Virtual prototyping involves a synthesis of engineering methodology and immersive, three-dimensional vi-sualization technology. Ideally, this is a process in which computational models are used in place of physical models in the development of a new product or design concept. If used successfully, virtual prototyping can lead to more rapid product design and development. Software is currently b...

ŽAnimals colonizing lightless subterranean habitats can no longer rely on visual signals to find mating partners. In the present study, we investigated the ability of males to recognize females in two surface and a cave dwelling population of a livebearing fish, Poecilia mexicana. In surface populations males discriminated between sexes with visual plus non-visual cues available and with visual...

In this paper, necessary and sufficient conditions are stated for the Craig-Sakamoto equation det(I − sA − tB) = det(I − sA)det(I − tB) to hold for all scalars s, t ∈ C. Moreover, spectral properties for matrices A and B that satisfy this equation are investigated.

– Determination of the ceiling, floor, and void hominid cave.– Using time-depth adjustments to correct floor position.– Statistical method determine cave real depth.– Creation a 3D representation for cave.

CAVE is a room-sized, immersive virtual reality system developed in early 1990s at Univ. Illinois, Chicago[1]. Wall screens on which stereoscopic images are projected from the rear surround the viewer in the room. The floor is another screen on which stereo images are projected usually from the ceiling. A high-precision head tracking system with the six degrees-of-freedom (DOF) is installed. Th...

Unchanging physicochemical conditions and nutrient sources over long periods of time in cave and karst subsurface habitats, particularly aquifers, can support stable ecosystems, termed autochthonous microbial endokarst communities (AMEC). AMEC existence is unknown for other karst settings, such as epigenic cave streams. Conceptually, AMEC should not form in streams due to faster turnover rates ...

The Bronze Age cave “Les Fraux” at Saint-Martin-de-Fressengeas (Dordogne, France) has been discovered in 1989. This site made of a network of galleries of several hundred meters, is a field of investigation for several researchers. This paper will focus on threedimensional contact free measurement techniques for a full 3D-documentation of the structural elements of the cave with some focus on c...

This important cave is described together with an analysis of the potential health effects for humans inhabiting an ecosystem, albeit on a temporary basis, possessing an ammonia rich atmospheric environment. The work emphasises potential environmental hazards together with an evaluation of the range of clinical effects. The environmental pollution in this cave is generally unlikely to have mark...

We developed an application launcher called Multiverse for scientific visualizations in a CAVE-type virtual reality (VR) system. Multiverse can be regarded as a type of three-dimensional (3D) desktop environment. In Multiverse, a user in a CAVE room can browse multiple visualization applications with 3D icons and explore movies that float in the air. Touching one of the movies causes “teleporta...