نتایج جستجو برای: sweep line method
تعداد نتایج: 1985012 فیلتر نتایج به سال:
In this study we tested an alternative method for collecting mosquito larvae called the sweep net catch method and compared its efficiency to that of the traditional dip method. The two methods were compared in various water bodies within Kruger National Park and Lapalala Wilderness area, South Africa. The sweep net catch method performed 5 times better in the collection of larvae and equally a...
No current garbage collector combines space efficiency, low collector times, and mutator (application) locality for contemporaneously allocated objects. For example, free-list allocation coupled with mark-sweep collection achieves space efficiency, but poor mutator locality. On the other hand, contiguous (bump-pointer) allocation with copying collection provides mutator locality but poor space ...
This article proposes an efficient correction model that enables the extension of blade element momentum method (BEM) for swept blades. Standard BEM algorithms, assuming a straight in rotor plane, cannot account changes induction system introduced by sweep. The proposed corrects axial regarding two aspects: azimuthal displacement trailed vorticity and curved bound vortex on itself. extended alg...
Phase characteristics and latency of 2f1-f2, 3f1-2f2, and 2f2-f1 acoustic distortion product otoacoustic emissions (DPOAEs) recorded in normally hearing adults have been described in a companion paper [Moulin and Kemp, "Multicomponent acoustic distortion product otoacoustic emission phase in humans. I. General characteristics," J. Acoust. Soc. Am. 100, 1617-1639 (1996)]. Phase-versus-frequency ...
The Forward-Backward Sweep Method is a numerical technique for solving optimal control problems. The technique is reviewed and a convergence theorem is proved for a basic type of optimal control problem. Examples illustrate the performance of the method.
Topological sweep can contribute to efficient implementations of various algorithms for data analysis. Real data, however, has degeneracies. The modification of the topological sweep algorithm presented here handles degenerate cases such as parallel or multiply concurrent lines without requiring numerical perturbations to achieve general position. Our method maintains the O(n) and O(n) time and...
We examine the problem of pushing all the points of a planar region into one point using parallel sweeps of an infinite line, minimizing the sum of the lengths of the sweep vectors. We characterize the optimal 2-sweeps of triangles, and provide a linear-time algorithm for convex polygons.
Arthropods are critical ecosystem components due to their high diversity and sensitivity to perturbation. Furthermore, due to their ease of capture they are often the focus of environmental health surveys. There is much debate regarding the best sampling method to use in these surveys. Sweep netting and pan trapping are two sampling methods commonly used in agricultural arthropod surveys, but h...
We show how to implement eecient copying garbage collection for Prolog. We measure the eeciency of the collector compared to a standard mark-sweep algorithm on several programs. We then show how to acco-modate generational garbage collection and Prolog primitives that make the implementation more diicult. The resulting algorithms are simpler and more eecient than the standard mark-sweep method ...
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