Sessions, John

University Distinguished Professor
Strachan Chair of Forest Operations Management

Office Location: 
Peavy 223
Email Address: 
Curriculum Vitae: 

Registered Professional Civil Engineer: Washington

PhD, Forest Economics, 1979 Oregon State University
MS, Forest Engineering, 1971 University of Washington
MS, Civil Engineering, 1968 California State University
BS, Civil Engineering, 1966 University of California, Los Angeles

Current Programs: 

Developing techniques for transportation planning, tactical forest planning, strategic forest planning, decision support systems for road management, strategic planning on State forests, biomass collection and transport.

Graduate Students

Francisca Belart (PhD), Storm Beck (MS 2014 Graduate), Chad Gilbreath (MF), Ricardo Pavez (MS), Jared Christian (MS), Michael Berry (MF), Janna Loeppky (MS), Carla Portugal (PhD), Rodrigo Portugal (PhD)


    FE 449/549: Strategic and Tactical Forest Planning
    FE/FOR 456: International Forestry (team taught)
    FE 470/570: Logging Mechanics
    FE 499: Biomass Assessment, Harvesting and Transport (team taught)
    FE 552: Forest Transportation
    FE 572: Logging Vehicle Performance
    FE 640-001: Combinatorial Optimization in Forest Planning
    FE 640-002: Biomass Harvesting and Transport
    FOR 457/557: Techniques for Forest Resource Analysis
    FOR 459: Forest Resource Planning and Decision Making (team taught)

During Academic Year 2013-2014:

Summer and Fall Term 2013– Projects

  •     Biomass Production and Transport Planning
  •     Logging Vehicle Performance
  •     National Indian Forest Assessment
  •     NW Forests State Planning Support

Winter Term 2014
    FE 470/570: Logging Mechanics
    FE 640-001: Combinatorial Optimization
    FOR 457/557: Techniques for Forest Resource Analysis

Spring Term 2014  
    FE 449/549: Strategic and Tactical Forest Planning
    FE/FOR 456: International Forestry
    FE 552: Transportation Planning
    FOR 459: Forest Resource Planning and Decision Making

Recent Publications: 

Acuna, M. and J. Sessions. 2014. A simulated annealing algorithm to solve the log-truck scheduling problem.  In: Simulated Annealing: Strategies, Potential Uses and Advantages. NOVA Science. Chapter 8, pp. 191-220.

Zamora, R., P. Adams, and J. Sessions. 2014. Ground-based thinning on steep slopes in Western Oregon: Soil exposure and strength effects. In Press.  Available online February 6, 2014.  http://dx.doi.org/10.5849/forsci.12-525.  Forest Science.

Akay, A., M. G. Wing, and J. Sessions.  2014. Estimating sediment reduction cost for low-volume forest roads using a LiDAR-Derived High-Resolution DEM.  Baltic J. of Road and Bridge Engineering 9(1):52-57.

Lyons, K., J. Sessions, and J. Wimer. 2013.  The adequacy of falling object protection design criteria for feller bunchers.  (In press).  Forest Science.  Published online October 2013  (http://dx.doi.org/10.5849/forsci.12-110).    

Ghaffariyan, M. R., J. Sessions, and M. Brown.  2013.  Roadside chipping in a first thinning operation for radiata pine in South Australia.  Croation  J. of Forest Engineering 34(1):91-101.

Smith, D., J. Sessions, K. Tuers, D. Way and J. Travers.  2013. Characteristics of Forest Derived Woody Biomass Collected and Processed in Oregon.  Forest Products J.  62(7/8):520-527. 

Sessions, J., K. Tuers, K. Boston, R. Zamora and R. Anderson.  2013.  Pricing Forest Biomass for Power Generation.  Western J. of Applied Forestry 28(2):51-56.

Wing, M. G., M. Craven, J. Sessions, and J. Wimer. 2013. LiDAR-derived DEM and raw height comparisons along profile corridor gradients within a forest.  (In press).  Journal of Geographic Information System.  Published online April 2013 (http://www.scirp.org/journal/jgis).

Leu, Shao-Yuan, R. Gleisner, R., J.Y. Zhu, J. Sessions, and G. Marrs. 2013.  Robust Enzymatic Saccharification of a Douglas-fir forest harvest residue by SPORL.  Biomass and Bioenergy 59(2013):393-401.    

