This paper shows how to generate a cache-oblivious memory layout of a well-shaped finite-element mesh G. This cache-oblivious mesh layout enables asymptotically optimal mesh updates, in which each vertex communicates with all of its neighbors. Mesh updates is the building block of iterative linear system solver. For block size B and cache size M, the mesh update cost is O(1+ |G|/B), assuming th...

This work discusses the influence of flexibility within the multibody approach for wind-turbine gearbox modeling and validates them, by means of a generic gearbox calculation consisting of one planetary gear stage and two helical stages. First the state-of-the-art rigid multibody modeling with discrete flexibility is discussed. Secondly flexible multibody modeling by means of reduced finite ele...

Preparata and Vuillemin proposed the cube-connected cycles (CCC) in 1981 16], and in the same paper, gave an asymptotically-optimal layout scheme for the CCC. We give a new layout scheme for the CCC which requires less than half of the area of the Preparata-Vuillemin layout. We also give a non-trivial lower bound on the layout area of the CCC. There is a constant factor of 2 between the new lay...

In this study, optimal layout design approach was used to solve problems related to site layout design of agricultural facilities such as refrigeration house, grading and packing house and warehouse. A basic program to support the rational construction of such facilities using Simulated Annealing (SA), one heuristic algorithm and one solution for combinatorial optimization problems, was coded i...

We consider the problem of laying out a tree with fixed parent/child structure in hierarchical memory. The goal is to minimize the expected number of block transfers performed during a search along a root-to-leaf path, subject to a given probability distribution on the leaves. This problem was previously considered by Gil and Itai, who developed optimal algorithms when the block-transfer size i...

Preparata and Vuillemin proposed the cube connected cycles CCC in and in the same paper gave an asymptotically optimal layout scheme for the CCC While all the known optimal layouts including the Preparata Vuillemin layout of the CCC have long wires we give a new layout scheme which has no long wires while keeping the asymptotically optimal area Hence we can conclude that the CCC can be laid out...

Condition Monitoring (CM) of wind turbines can greatly reduce the maintenance costs for wind farms, especially for offshore wind farms. A new condition monitoring method for a wind turbine gearbox using temperature trend analysis is proposed. Autoassociative Kernel Regression (AAKR) is used to construct the normal behavior model of the gearbox temperature. With a proper construction of the memo...

We consider the problem of laying out a tree with xed parent/child structure in hierarchical memory. The goal is to minimize the expected number of block transfers performed during a search along a root-to-leaf path, subject to a given probability distribution on the leaves. This problem was previously considered by Gil and Itai, who developed optimal algorithms when the block-transfer size B i...

The wind industry has had a chronic problem with the reliability of its gearboxes [1], [2]. Experience has shown that premature gearbox failure is a leading maintenance cost driver that can easily consume the profit margin from a wind turbine operation. Condition monitoring is already understood to have potential to mitigate this risk by managing gearbox maintenance through the promises of reli...