Active Projects:

• Non-intrusive Elderly Smart-home Healthcare System for Monitoring Short-term and Long-term Anomaly in Daily Activity Patterns (funded by Korea Agency for Infrastructure Technology Advancement)
• Revealing Hidden Safety Hazard based on Workers Collective Behavior Patterns (funded by NSF)
• Ergonomic back injury risk factors in construction glass and glazing work (funded by CPWR)

 2018

• Rafsanjani, H.N., Ahn, C.R., and Chen, J. (2018) "Linking building energy consumption with occupants’ energy-consuming behaviors in commercial buildings: Non-intrusive occupant load monitoring (NIOLM)." Energy and Buildings, Elsevier, Vol. 172, pp. 317-327.

• Rafsanjani, H.N. , Ahn, C. R., and Eskridge, K. (2018) "Understanding the recurring patterns of occupants'energy-use behaviors at entry and departure events in office buildings." Building and Environment, Elsevier, Vol. 136, pp. 77-87.

  2017

• Kim, H., Ahn, C. R., Engelhaupt, D., & Lee, S. (2018). "Application of dynamic time warping to the recognition of mixed equipment activities in cycle time measurement." Automation in Construction, 87, 225-234.

• Kim, H., Ahn, C. R., Stentz, T. L., & Jebelli, H. (2018). "Assessing the effects of slippery steel beam coatings to ironworkers' gait stability." Applied ergonomics, 68, 72-79.

• Yang, K., Ahn, C.R., Vuran, C. M., and Kim, H. (2017)."Collective Sensing of Workers' Gait Patterns to Identify Fall Hazards in Construction." Automation in Construction, Elsevier Vol. 82, pp. 166-178.

• Chen, J., Qiu, J., and Ahn, C.R. (2017)."Automated Construction Awkward Posture Recognition through Supervised Motion Tensor Decomposition ." Automation in Construction, Elsevier, Vol. 77, pp. 67–81.

  2016

• Kim, H., Ahn, C.R., and Yang, K. (2016)."A People-Centric Sensing Approach to Detecting Sidewalk Defects." Advanced Engineering Informatics, Elsevier, Vol. 30, No. 4, pp. 660-671.

• Kim, H., Ahn, C.R., and Yang, K. (2016). "Identifying Safety Hazards Using Collective Bodily Response of Workers." Journal of Construction Engineering and Management, 10.1061/(ASCE)CO.1943-7862.0001220 , 04016090. (Selected as Editor's Choice; Top 10 Most Read Paper)

• Yang, K., Ahn, C.R., Vuran, C. M., and Aria, S. (2016). “Semi-Supervised Near-Miss Fall Detection for Ironworkers with a Wearable Inertial Measurement Unit.”Automation in Construction, Elsevier, Vol. 68, pp. 194 - 202.

• Jebelli, H., Ahn, C. R., and Stentz, T. (2016). "Fall Risk Analysis of Construction Workers Using Inertial Measurement Units: Validating the Usefulness of the Postural Stability Metrics in Construction." Safety Science, Elsevier, Vol. 84, pp. 161 - 170.

  2015

• Rafsanjani, H.N. , Ahn, C. R., and Alahmad, M. (2015) "A Review of Approaches for Sensing, Understanding, and Improving Occupancy-Related Energy-Use Behaviors in Commercial Buildings." Energies, MDPI, Vol. 8, No. 10, 10996-11029. (Invited Review Paper – Special Issue on Energy Conservation in Infrastructures).

• Jebelli, H., Ahn, C. R., and Stentz, T. L. (2015) "Comprehensive Fall-Risk Assessment of Construction Workers Using Inertial Measurement Units: Validation of the Gait-Stability Metric to Assess the Fall Risk of Iron Workers." Journal of Computing in Civil Engineering, 10.1061/(ASCE)CP.1943-5487.0000511, 04015034.

• Kim, H., Lee, H.S., Park, M., Ahn, C.R., and Hwang, S. (2015) “Productivity Forecasting of Newly Added Workers Based on Time-Series Analysis and Site Learning.” Journal of Construction Engineering and Management, ASCE, Reston, VA, Vol. 141, No. 9, 05015008.

• Ahn, C. R., Lee, S., and Peña-Mora, F. (2015) “The Application of Low-Cost Accelerometers for Measuring the Operational Efficiency of a Construction Equipment Fleet.” Journal of Computing in Civil Engineering, ASCE, Reston, VA, Vol. 29, No. 2, 04014042.

  2014 & Older

• Chen, J., and Ahn, C. R. (2014) “Assessing Occupants’ Energy Load Variation through Existing Wireless Network Infrastructure in Commercial and Educational Building.” Energy and Buildings, Elsevier, Vol. 82, pp. 540-549.

• Ahn, C. R., Lewis, P., Golparvar, M., and Lee, S. (2013) “Integrated Framework for Estimating, Benchmarking and Monitoring the Environmental Impacts of Construction Operations.” Journal of Construction Engineering and Management, ASCE, Reston, VA, Vol. 139, No. 12, A4013003.

• Liu, C., Ahn, C. R., An, X., and Lee, S. (2013) “Life Cycle Assessment of Concrete Dam Construction: Comparison of Environmental Impacts Between Rock-Filled and Conventional Concrete.” Journal of Construction Engineering and Management, ASCE, Reston, VA, Vol. 139, No. 12, A4013009.

• Ahn, C. R., and Lee, S. (2013). “Importance of Operational Efficiency to Achieve Energy Efficiency and Exhaust Emission Reduction of Construction Operations.”Journal of Construction Engineering and Management, ASCE, Reston, VA, Vol. 139, No. 4, pp. 404 – 413.**

• Ahn, C., Peña-Mora, F., Lee, S., and Arboleda, C. (2013). “Consideration of the Environmental Cost in Construction Contracting for Public Works: A+C and A+B+C bidding methods.” Journal of Management in Engineering, ASCE, Reston, VA, Vol. 29, No. 1, pp. 86 – 94.

• Park, M., Jang, Y., Lee, H.S., Ahn, C. and Yoon, Y. S. (2013). “Application of Knowledge Management Technologies in Korean Small and Medium-sized Companies.” KSCE journal of Civil Engineering, Korean Society of Civil Engineers (KSCE), Seoul, Korea, Vol. 17, No. 1, pp. 22 – 32.

• Ahn, C., Lee, S., Peña-Mora, F., and Abourizk, S. (2010). "Toward Environmentally Sustainable Construction Processes: The U.S. and Canada’s Perspective on Energy Consumption and GHG/CAP Emissions.” Sustainability, Molecular Diversity Preservation International (MDPI), Basel, Switzerland, Vol. 2, No. 1, pp. 354-370 (Invited Review Paper – Special Issue on Environmental Sustainability and the Built Environment).