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Danel DraguljicAssociate Professor of Mathematics, Department Chair of Mathematics

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Biography

Associate Professor, Department of Mathematics, 顶级国产视频 & Marshall College, Lancaster, PA     2018-present

Assistant Professor, Department of Mathematics, 顶级国产视频 & Marshall College, Lancaster , PA    2012-2018

Statistician III, Battelle Memorial Institute, Columbus, OH    2010-2012

Education

Ph.D. in Statistics         The Ohio State University, Columbus, OH      2010

B.A. in Philosophy        Millersville University, Millersville, PA                2003

B.S. in Mathematics    Millersville University, Millersville, PA               2003

 

Course Information

Courses Taught Include
  • MAT 109: Calculus I (F12, F13)
  • MAT 110: Calculus II (F14, F16, S18)
  • MAT 215: Introduction to Statistical Modeling (many times since 2015)
  • MAT 216: Probability and Statistics I (many times since 2012)
  • MAT 316: Probability and Statistics II (many times since 2013)
  • MAT 370: Introduction to Statistical Learning (F14, S17, S20)
  • MAT 375: Time Series (S24)
  • MAT 416: Design and Analysis of Experiments (F16, F18, F20, F22, F24)
  • MAT 470: Neural Networks (S20, F23)

Books

  • Dean, A. M., Voss, D., and Draguljic, D., 鈥淒esign and Analysis of Experiments鈥� 2nd Ed., Springer- Verlag, Berlin-Heidelberg-New York. (2017).
    • For R and SAS programs, data sets, etc., click

Publications

  • Vaughan, D., Williams, C. B., Nadkarni, N., Dawson, T. E., Dragulji膰, D., N忙sborg, R. R., and Gotsch, S. G., 鈥淒rought response strategies of vascular epiphytes in isolated pasture trees in a Costa Rican tropical montane landscape鈥�, American Journal of Botany, Vol. 11, Issue 10, 2024. ()
  • Iba帽ez, S., Luebke, J. I., Chang, W., Draguljic, D., and Weaver, C. W., 鈥淣etwork models predict that pyramidal neuron hyperexcitability and synapse loss in the dlPFC lead to age-related spatial working memory impairment in rhesus monkeys鈥�, Frontiers in Computational Neuroscience, Vol. 13, 2020.
  • Dicklitch-Nelson, S., Thompson Buckland, S., Yost, B. and Draguljic, D., 鈥淔rom persecutors to protectors: Human rights and the F&M global barometer of gay rights (GBGR)鈥�, Journal of Human Rights, Vol. 18, Iss. 1, pp. 1-18, 2019.
  • Gotsch, S. G., Dawson, T. E., and Draguljic, D., 鈥淰ariation in the resilience of cloud forest vascular epiphytes to severe drought鈥�, New Phytologist, Vol. 219, Iss. 3, pp. 900-913, 2018.
  • Gotsch, S. G., Draguljic, D., and Williams, C. J., 鈥淓valuating the effectiveness of urban trees to mitigate stormwater runoff via transpiration and stemflow", Urban Ecosystems, Vol. 21, Iss. 1, pp. 183-195, 2018.
  • Gotsch, S. G., Davidson, K., Murray, J., Duarte, V., and Draguljic, D., 鈥淓piphyte abundance predicts vapor pressure deficit across an elevational gradient in a tropical montane region鈥�,  American Journal of Botany, Vol. 104, Iss. 12, pp. 1790-1801, 2017.
  • Rumbell, T. H., Dragulji膰, D., Yadav, A., Hof, P. R., Luebke, J. I. and Weaver, C. M., 鈥淎utomated evolutionary optimization of ion channel conductances and kinetics in models of young and aged rhesus monkey pyramidal neurons鈥�, J. of Computational Neuroscience, Vol. 41, Iss. 1, pp. 65-90, 2016.
  • Darby, A., Draguljic, D., Glunk, A., and Gotsch, S. G., 鈥淗abitat moisture is an important driver of patterns of sap flow and water balance in tropical montane cloud forest epiphytes鈥�, Oecologia, Vol. 182, Iss. 2, pp. 357-371, 2016.
  • Draguljic, D., Nekkanty, S., Dean, A. M., Santner, T. J. and Shivpuri, R., 鈥淥ptimizing thin film tool coatings using a finite element computer simulator鈥�, Quality Engineering, Vol. 27, Iss. 4, pp. 461-472, 2015.
  • Draguljic, D., Woods, D. C., Dean, A. M., Lewis, S. M. and Vine, A. E., 鈥淪creening strategies in the presence of interactions鈥�, Technometrics, Vol. 56, Iss. 1, pp. 1-28, 2014.
    • With discussion from C. M. Anderson-Cook, M. S. Hamada, W. A. Brenneman, W. Li, J. Zhu, P. R. Scinto, R. G. Wilkinson, Z. Wang, and A. Rose. 
    • Awarded 2015 Youden Award for best expository paper appearing in the 2014 issues of Technometrics. 
  • Draguljic, D., Dean, A. M. and Santner, T. J., 鈥淣oncollapsing Space-Filling Designs for Bounded Nonrectangular Regions鈥�, Technometrics, Vol. 54, pp. 169-178, 2012.
  • Carlton, M., Gillespie, R., Garver, J., Draguljic, D. and Vela, E. M., 鈥淭he Syrian golden hamster as a model study to Flexal virus pathogenesis鈥�, Archives of Clinical Microbiology, Vol. 3, No. 2:2, 2012.
  • Georgiou, S. D., Draguljic, D. and Dean, A. M., 鈥淎n overview of two-level supersaturated designs with cyclic structure鈥�, Journal of Statistical Theory and Practice, Vol. 3, pp. 489-504, 2009.

Software

Model Selection
ChengCheng Zhai '18, Hackman Scholar, and I are developing R software that performs variable selection in mixed models. The variable selection is performed with respect to fixed terms while preserving effect hierarchy (these include main effects, interactions between main effects, and polynomial terms).
  • The current R package can be downloaded below. Before you install the package in R, please remove the .txt extension.
An example and a very brief description of the features can be found here.

CoNcaD

I developed R software to implement CoNcaD algorithm from Draguljic, Dean, and Santner (2012). The algorithm constructs constrained noncollapsing designs suitable for computer experiments.

  • The R package can be downloaded below. Before you install the R package, please remove the .txt extension.
CONCAD DOWNLOAD
  • An example of how to install the package and use the code can be found here.