During the past six years, we have conducted a series of experiments using MBARI's ROV technology to study several of the modes of ocean CO_2 sequestration, such as mid-water releases of rising droplet plumes, deep-water releases near neutral buoyancy, and benthic releases in both shallow (600m) and deep (>3000m) water. These initial small-scale experiments have focused on observing the physical and chemical behavior of liquid carbon dioxide in a cold, high pressure environment where clathrate hydrate formation is thermodynamically favored but where actual experiences in limited. Video high-lights from a variety of experiments will be presented.

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In this paper, the author has concentrated to the branching network structures such as the tree branches, root networks and arterial branch systems. The optimality of natural branching network systems is discussed and dominant parameters to control the branching networks are extracted. Then, the acquired branching and growth rules are used to simulate the construction of the numerical model of branching system. Some numerical examples of branching tree growth simulation in the two-and three-dimensional space will be shown, and the optimality of the simulated networks will be discussed.

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Though we have entered the era of Digital Design, the contemporary state of CAD/CAE is not satisfactory. Here the author will explain, how the different subjects, such as the combination of CAD and CAE, the New CAD, the mesh generation technology with density control, the CAE, based on parallel computing, etc., can be used to further development of Digital Design technology.

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In initial design period when CAD data are not yet enough, CAD/CAE system is not applicable for the design. Here we try to use CG based on CSRBF (Compactly Supported Radial Basis Functions) for the initial design.

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The disadvantages of parametric surface modeling methods become obvious when a compound surface is designed. Recursive subdivision schemes have been verified to be effective in the field of CAD as well as Computer Graphics and Computer Animation. Two classifications of subdivision schemes are briefly introduced and their applications are presented.

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