abstract: compaction under tractors tires is of special concern because the weight of these machines has increased dramatically in the last years. these machines and others associated with crop cultural practices weight enough to significantly compact the soil, especially if the soil is soft with high moisture content during tilling, planting, or harvesting. the stress distribution and the size...

STATEMENT OF PROBLEM The use of soft liners as female receptacles for ball attachments retaining immediately loaded implant overdenture has been recommended to enhance osseointegration and provide a shock absorbing effect. However, which liner and which thickness is still unclear. PURPOSE The purpose of this finite element analysis (FEA) study was to evaluate the effect of a 2- and 4-mm thick...

Objectives: The present study evaluated the effect of bar and ball attachment designs on retention and stability of a mandibular overdenture supported by four implants. Methods: An edentulous mandibular acrylic resin model with four implants in the anterior part of the ridge (A, B, D and E) was fabricated. A metal framework simulating the overdenture was also fabricated. Totally, 30...

In classical photogrammetric processing pipeline, the automatic tie point extraction plays a key role in the quality of achieved results. The image tie points are crucial to pose estimation and have a significant influence on the precision of calculated orientation parameters. Therefore, both relative and absolute orientations of the 3D model can be affected. By improving the precision of image...

Prompted by the increasing requirement for the fast but precise and detailed digital documentation of archaeological excavations and heritage artifacts, in this article we report our latest experience in capturing detailed 3D geometric information of two sites in Tuscany, Italy, using the image-based approach. We present a 3D recording flow-line, based on multi-image matching, capable of retrie...

The concept of oblique image acquisition entered the literature long after overhead photogrammetric techniques. technique is applied to model edge surfaces buildings that cannot be obtained with vertical (nadir) and eliminate problems arise in orthorectification high-rise urban areas. Oblique by Unmanned Aerial Vehicles (UAV) independent aerial photogrammetry considered possible unique flight p...