scholarly journals Research Concerning Visualization System for Crane Operation with Producing Three-Dimensional Map and Recognizing Features

2020 ◽  
Vol 32 (1) ◽  
pp. 604-615
Author(s):  
Satoshi KUBOTA ◽  
Shigenori TANAKA ◽  
Kenji NAKAMURA ◽  
Yuhei YAMAMOTO ◽  
Masaya NAKAHARA ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Visualization System

A novel three-dimensional visualization system revealed an essential adaptive angiogenic response during the early phase of pulmonary hypertension

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
T Fujiwara ◽  
N Takeda ◽  
M Hatano ◽  
S Nishimura ◽  
I Komuro
Keyword(s):  
Pulmonary Hypertension ◽  
Early Phase ◽  
3D Visualization ◽  
Hypoxia Inducible Factor ◽  
Three Dimensional ◽  
Right Heart Failure ◽  
Wall Thickening ◽  
Funding Source ◽  
Vegf Expression ◽  
Visualization System

Abstract Background Pulmonary hypertension (PH) is characterized by increased pulmonary vascular resistance and right heart failure with progressive narrowing or occlusion of the pulmonary artery. However, the assessment of vascular remodeling is mostly limited to averaged increases in wall thickening, and even the role of vascular endothelial growth factor (VEGF), remains incompletely understood; Although abundantly expressed VEGF is expected to elicit angio-obliteration and the knockout of hypoxia inducible factor (HIF) prevents PH in mice, VEGF inhibitor Sugen exacerbates hypoxia (Hx)-induced PH model, which is referred to as VEGF paradox. Purpose To analyze three-dimensional (3D) spatiotemporal changes of pulmonary microstructure and function, which reflect the disease activity and lead to resolve the paradox. Methods and results We developed a novel 3D visualization system of microstructural networks in whole mouse organ with single-cell resolution, using combined tissue clearing technique called CUBIC and multiphoton excitation microscope. The system enabled the simultaneous 3D evaluation of microvascular structure, invaded macrophages and fibrosis with effective penetration of several mm (whole organ). Three-dimensional observations of PH mice models including Hx, Sugen/Hx, and human-like Alk1+/− hereditary PH models, revealed that not only inward (negative) microvessel remodeling with stenosis, but also marked elongation of microvascular ECs, was evident except Sugen/Hx model at the early phase, which had not been detected by 2D histological sections. Comparable transcriptome analysis revealed that PGC1α, which regulates HIF-independent VEGF expression and angiogenesis, plays an important role in the characteristic response for mitochondrial and microvascular maintenance. PGC1α was up-regulated in the early phage in Hx and Alk1+/− PH models with microvascular angiogenetic change, whereas Sugen/Hx-model did not increase PGC1α expression and did not show microvascular remodeling. Furthermore pulmonary ECs-specific PGC1α-deficient mice exacerbated Hx-PH model with decreased VEGF expression and microvessel density, and administration of Baicalin, a flavonoid enhancing PGC1α expression, ameliorated Hx-PH model with increased VEGF expression. Conclusions The 3D visualization system disclosed an unexpected change of angiogenic microvascular structure in the early phage of PH, which is regulated by EC PGC1α. Microvascular angiogenesis which is induced by up-regulation in PGC1α -VEGF pathway is a crucial factor for compensation of PH in the early phase, which provides a potential novel therapeutic target for PH. Figure 1 Funding Acknowledgement Type of funding source: Public grant(s) – National budget only. Main funding source(s): JSJP

VESTA 3for three-dimensional visualization of crystal, volumetric and morphology data

2011 ◽  
Vol 44 (6) ◽  
pp. 1272-1276 ◽  
Author(s):  
Koichi Momma ◽  
Fujio Izumi
Keyword(s):  
Search Algorithm ◽  
Voronoi Tessellation ◽  
Three Dimensional ◽  
Structure Parameters ◽  
Volumetric Data ◽  
Complex Molecules ◽  
Visualization System ◽  
Performance Improvements ◽  
Significant Performance

VESTAis a three-dimensional visualization system for crystallographic studies and electronic state calculations. It has been upgraded to the latest version,VESTA 3, implementing new features including drawing the external morphology of crystals; superimposing multiple structural models, volumetric data and crystal faces; calculation of electron and nuclear densities from structure parameters; calculation of Patterson functions from structure parameters or volumetric data; integration of electron and nuclear densities by Voronoi tessellation; visualization of isosurfaces with multiple levels; determination of the best plane for selected atoms; an extended bond-search algorithm to enable more sophisticated searches in complex molecules and cage-like structures; undo and redo in graphical user interface operations; and significant performance improvements in rendering isosurfaces and calculating slices.

