Download or read book Operational Forest Harvest Scheduling Optimisation written by Stuart Anthony Mitchell and published by . This book was released on 2004 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Mathematical Model for the Integrated Optimization of Harvest and Transport Scheduling of Forest Products written by Paulo Amaro Velloso Henriques dos Santos and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The costs related to forest harvesting and wood transport are key to the economic viability of forest investments. These operations compose a major share of the total cost of wood production and thus need to be conducted in an efficient manner. In this paper, we propose a novel optimization model to tackle this issue and perform the daily and weekly plan of harvesting operations, in order to minimize the costs related to the machinery operation, movement, and wood transportation, subject to demand constraints. Our results show that transportation costs dominate the total cost of these operations. The model proposed is appropriate and can be effectively applied to optimize the operational planning of harvesting activities. Nevertheless, instances with a large number of stands may lead to a substantial increase in the complexity and computational burden. We conclude that operations research techniques can provide a solid basis for decision-making in harvest scheduling problems and increase the efficiency of forest management
Download or read book Modelling Economic Stand Level Optimization of Forest Harvest Scheduling in Denmark by Application of Decision Tree Optimization and Linear Programming written by Peter Tarp and published by . This book was released on 1994 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Robust Scheduling in Forest Operations Planning written by Lui Cheng Lim and published by . This book was released on 2008 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest operations planning is a complex decision process which considers multiple objectives on the strategic, tactical and operational horizons. Decisions such as where to harvest and in what order over different time periods are just some of the many diverse and complex decisions that are needed to be made. An important issue in real-world optimization of forest harvesting planning is how to treat uncertainty of a biological nature, namely the uncertainty due to different growth rates of trees which affects their respective yields. Another important issue is in the effective use of high capital intensive forest harvesting machinery by suitable routing and scheduling assignments. The focus of this thesis is to investigate the effects of incorporating the robust formulation and a machinery assignment problem collectively to a forest harvesting model. The amount of variability in the harvest yield can be measured by sampling from historical data and suitable protection against uncertainty can be set after incorporating the use of a suitable robust formulation. A trade off between robustness to uncertainty with the deterioration in the objective value ensues. Using models based on industrial and slightly modified data, both the robust and routing formulations have been shown to affect the solution and its underlying structure thus making them necessary considerations. A study of feasibility using Monte Carlo simulation is then undertaken to evaluate the difference in average performances of the formulations as well as to obtain a method of setting the required protections with an acceptable probability of infeasibility under a given set of scenarios.
Download or read book Operational Forest Management Planning Methods written by Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) and published by . This book was released on 1978 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Management and Planning written by Pete Bettinger and published by Academic Press. This book was released on 2016-12-29 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest Management and Planning, Second Edition, addresses contemporary forest management planning issues, providing a concise, focused resource for those in forest management. The book is intermixed with chapters that concentrate on quantitative subjects, such as economics and linear programming, and qualitative chapters that provide discussions of important aspects of natural resource management, such as sustainability. Expanded coverage includes a case study of a closed canopy, uneven-aged forest, new forest plans from South America and Oceania, and a new chapter on scenario planning and climate change adaptation. Helps students and early career forest managers understand the problems facing professionals in the field today Designed to support land managers as they make complex decisions on the ecological, economic, and social impacts of forest and natural resources Presents updated, real-life examples that are illustrated both mathematically and graphically Includes a new chapter on scenario planning and climate change adaptation Incorporates the newest research and forest certification standards Offers access to a companion website with updated solutions, geographic databases, and illustrations
Download or read book Forest Value Chain Optimization and Sustainability written by Sophie D'Amours and published by CRC Press. This book was released on 2016-12-01 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a global perspective on the various issues that the industry has to face as well as to provide some key global strategies that can help coping with those global challenges, such as collaboration, strategic value chain planning, and interdependency analyses. It presents literature reviews, strategic research orientations, assessment of some current key issues, and state-of-the-art methodologies.
Download or read book Computational Methods for Agricultural Research Advances and Applications written by do Prado, Hrcules Antonio and published by IGI Global. This book was released on 2010-10-31 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book brings computing solutions to ancient practices and modern concerns, sowing the seeds for a sustainable, constant food supply, utilizing cutting-edge computational techniques"--Provided by publisher.
Download or read book Timber Harvest Scheduling Model written by K. Norman Johnson and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Regulation Harvest Scheduling and Planning Techniques written by William A. Leuschner and published by Wiley-Interscience. This book was released on 1990-06-21 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the regulation, harvest scheduling and planning techniques that are central to modern forest management. Traditional forest regulation is covered in detail, with assessments of such classical techniques as area and volume control as well as the neoclassical concepts of area-volume check and combined area and volume control. The sections on harvest scheduling examine mathematical programming models and solution techniques and their applications in scheduling problems; techniques using economic considerations, sloping demands and binary search are also discussed. There is a section on planning that includes a look at multiple objective techniques and FORPLAN, the USDA-Forest Service system for forest-wide planning. In addition, it contains useful information on linear programming methods and after- tax cashflow accounting.