Zamora, R., J. Sessions, G. Murphy and K. Boston. 2013.  Economic impact of truck-machine interference in forest biomass recovery operations on steep terrain.  Forest Products Journal 63(56):162-173. 

Zamora, R., K. Boston, J. Sessions, and G. Murphy. 2013.  Stochastic simulation and optimization of mobile chipping economics in processing and transport of forest biomass from residues.  (Accepted).  Silva Fennica.

Hayati, E., B. Majnounian, E. Abdi, J. Sessions, and M. Makhdom.  2013.  An expert-based approach in forest road network planning by combining Delphi and Spatial Multi-Criteria Evaluation.  Environmental Modeling and Assessment 185(2):1767-1776.

Ghaffariyan, M.R., Sessions, J. and M. Brown. 2013. Road side chipping with Morbark chipper.  (Accepted).  Croatian Journal of Forest Engineering.

Wing, M. G., J. Burnett, and J. Sessions.  2013. Eyes in the sky: Remote sensing technology development using small unmanned aircraft systems.  J. of Forestry 111(5):341-347.

Beck, S. and J. Sessions. 2013. Forest road access decisions for woods chip trailers using Ant Colony Optimization and breakeven analysis.  Croation  J. of Forest Engineering 34(2)201-215.

Pilkerton, S.J., J. Sessions, and L.D. Kellogg. 2013. Development of efficient cutting patterns to maximize value with a log allocation constraint.  Int. J. of Forest Engineering, 24(1):42-52.

Wing, M. G., J. Burnett, and J. Sessions.  2013. Remote sensing and unmanned aerial system technology for monitoring and quantifying forest fire impacts.  In press.   Int. Journal of Remote Sensing. 

Akay, A., M. G. Wing, and J. Sessions.  2012. Estimating sediment reduction cost for forest road construction using a LiDAR-Derived High-Resolution DEM. In press.  Baltic J. of Road and Bridge Engineering.

Ghaffariyan, M. R., J. Sessions, and M. Brown.  2012.  Evaluating productivity, cost, chip quality and biomass recovery for a mobile chipper in Australian roadside chipping operations. J. of Forest Science 58(12): 530–535, Czech Academy of Agricultural Sciences.

Ghaffariyan, M. R., J. Sessions, and M. Brown.  2012. Machine productivity and residual harvesting residues associated with a cut-to-length harvest system in southern Tasmania.    Southern Forests 74(4): 229–235

Lyons, K., J. Sessions, and J. Wimer. 2012. Effect of undercut style and post hinge behavior in tree felling.  Forest Science 58(6):547-558.

Akay, A., M. G.Wing, and  J. Sessions. 2012. Estimating structural properties of riparian forests with airborne LiDAR data.  International J. of Remote Sensing 33(22):7010-7023.

Zhang, C., J. Y. Zhu, R. Gleisner, and J. Sessions. 2012.  Fractionation of forest residues of Douglas-fir for fermentable sugar production by SPORL Pretreatment.  J. of Bioenergy Res.  DOI 10.1007/s12155-012-9213-3.

Chung, W., D. Dykstra, S. O’Brien, R. Abt, and J. Sessions.  2012. User’s Guide to SNAP for  ArcGIS.  USDA Forest Service, PNW Station, Gen. Tech. Report. PNW-GTR-847. 

Recent Theses

Beck, Storm.  2014.  The Use Of LiDAR To Identify Forest Transportation Networks. MS. Oregon State University, 110 pp.

Zamora, Rene. 2013. Economic Optimization of Forest Biomass Processing and Treatment. PhD. Oregon State University, 196 pp.

Stander, Henk. 2011. Uncertainty, Risk Management on the Tillamook State Forest: A Case Study. PhD. Oregon State University, 346 pp.

Kokenge, Kyler. 2011. Opportunities and Challenges for Decision Support Systems in Log Truck Scheduling and Dispatching. MS. Oregon State University, 147 pp.

Schmidt, Christian. 2011. Spaitally-Explicit Prediction of Recoverable Harvesting Residues. MS. Oregon State University, 179 pp.

Simwanda, Matamyo. 2011. Modeling Biomass Transport on Single Lane Forest Roads and Monitoring GPS Accuracy for Vehicle Tracking Under Different Canopy Conditions. MS. Oregon State University, 153 pp.

Thompson, Matthew P. 2008. Contemporary Forest Road Management with Economic and Environmment Objectives. PhD. Oregon State University, 302 pp.