Study of Sibling relative (SRR) risk is very important issue in genetics. The data of SRR generated based on various mathematical models of statistics have multi-independent variables. The visualization is very useful in helping researchers interpret and understand data. This project is to convert computed data and display in multi-dimensional graphics. In the present study, we selected SSR as 2, and allowed DGF vary from 0 to 1. The first disease alleles (FDA), the second disease alleles (SDA), and the third disease alleles (TDA) vary from 0 to 1, respectively; The computation also allows to use various model and hereby, we choose using quadratic model of population risk and Sibling relative risk. The data are converted to SGI’s Open Inventor format and use IVView (SGI) to display each image. This way, we can make a slide for each specific value of disease gene frequency (DGF); then integrated each image together, using QuickTime.. The present work explore and demonstrate the feature of using scientific visualization technology, an important tool, in analyzing multi-dimensional and biostatistic data in genetics.
The 3D simulation and visualization was created
by Dr. Jun Ni and Dr. Mark Logue on SGI Octane at the Information Services
Technology of the University of Iowa, 2002. (click
here for movie)
3D graphic visualization of computation using meshless method, which is very powerful computational methodology for large deformation mechanical system. The model and computation was performed by Prof. J.S. Chen's research group. The data were converted to SGI Open Inventor(iv format) file using a C code, designed and programmed by Dr. Jun Ni. The visualization was conducted to create image and movie files of QuickTime made by Dr. Jun Ni. Demonstration of application cases are included hereby, the 2D visualization shows the shear band clearly and can be used to improve the design of shovels, and the 3D visualization shows the motion of large displacement, 2000, Information Technology Services, The University of Iowa.
- 2-D shovels
- 2-D lifting
- 3-D back view of shovel
- 3-D front view of shovel
- 3-D half view of cylinder large displacement
- 3-D full view of cylinder large displacement
on ImmersiveDesk using CaveLib and OpenGL, The CT image data was obtained by dr. John Haller, and immersive data were converted by Dr. Jun Ni, Advanced Research Computing Services, Information Technology Services, The University of Iowa, 1998
Computational Modeling of Complex Biological Phenomena on SGI: Molecular structures produced by Gaussian software. The 3D structure is visualized using Molden and data form is in VRML and CAVE Lib for immersive virtual reality; produced by Dr. Jan Jensen, Dr. Jun Ni, and Judy Brown , Advanced Research Computing Services, Information Technology Services, The University of Iowa, 1998
Freckle formation during solidification: Freckle formation in transport phenomena of solidification of alloys was studied by Dr. Jian Ping Gu and Dr. C. Beckermann. Due to thermal and solutal double diffusion, as well as segregation during phase change, the freckles form, which effects the final microstructure of metal formation. Data were obtained from a computation on the SGI Power Challenge (Silicon). Visualization was created by Dr. Jun Ni, using Transform and Debabelizer. Movie (Quick Time, 6.5MB).
3D rendering and animation for computer-aided design and computational fluid dynamics of a hydraulic coupling. Numerical simulation of a velocity field, with particle tracing along the mean stream within the coupling chamber. The computation was performed on an Encore by Jun Ni and C. Fan, using Simpler algorithm based CFD code. Visualization was created by John Knaack and Jun Ni, using Alias graphic software on an IBM RS/6000 workstation. Movie (mpg,136K), Advanced Research Computing Services, ITS, The University of Iowa, 1994.
Solidification of Metal Alloys Simulation of Equiaxed Solidification of an Al-4%Cu Alloy (jpg, 41K) using a two-phase solidification model, implemented in CHAM PHOENICS CFD code, and performed on IBM3090. Image was created on Mac using Spyglass/Transform. The simulation was designed and conducted by Dr. Jun Ni and Dr. C. Beckermann. The animation of this simulation can be displayed by clicking Movie (mpeg, 40K). Advanced Research Computing Services, ITS, The University of Iowa, 1992.
Sedimentation of Rocks in Magmatic Processing, supported by NSF, studied by Drs. Jun Ni and George Bergantz, using a two-phase model of transport phenomena during magmatic processing, and implemented in CHAM PHOENICS CFD code on a DEC/Alpha workstation. Images were created by Dr. Jun Ni on a PowerMac using the Spyglass packages. The animation of the simulation at the early stage can be displayed by clicking Movie (mov, 2170K). and the animation of the simulation at the later stage is displayed by clicking Movie (mpg, 2M), Advanced Research Computing Services, ITS, The University of Iowa, 1996.
Vocal fold movement: Numerical simulation of vocal fold movement. The simulation was performed on a Cray Y-MP at NCSA by Fari Alipour using Fidap FEM coding. Visualization was done by John Knaack and Dr. Jun Ni, using AVS software on a DEC Station 5000. The animation of this simulation is displayed by clicking here, Advanced Research Computing Services, Weeg Computing Center, The University of Iowa, 1992.
Advanced
Research Computing Services Professionals Pictures
(Left to right: Jun Ni, Judy Brown, Diane Eglseder, and Barbara Zilles),
Advanced Research Computing
Services, Information Technology Services, The University of Iowa, 2000.
ARCS Formal Graduate Students (1994-2000):
Dr. Tom Halverson, Currently Professor Dean of
Information Science, at South Dakota State University
Dr. Esmail Bonakdarian, UNiversity of
Dr. Eric Van Wyk, Professor in Department of Computer Science, University
of Minnesota
Shaowen Wang
James Hunsaker