A System for Three-Dimensional Visualization of Human Jaw Motion in Speech

1997 ◽  
Vol 40 (5) ◽  
pp. 1118-1121 ◽  
Author(s):  
Thierry Guiard-Marigny ◽  
David J. Ostry
Keyword(s):  
Degrees Of Freedom ◽  
Three Dimensional ◽  
Visual Display ◽  
Visual Speech ◽  
Skeletal Structure ◽  
Visualization System ◽  
Motion Data ◽  
Visual Speech Recognition ◽  
Visualization Software ◽  
Audio Track

With the development of precise three-dimensional motion measurement systems and powerful computers for three-dimensional graphical visualization, it is possible to record and fully reconstruct human jaw motion. In this paper, we describe a visualization system for displaying three-dimensional jaw movements in speech. The system is designed to take as input jaw motion data obtained from one or multi-dimensional recording systems. In the present application, kinematic records of jaw motion were recorded using an optoelectronic measurement system (Optotrak). The corresponding speech signal was recorded using an analog input channel. The three orientation angles and three positions that describe the motion of the jaw as a rigid skeletal structure were derived from the empirical measurements. These six kinematic variables, which in mechanical terms account fully for jaw motion kinematics, act as inputs that drive a real-time three-dimensional animation of a skeletal jaw and upper skull. The visualization software enables the user to view jaw motion from any orientation and to change the viewpoint during the course of an utterance. Selected portions of an utterance may be replayed and the speed of the visual display may be varied. The user may also display, along with the audio track, individual kinematic degrees of freedom or several degrees of freedom in combination. The system is presently being used as an educational tool and for research into audio-visual speech recognition. Interested researchers may obtain the software and source code free of charge from the authors.

Cognitive workload, complications and visual outcomes of phacoemulsification cataract surgery: Three-dimensional versus conventional microscope

2021 ◽  
pp. 112067212110620
Author(s):  
Aditya Kelkar ◽  
Jai Kelkar ◽  
Yogesh Chougule ◽  
Mounika Bolisetty ◽  
Priyanka Singhvi
Keyword(s):  
Cataract Surgery ◽  
Three Dimensional ◽  
Posterior Chamber ◽  
Dimensional System ◽  
Cognitive Workload ◽  
Visualization System ◽  
Visual Outcomes ◽  
Conventional Microscope ◽  
Three Dimensional System ◽  
Phacoemulsification Cataract Surgery

Purpose To compare the surgical workload, complications, and visual outcomes using the three-dimensional visualization system with the conventional microscope in phacoemulsification cataract surgery. Design Prospective, non-randomized, open-label interventional study. Methods All patients underwent phacoemulsification cataract surgery using the three-dimensional visualization system or conventional microscope. Results Of the 203 eyes, 80 underwent surgery with the three-dimensional system while 123 underwent with the conventional microscope. No difference was noted in the total surgical duration, complication rates, and visual outcomes between the two groups. However, capsulorhexis was significantly faster using the conventional microscope while posterior chamber intraocular lens insertion was quicker using the three-dimensional system. In terms of cognitive workload comparison, no difference was seen in the surgeons’ heart rate, oxygen saturation levels, and surgery task load index total workload score and workload score for all six dimensions of the questionnaire, between the three-dimensional system and conventional microscope groups. As compared to baseline, the heart rate increased significantly during all surgical steps and at the end in both groups. When compared to baseline, the oxygen saturation levels were significantly raised during capsulorhexis, irrigation, and aspiration and posterior chamber intraocular lens insertion and at the end of the surgery in the three-dimensional group and during incision and at the end of the surgery in the conventional microscope group. Conclusions The duration of surgery, complications, and visual acuity outcomes remain unaffected while performing phacoemulsification cataract surgeries with the three-dimensional viewing system when compared to the conventional microscopes. Moreover, the surgeons’ cognitive workload too remains unaffected while utilizing this revolutionary three-dimensional surgical technology.

Nonaxisymmetric Convection in Stationary Gas Tungsten Arc Weld Pools

1997 ◽  
Vol 119 (1) ◽  
pp. 164-172 ◽  
Author(s):  
Y. Joshi ◽  
P. Dutta ◽  
P. E. Schupp ◽  
D. Espinosa
Keyword(s):  
Computational Study ◽  
Numerical Models ◽  
Three Dimensional ◽  
Pulsed Laser ◽  
Surface Flow ◽  
Rotational Flow ◽  
Visualization System ◽  
Gas Tungsten Arc ◽  
Laser Visualization ◽  
Weld Pools

Observations of surface flow patterns of steel and aluminum GTAW pools have been made using a pulsed laser visualization system. The weld pool convection is found to be three-dimensional, with the azimuthal circulation depending on the location of the clamp with respect to the torch. Oscillation of steel pools and undulating motion in aluminum weld pools are also observed even with steady process parameters. Current axisymmetric numerical models are unable to explain such phenomena. A three-dimensional computational study is carried out in this study to explain the rotational flow in aluminum weld pools.

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