel through a multiple sheave v...

Journal: :Lancet 2005
Lyle J Palmer Lon R Cardon

Much effort and expense are being spent internationally to detect genetic polymorphisms contributing to susceptibility to complex human disease. Concomitantly, the technology for detecting and genotyping single nucleotide polymorphisms (SNPs) has undergone rapid development, yielding extensive catalogues of these polymorphisms across the genome. Population-based maps of the correlations amongst...

1996
Jamsheed Shorish Stephen E. Spear

In this paper, we develop an agency-theoretic extension of the Lucas asset pricing model and examine the resulting asset price dynamics. In the model, an agent of the firm can expand or contract the firm’s output and dividend payments in response to exogenous shocks, although expansions become increasingly costly for the agent to maintain. Analysis of numerical simulations shows that the time-s...

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