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Welcome to Nathan Cruze's Webpage!

Nate Portrait
Graduate Research Associate

Department of Statistics

Office: 304C Cockins Hall

E-mail: nbc<at>stat.osu.edu

About Me

I am currently in my fourth year of graduate study here at Ohio State University.  I am pursuing a Ph.D. in Economic and Engineering Analysis of Biocomplex Systems.  This one-of-a-kind degree program has emerged from graduate studies in economics and statistics in conjunction with my research with Dr. Bakshi's PSE Group.   To learn more about the motivation and content of my studies, be sure to read my statement below.


What's New

My current work revolves around the study of statistical properties of life cycle inventory (LCI) models which often combine economic input-output data with more specific engineering process data.  I am particularly interested in characterizing the discrepancies that arise when different inventory models (e.g. process-sum LCI, EIOLCI, tiered-hybrid LCI) are applied to the same network.  These discrepancies are due in part to the degree of aggregation present in the input-output data, selection of process LCI boundary, and producer price variability.  With assumptions about these sources of variability, I am exploring the distributional properties of the vector of residuals (life cycle emissions and natural resource consumption) associated with each inventory method.  This may yield some insight into the importance of boundary selection and enhance inventory results in terms of accuracy and reproducibilty.  I am applying this framework to a case study for coal-fired electricity generation.

In the near future I hope to extend these results to data at the many spatial and temporal scales encountered throughout a material's life cycle with the goal of establishing a link between social and economic policies and the outputs of these engineering models.


Some Relevant Links

Ohio State University
Life Cycle Inventory and Life Cycle Assessment
U.S. Government and Statistical Agencies
Just Some Personal Favorites

Statement of Purpose, My Resume

Additional Readings (updated periodically) -- This is just a short list of readings about the interdisciplinary approaches in engineering and the social sciences and in complex systems modeling.  My interests have been tied closely to materials production and use, but a number of other needs and applications for such interdisciplinary approaches have been identified in the references below.

  1. R.C. Larson, Service science: At the intersection of management, social and engineering sciences, IBM Systems Journal, 47 (2008), pp. 41-52.

Thank You
I'd like to express my gratitude to the faculty in the Graduate School, the Department of Chemical and Biomolecular Engineering, and the Department of Agricultural, Environmental and Development Economics for their support and enthusiasm.  Special thanks belongs to the faculty and staff in the Department of Statistics for providing me a home.