منابع مشابه
Ecological and pest-management implications of sex differences in scarab landing patterns on grape vines
BACKGROUND Melolonthinae beetles, comprising different white grub species, are a globally-distributed pest group. Their larvae feed on roots of several crop and forestry species, and adults can cause severe defoliation. In New Zealand, the endemic scarab pest Costelytra zealandica (White) causes severe defoliation on different horticultural crops, including grape vines (Vitis vinifera). Underst...
متن کاملCopulas and Vines (stat08012)
Copulas and vines allow us to model the distribution of multivariate random variables in a flexible way. This article introduces copulas via Sklar’s theorem, explains how pair copula constructions are built by decomposing multivariate copula densities and illustrates vine graphical representations.
متن کاملEnsiling of Potato Vines
Potato vines are a potential feed for cattle if the vines can be preserved. The objectives of this study were primarily to study alternative methods to preserve potato vines by ensiling and determine the effects of soil contamination on ensiling. In experiment 1, vines from four potato varieties were harvested individually with a flail chopper set at three heights to vary soil contamination. Th...
متن کاملScience amongst the vines
Introduction classically, cell signalling has been viewed in terms of linear pathways that lead from external or internal stimuli to cellular effectors. But this simple view developed more as a means to visualize and to understand the individual components of these complex systems, rather than to reflect reality. it is now clear that, in most cases, cell signalling is much more complex and invo...
متن کاملThe Dirac-Motzkin Problem on Ordinary Lines and the Orchard Problem (Invited Talk)
Suppose you have n points in the plane, not all on a line. A famous theorem of Sylvester-Gallai asserts that there is at least one ordinary line, that is to say a line passing through precisely two of the n points. But how many ordinary lines must there be? It turns out that the answer is at least n/2 (if n is even) and roughly 3n/4 (if n is odd), provided that n is sufficiently large. This res...
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ژورنال
عنوان ژورنال: Left History: An Interdisciplinary Journal of Historical Inquiry and Debate
سال: 2019
ISSN: 1913-9632,1192-1927
DOI: 10.25071/1913-9632.39454