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Danel DraguljicAssociate Professor of Mathematics, Department Chair of Mathematics

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Biography

Associate Professor, Department of Mathematics, Franklin & Marshall College, Lancaster, PA     2018-present

Assistant Professor, Department of Mathematics, Franklin & 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., “Design and Analysis of Experiments” 2nd Ed., Springer- Verlag, Berlin-Heidelberg-New York. (2017). (link)
    • For R and SAS programs, data sets, etc., click here.

Publications

  • Vaughan, D., Williams, C. B., Nadkarni, N., Dawson, T. E., Draguljić, D., Næsborg, R. R., and Gotsch, S. G., “Drought response strategies of vascular epiphytes in isolated pasture trees in a Costa Rican tropical montane landscape”, American Journal of Botany, Vol. 11, Issue 10, 2024. (link)
  • Ibañez, S., Luebke, J. I., Chang, W., Draguljic, D., and Weaver, C. W., “Network models predict that pyramidal neuron hyperexcitability and synapse loss in the dlPFC lead to age-related spatial working memory impairment in rhesus monkeys”, Frontiers in Computational Neuroscience, Vol. 13, 2020. (link)
  • Dicklitch-Nelson, S., Thompson Buckland, S., Yost, B. and Draguljic, D., “From persecutors to protectors: Human rights and the F&M global barometer of gay rights (GBGR)”, Journal of Human Rights, Vol. 18, Iss. 1, pp. 1-18, 2019. (link)
  • Gotsch, S. G., Dawson, T. E., and Draguljic, D., “Variation in the resilience of cloud forest vascular epiphytes to severe drought”, New Phytologist, Vol. 219, Iss. 3, pp. 900-913, 2018. (link)
  • Gotsch, S. G., Draguljic, D., and Williams, C. J., “Evaluating the effectiveness of urban trees to mitigate stormwater runoff via transpiration and stemflow", Urban Ecosystems, Vol. 21, Iss. 1, pp. 183-195, 2018. (link)
  • Gotsch, S. G., Davidson, K., Murray, J., Duarte, V., and Draguljic, D., “Epiphyte abundance predicts vapor pressure deficit across an elevational gradient in a tropical montane region”,  American Journal of Botany, Vol. 104, Iss. 12, pp. 1790-1801, 2017. (link)
  • Rumbell, T. H., Draguljić, D., Yadav, A., Hof, P. R., Luebke, J. I. and Weaver, C. M., “Automated evolutionary optimization of ion channel conductances and kinetics in models of young and aged rhesus monkey pyramidal neurons”, J. of Computational Neuroscience, Vol. 41, Iss. 1, pp. 65-90, 2016. (link)
  • Darby, A., Draguljic, D., Glunk, A., and Gotsch, S. G., “Habitat moisture is an important driver of patterns of sap flow and water balance in tropical montane cloud forest epiphytes”, Oecologia, Vol. 182, Iss. 2, pp. 357-371, 2016. (link)
  • Draguljic, D., Nekkanty, S., Dean, A. M., Santner, T. J. and Shivpuri, R., “Optimizing thin film tool coatings using a finite element computer simulator”, Quality Engineering, Vol. 27, Iss. 4, pp. 461-472, 2015. (link)
  • Draguljic, D., Woods, D. C., Dean, A. M., Lewis, S. M. and Vine, A. E., “Screening strategies in the presence of interactions”, Technometrics, Vol. 56, Iss. 1, pp. 1-28, 2014. (link)
    • 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., “Noncollapsing Space-Filling Designs for Bounded Nonrectangular Regions”, Technometrics, Vol. 54, pp. 169-178, 2012. (link)
  • Carlton, M., Gillespie, R., Garver, J., Draguljic, D. and Vela, E. M., “The Syrian golden hamster as a model study to Flexal virus pathogenesis”, Archives of Clinical Microbiology, Vol. 3, No. 2:2, 2012. (link)
  • Georgiou, S. D., Draguljic, D. and Dean, A. M., “An overview of two-level supersaturated designs with cyclic structure”, Journal of Statistical Theory and Practice, Vol. 3, pp. 489-504, 2009. (link)

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.