منابع مشابه
Factors involved in alleviating water stress by partial crop removal in pear trees.
We studied the relief of water stress associated with fruit thinning in pear (Pyrus communis L.) trees during drought to determine what mechanisms, other than stomatal adjustment, were involved. Combinations of control irrigation (equal to crop water use less effective rainfall) and deficit irrigation (equal to 20% of control irrigation), fruit load (unthinned and thinned to 40 fruits per tree)...
متن کاملBalance in trees
We show that the set of vertices in a treeT of smallest weight balance is the (branchweight) centroid. We characterize the set of edges in T with smallest weight-edge difference in terms of the vertices of smallest weight balance. A similar characterization is obtained for the set of edges in T with smallest distance-edge difference in terms of the vertices of smallest distance balance. This yi...
متن کاملB-trees with relaxed balance
B-trees with relaxed balance have been deened to facilitate fast updating in a concurrent database environment. In that structure, updating and rebalancing are uncoupled such that extensive locking can be avoided in connection with updates. Constraints, weaker than the usual ones, are maintained such that the tree can still be balanced independent of the updating processes. We nd the idea of re...
متن کاملAVL Trees with Relaxed Balance
The idea of relaxed balance is to uncouple the rebalancing in search trees from the updating in order to speed up request processing in main-memory databases. In this paper, we describe a relaxed version of AVL trees. We prove that each update gives rise to at most a logarithmic number of rebalancing operations and that the number of rebalancing operations in the semidynamic case is amortized c...
متن کاملLand-Water Distribution and the Pear-Shape of the Earth
The orbital analysis of artificial Earth satellites have revealed the existence of a strong third harmonic in the gravitational potential of the Earth which gives its ‘pear-shape’ in the averaged meridional section. Various attempts to explain this pear-shape based on physical principles have proved to be inconclusive. In this study, a new approach based upon statistical correlation between var...
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ژورنال
عنوان ژورنال: Journal of the Japanese Society for Horticultural Science
سال: 1981
ISSN: 0013-7626,1880-358X
DOI: 10.2503/jjshs.50.297