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COFE - Council On Forest Engineering - Conference Proceedings 2004 Welcome to the Council on Forest Engineering(COFE) Publications Website 2004. MACHINES AND PEOPLE, THE INTERFACE Hot Springs, Arkansas - April 27-30, 2004 Select an individual paper from the list below. If you know the last name of the primary author you may also click that letter below to go to that paper. A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Akay, Abdullah E.; Sessions, John; Bettinger, Pete; & Erdas, Orhan. Finding the Vertical Alignment of Forest Roads Using Several Heuristic Techniques. Beatty, Bill; Wang, Jingxin; McNeel, Joe; & Edwards, Pam. Spatial Analysis of To-Stream Sediment Delivery in Central Appalachian Forested Watersheds. Bell, Jennifer. Evaluating the Effectiveness of a Logger Safety Training Program. Bielecki, Chris & Garland, John. Logging Machinery used in Wildland Fire Suppression. deHoop, Cornelis & Lefort, Albert J. Loggers and Bureaucrats: A Strategic Partnership Improves Accident Recording and Safety Education Gallagher, Tom; Smidt, Mathew; McDonald, Tim; & Tufts, Robert. How To Improve Transportation Efficiency and Cost a WSRI Project. Garland, John. Lessons Learned from Logging Litigation. Hartter, Joel; Garland, John; & Pilkerton, Steve. Using Synthetic Rope in Forest Operations: End Connector Concepts. Hodges, Christine & Visser, Rien. https://www.cofe.frec.vt.edu/2004.html[1/15/2019 3:02:28 PM] COFE - Council On Forest Engineering - Conference Proceedings 2004 Comparison of Streamside Management Zone Requirements in the Southeast. Horcher, Andy & Visser, Rien J.M. Unmanned Aerial Vehicles: Applications for Natural Resource Management and Monitoring. Jensen, Kristopher & Visser, Rien. Low Impact Forest Harvesting at the Urban Interface. Klepac, John & Rummer, Bob. Production and Cost of a Conventional System Harvesting Small-Diameter Lodgepole Pine in Wyoming. Largo, Simon & Han, Han-Sup. Economics of an Integrated Harvesting System in Fuel Reduction Thinning in Western Montana. Largo, Simon; Han, Han-Sup; & Johnson, Leonard. Productivity and Cost Evaluation for Non-guyline Yarders in Northern Idaho. Li, Yaoxiang; Wang, Jingxin; Miller, Gary; & McNeel, Joe. Production Economics of Harvesting Young Hardwood Stands in Central Appalachia. Okonski, Jerry. Skyline Systems in Appalachia – 11 Tribulations. Parker, Richard; Ashby, Liz; Tappin, David; & Moore, Dave. The New Zealand Forest Industry Accident Reporting Scheme (ARS). Pilkerton, Stephen J.; Garland, John; & Hartter, Joel. Comparison of Ergonomic Performance for a Skidder Operator Using Steel Wire and Synthetic Rope Winch Line. Thompson, Jason D. & Rummer, Bob. Comparing the Productivity of a Cut-To-Length Harvester Over Time. Veal, Matthew; Taylor, Steven; & Rummer, Robert. Modeling the Behavior of Excavator-Based Forest Machine Rollovers. Vik, Tore. Ergonomic Research in the Nordic Countries Related to Work in the Forest. Yonce, Mary & Visser, Rien. Evaluation of Methods and Procedures for Best Management Practices Monitoring and Reporting in the Southeast United States. ~ top ~ https://www.cofe.frec.vt.edu/2004.html[1/15/2019 3:02:28 PM] COFE - Council On Forest Engineering - Conference Proceedings 2004 Return to Publications Homepage https://www.cofe.frec.vt.edu/2004.html[1/15/2019 3:02:28 PM] 2004 Council on Forest Engineering (COFE) Conference Proceedings: “Machines and People, The Interface” Hot Springs, April 27-30, 2004 Finding the Vertical Alignment of Forest Roads Using Several Heuristic Techniques Abdullah E. Akay, Department of Forest Engineering, Faculty of Forestry, Kahramanmaras Sutcu Imam University, 46100 Kahramanmaras, Turkey. (Tel: +90 (344) 223-7666, Fax: +90 (344) 221-7244, (E-mail: [email protected]) John Sessions, Department of Forest Engineering, College of Forestry, Oregon State University, Corvallis, Oregon 97331, USA. (E-mail: [email protected]) Pete Bettinger, Warnell School of Forest Resources, University of Georgia, Georgia 30602, USA. (E-mail: [email protected]) Orhan Erdas, Department of Forest Engineering, Faculty of Forestry, Kahramanmaras Sutcu Imam University, 46100 Kahramanmaras, Turkey. (E-mail: [email protected]) ABSTRACT Once the horizontal alignment of a forest road section between two known locations has been determined by establishing a series of intersection points, the most economic vertical alignment can be identified using heuristic techniques. In a previous research work, Simulated Annealing (SA) was used to locate the optimal vertical alignment for a preselected horizontal alignment, while subject to the geometric design specifications, environmental requirements, and driver safety. The feasible vertical alignments were generated by adjusting the intersection points