Abstract Background Stress concentration may cause bone resorption even lead to the failure of implantation. This study was designed investigate whether a certain sagittal root position could stress around maxillary anterior custom-made root-analogue implants via three-dimensional finite element analysis. Methods The von Mises stresses in different groups were compared by Six models constructed...

Abstract: The purpose of this study is to produce scarf joint through explosive welding process (EXW). The scarf weld is a process in which the final bond interface is oblique. With applying the explosive welding technique, this joint can create a metallic bond between similar or dissimilar metals. In this study, chamfered end of aluminum and copper plates were joined explosively and named scar...

The diffraction problem of a three-dimensional elliptic Gaussian beam on a aperture array of rectangular holes is solved. The both normal and oblique incidences of the beam are considered and the results are presented in the form of the three-dimensional patterns. The pattern lobe distortion and conditions at which the side lobes appear are studied. The conditions under which the shift of the r...

[Purpose] The aim of this study was to clarify the relationship between spinal range of motion and trunk muscle activity during trunk rotation using a three-dimensional motion analysis system and surface electromyography. [Subjects and Methods] The subjects comprised 11 healthy men. A three-dimensional motion analysis system measured the trunk rotational angle of 4 segments of the thoracic vert...

Studies using post mortem human subjects (PMHS) are conducted for the design and evaluation of dummies. Biomechanical variables such as forces, accelerations, and deflections are used to characterize responses under simulated environments including frontal, rear, nearside and far-side impacts. The present paper is focused on the nearside occupant. Chest and abdominal deflections are important v...

We construct non-tight frames in finite-dimensional spaces consisting of periodic functions. In order for these frames to be useful in practice one needs to calculate a dual frame; while the canonical dual frame might be cumbersome to work with, the setup presented here enables us to obtain explicit constructions of some particularly convenient oblique duals. We also provide explicit oblique du...

The visualization of three-dimensional spatial information as oblique views is widely regarded as beneficial for the perceiving of three-dimensional space. From the cartographic perspective, oblique views need to be carefully designed, in order to help the map reader to form a useful mental model of the terrain. In this study, 3D cartographic methods were applied to illustrate directions, dista...

Activation of motoneurons innervating leech muscles causes the appearance of a two-dimensional vector field of deformations on the skin surface that can be fully characterized using a new technique (Zoccolan et al., 2001) based on the computation of the optical flow, the two-dimensional vector field describing the point displacements on the skin. These vector fields are characterized by their o...

We construct non-tight frames in finite-dimensional spaces consisting of periodic functions. In order for these frames to be useful in practice one needs to calculate a dual frame; while the canonical dual frame might be cumbersome to work with, the setup presented here enables us to obtain explicit constructions of some particularly convenient oblique duals. We also provide explicit oblique du...

ABSTRACT The present study evaluates shoulder kinematics of the Hybrid III and THOR NT, with the first version of a new shoulder design (SD-1), in 45° far-side, full frontal and 30° near-side collisions. In total eleven dummy tests were conducted in the three collision angles, while film and instrument data were generated and compared with those of PMHS data from Törnvall (2008). For the 45° fa...