Innovative ship design projects often require an extensive concept design phase to allow a wide range of potential solutions to be investigated, identifying which best suits the requirements. In these situations, the majority of ship design tools do not provide the best solution, limiting quick reconfiguration by focusing on detailed definition only. Parametric design, including generation of t...

The most recent ships incorporate a number of significant design enhancements to improve the vessel’s seaworthiness. Bulbous bow, bilge keel, stern wedge, tunnel, spray rails, and others are examples. A wedge is small modification buttock lines aft station 19 1/2. use this hull feature on high-speed planning craft for purpose improved powering performance an accepted naval architectural practic...

The aim of this paper is to offer a faster and more rigorous way for calculating the Beta-Shape. The Beta-Shape is a tight-fitting concave polygonal contour, similar to the Alpha Shape, but which remains connected when data points are farther away than the desired resolution. The proposed method uses a computational geometry approach. We also propose an improvement to the original Beta Shape, a...

The practical application of the Computational Fluid Dynamics (CFD), for predicting the flow pattern around Multipurpose Amphibious Vehicle (MAV) hull has made much progress over the last decade. Today, several of the CFD tools play an important role in the land and water going vehicle hull form design. CFD has been used for analysis of MAV hull resistance, seakeeping, maneuvering and investiga...

The numerical simulation of free-surface flows around sailing boats is a complex topic that addresses multiple mathematical tasks: the correct study of the flow field around a rigid hull, the numerical simulation of the hull dynamics, the deformation of the sails and appendages under transient external conditions like gusts of wind or wave patterns and, overall, the coupling among all these com...

Because grain shape is an important component of rice grain yield, the discovery of genes related to rice grain shape has attracted much attention of rice breeding programs. In recent years, some of these genes have been cloned and studied. They have been found not only regulate grain shape by changing the shape of the spikelet hull, but also regulate endosperm development through control of ce...

This paper presents an efficient hardware-accelerated method for novel view synthesis from a set of images or videos. Our method is based on the photo hull representation, which is the maximal photo-consistent shape. We avoid the explicit reconstruction of photo hulls by adopting a view-dependent plane-sweeping strategy. From the target viewpoint slicing planes are rendered with reference views...

Microstructure sensitive design was used in this study to design a textured soft magnet material to meet a range of magnetic properties. The evolution of microstructure and magnetic properties during mechanical processing was simulated and presented in a spectral representation for microstructure (texture hull) and magnetic property (property hull). The set of properties for a single path (or m...

This report presents the concept of computing a \shape" of a nite set of points in the three-dimensional Euclidean space R 3. To deene the geometric notion of the \shape", a generalization of a convex hull based on an-shape of the set of points is used. An-shape is a polytope uniquely determined by the points and a parameter 2 R, that controls the desired level of detail. Constructing such shap...