using a neighborhood search procedure and acceptance criterion. For each alignment, the earthwork cost was minimized using linear programming. This study is a sequel to this earlier study. It employs various heuristic techniques for optimizing vertical alignment of a forest road section and compares their performances in a simple application. The results indicated that heuristic techniques may be useful tools for identifying the optimum vertical alignment at acceptable computational time. Key Words: forest roads, vertical alignment, optimization, heuristics INTRODUCTION design methods. The results indicated that the optimization model took significantly less calculation In order to locate the lowest total cost path subject to time compared to an existing road designed using environmental requirements and driver safety, forest traditional methods. road designers should examine a sufficient number of alternative alignments to assure that they have Suzuki et al. (1998) also applied a Genetic Algorithm identified a good one. Evaluating a large number of (GA) to a forest road design problem for recreation. alternative paths considering the specified constraints In this study, scenic values, road slope, distance is too complex a problem to solve with traditional between roads, variation of the ground elevation, road design methods (Akay 2003). Heuristic road length, and longitudinal slope were the techniques can be used to solve such a problem with evaluation factors. First, two intermediate points per many solutions. These techniques systematically one route were located to search between four points search for the optimal solution among feasible including the beginning point, two intermediate solutions at acceptable computational cost (Beasley points, and the end point. Then, GA was employed et al. 1993). to find an optimal solution by altering coordinates of the intermediate points. Comparison of the forest In recent years, heuristic techniques have been road profiles designed using GA and traditional applied to forest road design problems. To optimize method indicated that GA significantly reduced the vertical alignment for a forest road, Ichihara et al. calculation time. (1996) developed an optimization model using a heuristic technique (Genetic Algorithm) for Akay (2003) developed a forest road alignment identifying the optimum combinations of intersection model, TRACER. An initial alignment was located points and dynamic programming for locating the on a 3D view of the terrain generated based on a optimum longitudinal slope with minimum high-resolution DEM, considering the specified construction cost. The model was applied to a road constraints. The constraints included geometric section that had been located using traditional road specifications, environmental requirements, and 2004 Council on Forest Engineering (COFE) Conference Proceedings: “Machines and People, The Interface” Hot Springs, April 27-30, 2004 driver safety. A heuristic technique, Simulated systematically search for the good quality/near Annealing, was used to search for the best vertical optimal solution among the acceptable solutions. alignment with minimum total cost of construction, maintenance, and transportation costs. For each Simulated Annealing alignment alternative, a linear programming method (Mayer and Stark 1981) was used to determine the The idea of Simulated Annealing (SA) is based on a economic distribution of cut and fill quantities. The simulation of a metallurgical process known as model application indicated that development of a annealing. In order to produce a good quality road design that incorporates computer graphics product, a solid material should be heated past its capability, advanced remote sensing technologies, melting point and then gradually cooled back into an and optimization techniques could significantly optimal state, subject to a reheating and cooling improve the design process for forest roads. schedule. Kirkpatrick et al. (1983) suggested that this Aruga et al. (2004) developed a model to compare process could be basis of a heuristic technique for capabilities of two heuristic techniques, GA and Tabu combinatorial problems. SA uses a local search Search (TS), in planning of a forest road profile. In where alternative solutions are generated by moving the model, alternative profiles were generated by from one solution to a neighborhood solution. There adjusting the heights and the location of the are number of generic decisions to be made for intersection points. The method of Akay (2003) was implementing the algorithm. These decisions include used to calculate total cost of construction and the initial temperature (t), the temperature reduction maintenance activities.
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