. Again we found that loopy belief propagation always converged, with the average number of iterations equal to 8.65. The protocol for the ALARM network experiments dif fered from the previous two in that the structure and parameters were fixed -only the observed evidence differed between experimental

Abstract not found

equally well to represent sets and tuples. Such structures allow great flexibility in data representation What query language is appropriate for such structures? Here we propose a simple language UnQL for querying data organized as a rooted, edge-labeled graph. In this model, relational data may

It has long been known that formation of symbiotic root nodules in soybean (Glycine max (L.) Merr.) is con-trolled by several host genes referred to as Rj (rj) genes, but molecular cloning of these genes has been ham-pered by soybean’s complicated genome structure and large genome size. Progress

Ó The Author(s) 2010. This article is published with open access at Springerlink.com Abstract To understand carbon partitioning in roots and nodules of Datisca glomerata, activities of sucrosedegrading enzymes and sugar transporter expression patterns were analyzed in both organs, and plasmodesmal

No. 2 8 7 ot Summary.--This note shows how the Hill Aero-isoclinic Principle 1 works out in practice for a swept wing, fixed at the root and having straight flexural and inertia axes. The conditions assumed are readily represented in a wind-tunnel model and experiments by Lambourne ~ show good

Summary. ' Wind-tunnel tests to determine the flutter characteristics of a model wing, carrying a localised mass, are described. The investigation covers the effects of wing sweepback, and of the magnitude and position of the localised mass. Consideration is also given to the effects of pitching radius of gyration and aerodynamic shape. The mass values. used vary from 0 " 13 to 1- 17 times the wing mass. The test results indicate that the parameters that have the greatest effect on critical flutter speed are mass value, spanwise and chordwise position of the localised mass, and wing sweepback. Radius of gyration and aerodynamic shape of the localised mass are found to be secondary in their effects. It was found that the flutter speed of a wing could be c6nsiderably increased or decreased by attaching a localisec~ mass; under certain conditions the flutter speed could be more than doubled. A number of different forms of flutter were obtained in the tests, and the values of the parameters at the transition • from one form of flutter to another provide the main guide to the flutter characteristics of a wing carrying a localised mass. 1. Introduction.--Experimental investigations of the flutter characteristics of model wings. carrying localised masses t have been undertaken both in this country and elsewhere in the past. Generally speaking, these investigations were directed either towards establishing the behaviour of actual aircraft under particular loading conditions, or providing checks on theoretical

This paper proposes simple tests of error cross section dependence which are applicable to a variety of panel data models, including stationary and unit root dynamic heterogeneous panels with short T and large N. The proposed tests are based on average of pair-wise correlation coefficients

order language of graphs (respectively groups, binary strings, etc.) together with a least fixed point operator. As another example, a property is in logspace if and only if it is expressible in first order logic together with a deterministic transitive closure operator. The roots of our approach

Summary.-Wind tunnel tests and theoretical investigations have been carried out to study the effect of a localised mass on the flutter characteristics of a delta wing. The experimental work covered a wide range of spanwise and chordwise positions of the mass e.g., variation of the magnitude and radius of gyration of the mass itself, and the effect of the stiffness distribution of the wing. The theoretical work was more limited in its scope and was primarily intended to investigate the reliability of the theoretical approach to this kind of problem. These investigations have shown that the flutter characteristics of a delta wing carrying a localised mass are primarily dependent oil ' the location of the mass, its magnitude and the stiffness distribution of the wing itself. The flutter speed with a localised mass judiciously placed may be from three to four times that obtained with the same mass in a bad position. A localised mass in the region around the structural axis generally has an adverse effect on the flutter characteristics, while locations well aft, towards the trailing edge, are usually favourable. Particularly high flutter speeds are often associated with a localised mass close to the leading edge, but some caution is necessary, especially around the mid-span position, as the flutter characteristics in this region are very sensitive to variations in actual mass.