Computer simulation analysis of source-detector position for percutaneously measured O2
-gas signal in a three-dimensional preterm infant lung

Background: Anterior inferior iliac spine (AIIS) impingement is an important risk factor for revision hip arthroscopy. Although a morphological classification system is available, evaluating AIIS impingement with respect to joint kinematics remains a challenge. Purpose: To use computer simulation analysis to ascertain the prevalence of AIIS impingement before and after osteochondroplasty. Methods: A total of 35 joints from 30 cases (20 males and 10 females; average age: 43.3 ± 13.7 years) were analyzed. All joints had cam morphology and underwent hip arthroscopic osteochondroplasty. A three-dimensional model of each joint was constructed pre- and postoperatively. Joint kinematic simulation software (ZedHip®, Lexi, Tokyo) was used to identify the impingement point on the acetabular side and the incidence (expressed as a percentage) of AIIS impingement calculated. Radiographic and clinical evaluation was performed pre- and postoperatively. Results: AIIS impingement was observed postoperatively in six joints but preoperatively in only one joint. The rate of AIIS postoperative impingement was significantly higher than that of preoperative impingement. All impingement points were located on the inferior aspect of the AIIS apex. However, there were no significant differences between the AIIS impingement and non-impingement groups in terms of clinical outcome. Conclusion: The incidence of AIIS impingement after osteochondroplasty was 17% by computer simulation analysis. Osteochondroplasty may result in subsequent AIIS impingement.

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Three-dimensional simulation analysis of electric field distribution at the middle joint of 110 kV cable with typical defects

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/647/1/012034 ◽

2021 ◽

Vol 647 ◽

pp. 012034

Author(s):

Siqin Xu ◽

Xiangqian Huang ◽

Song Yang ◽

Bin Yu ◽

Pengfei Gan

Keyword(s):

Electric Field ◽

Field Distribution ◽

Electric Field Distribution ◽

Simulation Analysis ◽

Three Dimensional ◽

Dimensional Simulation

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Computer Simulation Analysis of Light Vehicle Lateral/Directional Dynamic Stability

10.4271/1999-01-0124 ◽

1999 ◽

Cited By ~ 12

Author(s):

R. Wade Allen ◽

Theodore J. Rosenthal ◽

David H. Klyde ◽

Jeffrey R. Hogue

Keyword(s):

Computer Simulation ◽

Dynamic Stability ◽

Simulation Analysis ◽

Light Vehicle

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Three-dimensional predator–prey interactions: a computer simulation of bird flocks and aircraft

Canadian Journal of Zoology ◽

10.1139/z86-381 ◽

1986 ◽

Vol 64 (11) ◽

pp. 2624-2633 ◽

Cited By ~ 1

Author(s):

Peter F. Major ◽

Lawrence M. Dill ◽

David M. Eaves

Keyword(s):

Computer Simulation ◽

Prey Species ◽

Three Dimensional ◽

Aircraft Engine ◽

Aquatic Environments ◽

Aircraft Engines ◽

Predator Prey ◽

Simulation Techniques ◽

Computer Simulation Techniques ◽

Individual Prey

Three-dimensional interactions between grouped aerial predators (frontal discs of aircraft engines), either linearly arrayed or clustered, and flocks of small birds were studied using interactive computer simulation techniques. Each predator modelled was orders of magnitude larger than an individual prey, but the prey flock was larger than each predator. Expected numbers of individual prey captured from flocks were determined for various predator speeds and trajectories, flock–predator initial distances and angles, and flock sizes, shapes, densities, trajectories, and speeds. Generally, larger predators and clustered predators caught more prey. The simulation techniques employed in this study may also prove useful in studies of predator–prey interactions between schools or swarms of small aquatic prey species and their much larger vertebrate predators, such as mysticete cetaceans.The study also provides a method to study problems associated with turbine aircraft engine damage caused by the ingestion of small flocking birds, as well as net sampling of organisms in open aquatic environments.

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Simulation Analysis of Pneumatic on-off Pressure Mechanism on Printing Press

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.154-155.1481 ◽

2010 ◽

Vol 154-155 ◽

pp. 1481-1484 ◽

Cited By ~ 1

Author(s):

Jun Zhong Guo ◽

Jun Ping Yang

Keyword(s):

Kinematic Analysis ◽

Simulation Analysis ◽

Angular Displacement ◽

Three Dimensional ◽

Printing Press ◽

Work Demand ◽

Analysis Process ◽

Adams Software ◽

Important Basis

The on-off pressure mechanism has an important function to the printing press, the quality of which concerns the working performance of the printing machine and the quality of printed products directly. In this paper, the pneumatic on-off pressure mechanism is discussed; the work demand of order on-off pressure is analyzed. In addition, the three-dimensional digital model and the kinematic analysis process can be achieved on the basis of ADAMS software. What’s more, the on pressure value in the process of on pressure is derived from the kinematic analysis. Lastly, the relation between the motion of on-off pressure mechanism and cylinder’s angular displacement is analyzed, an important basis to the on-off pressure mechanism’s optimal design will be provided.

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Study on Feed Offset in Elliptical Vibration Cutting

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.490-491.600 ◽

2014 ◽

Vol 490-491 ◽

pp. 600-606

Author(s):

Jie Qiong Lin ◽

Jin Guo Han ◽

Dan Jing ◽

Xian Jing

Keyword(s):

Surface Topography ◽

Surface Quality ◽

Simulation Analysis ◽

Three Dimensional ◽

Curved Surface ◽

Elliptical Vibration Cutting ◽

Vibration Cutting ◽

Elliptical Vibration ◽

Tool Edge

Elliptical vibration cutting (EVC) process and three dimensional cutting surfaces are analyzed in this paper to understand the formation of surface topography. The model of EVC surface topography is established based on curved surface remove function under the assumption that the tool edge is sharp enough. And simulation analysis of surface topography is conducted with different feed offset ratios. Results indicate that RMS change with feed offset ratios λ. The range of RMS is larger when feed offset ratio ranges from both 0 to 0.4 and 0.6 to 1, while the range is smaller when feed offset ratio changes from 0.4 to 0.6. Whats more, RMS reaches the minimum when feed offset ratio is 0.5. The present research provides some references for reducing the height of vibration ripples and improving EVC surface quality.

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