Download or read book Insights from Harvest Scheduling Applications in Minnesota written by Howard M. Hoganson and published by . This book was released on 2014 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extending Harvest scheduling Using Spatial Optimization written by Kai L. Ross and published by . This book was released on 2016 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scheduling of management actions across forest stands is a fundamental task in the world of forestry. However, the spatial and temporal layout of management actions can lead to a combinatorial explosion of potential options to consider. Additionally, these management alternatives must often meet various constraints and limitations. The sheer quantity of options quickly pushes these problems out of the realm of "eyeballing" a good, or even feasible, solution. Because of this, managers have turned to optimization models to help determine the best harvest schedule that meets all requirements. Due to the computational complexity of these models, managers are forced to make simplifying assumptions, and to limit the scope of the models to only the most fundamental aspects. Now, with continued progress in both computational power and solution techniques, it is becoming both practical and feasible to extend these harvest scheduling models to consider broader aspects of the process. In this dissertation I consider two major extensions to harvest scheduling models: road access and edge effects. In chapter 1, I worked with the Washington State Department of Natural Resources to extend their harvest schedule modeling to consider the endogenous cost of rebuilding and maintaining the road network used to access a forest. I propose the Endogenous Fixed Charge Model (EFCM) to incorporate road costs that that vary endogenously with the system's harvest decisions. In a case study in the Pacific Northwest, the EFCM was integrated into DNR's standard workflows through the use of custom software called "Builder" that amended the EFCM constraints and variables to DNR's exiting harvest schedule optimization. Results from the case study show the EFCM was able to increase net present value over a million dollars and to reduce the overall road network by some 14%. In chapter 2, I explore how edge effects between managed forest units can be controlled and mitigated. Newly created edges caused my management actions to alter the landscape and can affect many environmental factors. These altered environmental factors have a variety of impacts on forest growth and structure and can alter harvest yields and habitat for wildlife. After discussing how edge effects can arise from a variety of management actions, I propose a general optimization modeling framework to detect and flag newly created edges while determining an optimal management schedule. I use the real world context of clear-cut harvesting to illustrate multiple possible management objectives tied to the creation and delineation of newly formed edges. In a case study in the Pacific Northwest, I demonstrate how the modeling framework can be used to mitigate damage associated with increased wind exposure caused my neighboring harvests. Results from the case study show the modeling framework functions as intended and that a significant reduction in wind damage can be achieved by considering the spatial and temporal sequencing of harvest actions. In chapter 3, I return to the road access problem to examine how an alternative representation of the road network affects the solution behavior of a joint harvest-scheduling and road-access model using route-finding. Route-finding removes the assumption of predefined routes and allows the optimization model to choose the best hauling route while considering all other harvests that need routing. The number of constraints and variables used for route-finding depend on the size and configuration of the road network. Therefore it is important to consider how alternative representations of the road network effect the solution behavior of these difficult-to-solve models. To test network representations, I propose a Mixed Integer Program (MIP) to include road-access using route-finding within a harvest-scheduling optimization. I apply this model to two different representations of the road network: the Traditional Spatial Representation (TSR) where roads are modeled as arcs connecting nodes, and the Line Graph Representation where roads are modeled as nodes, and arcs represent shared intersections. This transformation retains the same information as the original network, but can alter the number of nodes and arcs in the system. I illustrate the mechanics of the model in a case study in the Pacific Northwest and show that the LGR was able to outperform the TSR in many of the tested scenarios.
Download or read book Applications of Location Analysis written by H. A. Eiselt and published by Springer. This book was released on 2015-09-22 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, companion to Foundations of Location Analysis (Springer, 2011), highlights some of the applications of location analysis within the spheres of businesses, those that deal with public services and applications that deal with law enforcement and first responders. While the Foundations book reviewed the theory and first contributions, this book describes how different location techniques have been used to solve real problems. Since many real problems comprise multiple objectives, in this book there is more presence of tools from multicriteria decision making and multiple-objective optimization. The section on business applications looks at such problems as locating bank branches, the potential location of a logistics park, sustainable forest management and layout problems in a hospital, a much more difficult type of problem than mere location problems. The section on public services presents chapters on the design of habitats for wildlife, control of forest fires, the location of intelligent sensors along highways for timely emergency response, locating breast cancer screening centers, an economic analysis for the locations of post offices and school location. The final section of the book includes chapters on the well-known problem of locating fire stations, a model for the location of sensors for travel time information, the problem of police districting, locations of jails, location of Coast Guard vessels and finally, a survey of military applications of location analysis throughout different periods of recent history.
Download or read book The Development and Evaluation of an Operational Spatial and Temporal Timber Harvest Scheduling System written by Caroline Nugent and published by . This book was released on 1998 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Harvest Planning in Forestry with Uncertain Future Prices and Demands written by Simon Papps and published by . This book was released on 1998 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Management of Industrial Forest Plantations written by José G. Borges and published by Springer. This book was released on 2014-09-01 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Management of Industrial Forest Plantations. Theoretical Foundations and Applications provides a synthesis of current knowledge about industrial forestry management planning processes. It covers components of the forest supply chain ranging from modelling techniques to management planning approaches and information and communication technology support. It may provide effective support to education, research and outreach activities that focus on forest industrial plantations management. It may contribute further to support forest managers when developing industrial plantations management plans. The book includes the discussion of applications in 26 Management Planning in Actions boxes. These applications highlight the linkage between theory and practice and the contribution of models, methods and management planning approaches to the efficiency and the effectiveness of industrial plantations management planning.
Download or read book Multi objective Forest Planning written by Timo Pukkala and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the scientific methods devised for forest planning support timber production ignoring the existence of forest functions other than wood production. Fortunately, the realisation that the forest planning methods available today do not correspond to the needs of today's forestry has activated forest researchers to develop and adopt new methodologies and approaches, which are specifically aimed at multi-objective situations. This book is about the quantitative approach to multi-objective forest planning. The emphasis is on topics that are rather new and not yet systematically applied in forest planning practice. The topics and methodologies discussed in this book include: measurement of preferences, multiple criteria decision analysis, use of GIS to support multi-objective forest management, heuristic optimization, spatial optimisation, and the measurement of non-wood forest outputs. By reading the book, a planning specialist, student or a researcher will get an insight into some of the current developments in forest planning research.
