@inbook{lee_kim_mcgraw_2006, title={Performance evaluation of bituminous surface treatment using third-scale Model Mobile Loading Simulator}, DOI={10.3141/1958-07}, abstractNote={This paper presents a new test protocol for the performance evaluation of bituminous surface treatments (BSTs) using the third-scale Model Mobile Loading Simulator (MMLS3). The BST performance characteristics covered by this protocol include aggregate retention, bleeding, skid resistance, aggregate embedment depth, cracking, and rutting. In this study, the new MMLS3 BST performance test method was applied to evaluate effects of various mix parameters on aggregate retention and bleeding; these parameters include aggregate and emulsion application rates, fines content, and aggregate gradation. Results demonstrate that the BST performance test method developed in this study is an excellent means of supporting current BST design and evaluating effects of various factors on performance of BSTs.}, number={1958}, booktitle={Managing and maintaining highway structures and pavements}, publisher={Washington: Transportation Research Board Natl Research Council}, author={Lee, J. and Kim, Y. R. and McGraw, E. O.}, year={2006}, pages={59–70} }
 @article{lee_lorenc_bernold_1999, title={Saving lives and money with robotic trenching and pipe installation}, volume={12}, DOI={10.1061/(ASCE)0893-1321(1999)12:2(43)}, abstractNote={Excavation, and in particular trenching and pipe laying, represent a hazardous working environment for humans. Many hazards exist, including trench walls that can collapse, heavy objects that can be accidentally dropped into the opening, and buried utilities (e.g., power lines) that are damaged during the operation. Workplace safety has become a major concern in the construction industry over the past few decades. The main accident prevention efforts used for trench excavation and pipe installation today are the use of the trench box, appropriate sloping of trench walls, and the training of site personnel. The Construction Automation and Robotics Laboratory at North Carolina State University has developed an alternative that is using advanced technology, the prototype robotic excavation and pipe installation system. The major mechanical components are a backhoe excavator and a pipe manipulator attachment. Joystick control of hydraulic actuators, data acquisition/processing, CAD interface, and automatic as...}, number={2}, journal={Journal of Aerospace Engineering}, author={Lee, J. and Lorenc, S. J. and Bernold, L. E.}, year={1999}, pages={43–49} }
 @inproceedings{lee_lorenc_bernold_1998, title={Teleoperated pipe manipulation}, booktitle={Robotics 98: Proceedings of the Third ASCE Specialty Conference on Robotics for Challenging Environments,  April 26-30, 1998,  Albuquerque, New Mexico}, publisher={Reston, Va.: American Society of Civil Engineers}, author={Lee, J. and Lorenc, S. J. and Bernold, L. E.}, editor={L. A. Demsetz, R. H. Bryne and Wetzel, J. P.Editors}, year={1998}, pages={188–194} }