Browsing by Author "Robert Abt, Member"
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- A Comparative Economic Assessment of Silvopasture Systems in the Amazonas Region of Peru and in North Carolina, USA.(2018-03-16) Chizmar, Stephanie Jo; Erin Sills, Chair; Robert Abt, Member; Miguel Castillo, Member; Frederick Cubbage, Minor
- Applications of Spatial Price Transmission Analysis in the U.S. Forest Products Industry: Eastern U.S. Softwood and Hardwood Log Exports.(2021-10-28) Setzer, Trevor Terrell; Jeffrey Prestemon, Co-Chair; Kathryn Boys, Co-Chair; Robert Abt, Member
- Characterization of Spatial Structures and Autocorrelations in Forest Stands: Loblolly Pine Plantations in the Southeast US, Low Dipterocarp Natural Forests in Indonesia, and Eucalyptus Plantations in Brazil.(2014-12-17) Kim, Taek Joo; Bronson Bullock, Chair; Erin Sills, Member; Robert Abt, Member; Montserrat Fuentes, Minor; Arief Wijaya, External
- Forest Carbon Modeling: Methodological Improvements, Applications to Forest Expansion, Harvested Wood Products, and Environmental Justice Policy.(2024-10-25) Fuller, Madisen Ree; Justin Baker, Chair; Robert Abt, Member; Christopher Galik, Minor; Meredith Martin, Member
- Learning Lessons from a REDD+ Initiative: Assessing the Implementation Process, Forest and Community Outcomes, and Impacts on Local Households in Central Kalimantan, Indonesia.(2019-08-14) Selviana, Vivi; Erin Sills, Chair; Jason Delborne, Member; Robert Abt, Member
- Modeling Forest Carbon Sequestration to Understand the Influence of Stand Age, Management Practices, and Climate Inputs.(2025-03-07) Ganjam, Manaswini; Justin Baker, Co-Chair; Maricar Aguilos, Co-Chair; Josh Gray, Minor; Robert Abt, Member
- Potential of Loblolly Pine (Pinus taeda L.) as a Biofuel Feedstock.(2013-12-17) Barker, David Kenneth; Steven McKeand, Co-Chair; Ross Whetten, Co-Chair; Fikret Isik, Member; Robert Abt, Member; Sunkyu Park, Minor
- Problem Assessment of Silvopastoral Research and Extension in Uruguay.(2012-02-03) Myers, Russell; Frederick Cubbage, Chair; Robert Abt, Member; James Mueller, Member
- Quasi-experimental impact evaluation: applications to timber concessions and REDD+.(2017-06-05) Solis Chavez, David Braulio; Erin Sills, Chair; Frederick Cubbage, Member; Robert Abt, Member; Mitchell Renkow, Minor
- A Silvicultoral Decision Support System for Loblolly Pine Plantations(2002-01-11) Montes, Cristian Rodrigo; Lee Allen, Chair; Joseph Roise, Member; Robert Abt, MemberDifferent heuristic techniques were used to solve the stand management problem. The techniques, together with a growth and yield model and an expert system, form the methodological components of a decision support system developed for deciding forest management activities throughout a stand rotation. Random search (RS), simulated annealing (SA) and tabu-search (TS), were used to solve the optimization problem. A Growth and Yield model for Loblolly pine in the Carolina piedmont was used to predict forest growth under different thinning and/or fertilization regimes. Silvicultural activities like competing vegetation control, soil preparation, and early fertilization were included as early growth treatments for different soil and site conditions. Response to establishment treatment was predicted using a knowledge system based on expected gain and growth response associated with several soil types. Sensitivity analysis was undertaken to fine tune solutions from SA and TS. Recommended parameters for SA were: alpha = 0.99, max-iteration = 100000 and min-temperature = 0.01. The combination of two diversification techniques: least-used move and swap move were found to interact for improving solutions using TS. Tabu-tenure was found optimal at 50 for a neighborhood size of 156. Tabu-Search proved to be the best technique of all.
- Subsequence-Based Time Series Clustering Utilizing Stochastic Selection Methods(2015-06-15) Perryman, Benjamin Alan; Peter Bloomfield, Chair; Robert Abt, Member; Stephen Schecter, Member; Anya McGuirk, External; Ralph Smith, Member
- Three Essays on Risks of Natural Disasters in the U.S. Forest Sector.(2013-07-24) Chen, Xuan; Barry Goodwin, Chair; Xiaoyong Zheng, Member; Nicholas Piggott, Member; Robert Abt, Member; Jeffrey Prestemon, Member
- What's All the Fuzz About? Effects of FIA Spatial Precision on the Performance of Species Distribution Models.(2016-10-27) Direnzo, Joseph Anthony; Ross Meentemeyer, Chair; James McCarter, Member; Robert Abt, Member
