In this paper we present an efficient algorithm for sampling visual hulls. Our algorithm computes exact points and normals on the surface of visual hull instead of a more traditional volumetric representation. The main feature that distinguishes our algorithm from previous ones is that it allows for sampling along arbitrary viewing rays with no loss of efficiency. Using this property, we adapti...

One of the most important task in surgical simulation is the ability to cut volumetric organs. Several algorithms have already been described but none of them can actually maintain a specific and important topological property of the mesh called manifoldness. In this article we define the notion of manifoldness and we explain why it is important to preserve it. We propose a new algorithm that m...

Abstract In this work, we study the structure–topology–property relations of a series melt‐quenched lithium germanate glasses. These glasses exhibit so‐called anomaly, that is, germanium atoms feature distribution four‐coordinated and higher coordinated species, manifesting itself as anomalies in several material properties. Here, couple variations number atomic bond constraints with measured t...

Polymers have lower resistance to scratching and wear than metals. Liquid lubricants work well for metals but not for polymers nor for polymer-based composites (PBCs). We review approaches for improvement of tribological properties of polymers based on inclusion of fillers. The fillers can be metallic or ceramic-with obvious consequences for electrical resistivity of the composites. Distinction...

in this study, the diffusivity and volumetric mass transfer coefficients for the extraction of β-carotene from crude palm oil using co2 solvent in supercritical fluid were determined in the pressure range of 7.5-17.5 mpa and temperature range of 80-120 ºc. for this purpose, a statistical method was applied in order to minimize the number of experiments required. the volumetric mass transfer coe...

2 Summary 2D cadastre systems have shown limitations, especially when describing complex situations to various stakeholders. 3D information models for cadastre are now increasingly implemented to overcome these restrictions. However, 3D systems are not without their challenges and problems to be avoided. The challenges include: guaranteeing topological consistency when building 3D volumes, dete...

In this research, the influence of bolt preload on the fatigue strength of 2024-T3 aluminium alloy double lap bolted joints has been studied experimentally and numerically. To do so, three sets of the specimens were prepared and each of them subjected to tightening torque of 1,2.5 and 5 N-m and then fatigue tests were conducted under various cyclic axial load levels. In the numerical method, th...

The Soil-Water Characteristic Curve (SWCC) is an important soil function relating the water content of a soil to soil suction. Many unsaturated soil properties (or soil property functions) can be related to the water content versus suction relationship of a soil. Hydraulic conductivity, shear strength, chemical diffusivity, water storage, unfrozen volumetric water content, specific heat, and th...