نتایج جستجو برای: fdm
تعداد نتایج: 1979 فیلتر نتایج به سال:
Numerous studies suggest that dysfunctional basal ganglia-thalamo-cortical circuits are involved in both movement disorders and psychiatric impairments. The current exploratory investigation explored possible psychological differences, firstly between 24 healthy musicians (HM) and 24 musicians diagnosed with focal dystonia (FDM) (Study I), and secondly among 35 FDM patients only (Study II). Res...
This paper details the development of an innovative "green" hybrid rocket propulsion system, applicable to small spacecraft. When fully developed this propulsion technology has the potential to act as a "drop in" replacement for propulsion system utilizing hazardous propellants such as hydrazine. Fuel grains are manufactured using a form of additive manufacturing known as Fused Deposition Model...
In this work, the use of fused deposition modeling (FDM) in a (bio)analytical/lab-on-a-chip research laboratory is described. First, the specifications of this 3D printing method that are important for the fabrication of (micro)devices were characterized for a benchtop FDM 3D printer. These include resolution, surface roughness, leakage, transparency, material deformation, and the possibilities...
Association rule data mining is an important technique for finding important relationships in large datasets. Several frequent itemsets mining techniques have been proposed using a prefix-tree structure, FP-tree, a compressed data structure for database representation. The DIFFset data structure has also been shown to significantly reduce the run time and memory utilization of some data mining ...
Fused Deposition Modelling (FDM), a renowned Rapid Prototyping (RP) process, has been successfully implemented in several industries to fabricate concept models and prototypes for rapid manufacturing. This study furnishes terse notes about the material damping properties of FDM made ULTEM samples considering the effect of FDM process parameters. Dynamic Mechanical Analysis (DMA) is carried out ...
BACKGROUND: Painful restriction of shoulder abduction is a large problem in the population. It may diminish the quality of daily life and furthermore lead to constriction in work. The Fascial Distortion Model (FDM) describes a method for diagnosing and treating painful restriction of shoulder abduction. Up to now no clinical studies have been done to check the efficacy of the FDM on pathologies...
A new method of migration using the finite element method (FEM) and the finite difference method (FDM) is jointly used in the spatial domain. It has been applied to solve a time relay 2D wave equation. By using the semi-discretization technique of FEM in the spatial domain, the origin problem can be written as a coupled system of lower dimensions partial differential equations (PDEs) that conti...
Rapid prototyping (RP) refers to a class of technology that can automatically construct the physical models from computer aided design (CAD) data. Fused deposition modeling is one of the RP process that produced prototype from plastic material by lying track of semi molten plastic filament on to a platform in a layer wise manner from bottom to top. The quality of FDM made parts are highly depen...
In this paper, implementation of Multi-Input Multi-Output (MIMO) channel sounder is considered, taking hardware cost and realtime measurement into account. MIMO sounder needs some kind of multiplexing to distinguish between transmitting antennas. We compared three types of multiplexing, i.e. TDM, FDM, and CDM, for the sounding purpose in terms of realtime measurement, hardware cost, and major d...
Vorticity-stream function method and MAC algorithm are adopted to systemically compare the finite volume method (FVM) and finite difference method (FDM) in this paper. Two typical problems—lid-driven flow and natural convection flow in a square cavity—are taken as examples to compare and analyze the calculation performances of FVM and FDMwith variant mesh densities, discrete forms, and treatmen...
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