Publications

The following picture visualizes the most commonly used words in my publications:

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  • H. Zhang, J. Weng, & A. Hanson. A Pseudo-haptic Knot Diagram Interface. Proc. SPIE 7868, Visualization and Data Analysis 2011, 786807 (January 24, 2011. San Francisco, California. January 23, 2011.
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  • Y. El-Khamra, N. Gaffney, D. Walling, E. Wernert, W. Xu, H. Zhang. Performance Evaluation of R with Intel Xeon Phi Coprocessor. In Proceedings of the First Workshop on Benchmarks, Performance Optimization, and Emerging hardware of Big Data Systems and Applications (BPOE 2013), in conjunction with 2013 IEEE International Conference on Big Data (IEEE Big Data 2013). October 8, 2013, Silicon Valley, CA, USA.
  • H. Zhang, G. Ruan, H. Shen, M. Bolyes, H. Li, M. Ando. XSEDE-Enabled High-Throughput Lesion ActivityAssessment. In Proceedings of the Conference on Extreme Science and Engineering Discovery Environment: Gateway to Discovery(XSEDE '13). ACM, New York, NY, USA, Article 10.
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  • Visualizing the Dynamic Process of Artificial Caries Lesion in Human Enamel. This visualization presents data from a research study aimed at quantifying caries lesion activity in human enamel. Dental caries is an infectious, communicable disease which causes destruction of teeth but is detectable and reversible $ computational techniques to enable quantitative comparisons of digitally-imaged lesion activity over time. Specifically, this visualization renders the caries lesions from a portion of a single human tooth at five stages of the disease imaged ove$ lesions; (2) Day 5: Artificially demineralized (diseased) state with significant lesions; (3) Day 9: Initial remineralized (beginning-to-heal) state with reduced lesions; (4) Day 15: Subsequent remineralized (further healed) state with even less $ comparable to the baseline sound enamel state indicating a successful reversal of the artificially-induced caries activity. Play Video
  • Touching the 4D Torus.The 4D Torus is an example of using haptics to explore and visualize mathematical objects that exist outside of normal 3D space. In this video segment, a 4D dimensional torus (doughnut) is explored with haptics and graphics to allow researchers to feel objects that cannot be easily visualized. Play Video
  • Visual Computing of Large Dental Imaging Data for Investigative Caries Studies. This visualization presents 3-dimensional complete tooth (enamel, dentin and pulp) and volumetric caries lesion data corresponding to multiple threshold levels from a research study aimed at quantifying caries lesion activity in human enamel.Caries lesion activity assessment has been a routine diagnostic procedure in caries management, traditionally employing subjective measurements incorporating visual and tactile inspections. Recently, advances in 2D/3D image processing and analysis methods and microfocus x-ray computerized tomography (m-CT) hardware, along with increased power of high performance computing (HPC), have created a synergic effect that is revolutionizing the dental computing field. This visualization produces 3-dimensional complete tooth (enamel, dentin and pulp) models from m-CT data of 9 human tooth specimens, and renders the loss of mineral content at multiple threshold levels in each tooth specimen. Our visualization has seen early use in helping answer domain-specific questions such as quantitative assessment of dynamic carious lesion activities, visual representation of tooth mineral distributions, and the mapping and correlation of caries phenomena exhibited in volume and surface imaging data.Throughout this project and in preparation for this visualization, a combination of XSEDE and non-XSEDE resources were utilized. The majority of the computational time was spent extracting contours of various dental structures and identifying the cross-section of demineralized enamel. To ensure fast turnaround time of this task, large dental imaging data are processed and interested structures (e.g., geometries that represent dental crown, pulp and dentin surface) are extracted offline with MapReduce tasks deployed at Stampede cluster machine. The geometric models were imported into either ParaView where data and render servers (also hosted on Stampede) facilitated both interactive visual exploration (i.e. qualitative analysis) and quantitative analysis or Maya for the creation of non-interactive visualization and animation. XSEDE SciVis Showcase

Talks and Presentations

  • Presentation at SC'13 BOF on "Super-R: Supercomputing and R for Data Intensive Analytics"
  • Paper presentation at ACM XSEDE Conference 2013
  • Invited talk “Visually-based Information Technologies in STEM education” at College of I&ST, University of Nebraska at Omaha 2013
  • Paper presentation at SPIE VDA Conference 2013
  • Invited presentation “Imaging, Visualizing and Analyzing Caries Lesion Actitivity” at Eli Lilly & Company 2013
  • Invited talk “Computer Interfaces Transform Mathematical Studies” at Fujian Agriculture and Forestry Univesity, P.R.China 2012
  • Paper presentation at IEEE VisWeek/SciVis Conference 2012
  • Paper presentation at IEEE VisWeek/VAHC Workshop 2012
  • Paper presentation at XSEDE Conference 2012
  • Paper presentation at SPIE VDA 2011 Conference 2011
  • Keynote speech “Learning Through Multi-modal Interactions” at IEEE ICAIE Conference 2010
  • Paper presentation at ACM ICMI-MLMI Conference 2010
  • Paper presentation at IEEE ICDL Conference 2010
  • Paper presentation at IVA Conference 2010
  • Invited talk “Learning Through Multi-modal Interactions” at Fujian Agriculture and Forestry Univesity, P.R.China 2010
  • Paper presentation at IEEE Visualization Conference 2007
  • Paper presentation at ISVC Conference 2007
  • Invited talk “Visualizing the 4th Dimension: Interacting in Flatland” at IUCS Honors Seminar Paper
  • presentation at ISVC Conference 2006
  • Invited talk “Multimodal exploration of the 4th Dimension” in IUCS department technical talk2005
  • Paper presentation at IEEE Visualization Conference 2005
  • Paper presentation at ISVC Conference 2005
  • Paper presentation at ICYCS Conference 2001
  • Paper presentation at ICeCE Conference 2001