Download or read book Optimal Spatial dynamic Resource Allocation Facing Uncertainty written by Kim M. Hall and published by . This book was released on 2014 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spatial and temporal behavior of invasive species spread implies that optimal management strategies involve decisions over space and time. Dispersal and propagule pressure are two primary drivers of the spatial-temporal ecological process of species invasion. In the case of riparian communities, stream flow drives the dispersal of vegetation propagules. After arriving at a location, establishment depends in part on propagule pressure. This research incorporates an invasive species spreading through a river network over time --with stochasticity in dispersal, death, and establishment success-- into a dynamic economic decision framework to determine the optimal spatial and temporal pattern of invasive species management efforts. The optimization model employs a Markov Decision Process (MDP) solved using numerical methods. The decision framework developed in this research improves on current economic models by modeling ecological processes of invasion in an explicitly spatial setting with stochasticity to better inform the allocation of management resources. The model is parameterized to simulate the spread and management of the riparian invasive shrub, Tamarix sp., and optimal policies are applied to Monte Carlo simulations over twenty years. Several other rule of thumb policies are applied in the same way for comparison purposes. Results demonstrate that generating management plans through integrating ecology and economic tradeoffs produces management patterns that emphasize a whole-network approach rather than reach by reach; use different management tools in different locations and at different times than economic or ecological models alone; and generates substantial cost savings over other policies. The model demonstrated marked economic efficiency gains in avoided costs by optimal management that reflects the spatial and temporal processes of species invasion. In particular, results showed that simplifications of the ecology that ignores low probability dispersal events lead to costly misspecification of management tool, location and timing. Overall, the integration of key ecological characteristics into a stochastic, spatio-dynamic economic optimization considering the state of the entire river network avoids large errors in the management tool, its location, and its timing that simpler frameworks prescribe.
Download or read book Spatial Decision Support for Resource Allocation written by Jeroen C. J. H. Aerts and published by . This book was released on 2002 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Artificial Intelligence and Conservation written by Fei Fang and published by Cambridge University Press. This book was released on 2019-03-28 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increasing public interest in artificial intelligence (AI), there is also increasing interest in learning about the benefits that AI can deliver to society. This book focuses on research advances in AI that benefit the conservation of wildlife, forests, coral reefs, rivers, and other natural resources. It presents how the joint efforts of researchers in computer science, ecology, economics, and psychology help address the goals of the United Nations' 2030 Agenda for Sustainable Development. Written at a level accessible to conservation professionals and AI researchers, the book offers both an overview of the field and an in-depth view of how AI is being used to understand patterns in wildlife poaching and enhance patrol efforts in response, covering research advances, field tests and real-world deployments. The book also features efforts in other major conservation directions, including protecting natural resources, ecosystem monitoring, and bio-invasion management through the use of game theory, machine learning, and optimization.
Download or read book Techniques for the Allocation of Resources Under Uncertainty written by Pierrick Plamondon and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Dynamic Resource Allocation Policy in Multiproject Environments written by Stylianos K. Kavadias and published by . This book was released on 2000 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Control of Spatial Resource Allocation Problems written by Tassio Andrade de Carvalho and published by . This book was released on 1996 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essays in Optimal Resource Allocation Under Uncertainty with Capacity Constraints written by Elizabeth Hoffman and published by . This book was released on 1979 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis brings together four papers on optimal resource allocation under uncertainty with capacity constraints. The first is an extension of the Arrow-Debreu contingent claim model to a good subject to supply uncertainty for which delivery capacity has to be chosen before the uncertainty is resolved. The second compares an ex-ante contingent claims market to a dynamic market in which capacity is chosen ex-ante and output and consumption decisions are made ex-post. The third extends the analysis to a storable good subject to random supply. Finally, the fourth examines optimal allocation of water under an appropriative rights system.
Download or read book Dynamic Allocation of Temporal Resources Under Uncertainty written by Hossein Jahandideh and published by . This book was released on 2018 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temporal resources are defined as human or capital resources with a per-unit-time capacity that can be allocated to different services or products in different periods of time. Examples of temporal resources include machinery, computing power, warehouses, venues, staff, and specialized technology such as a chemical reactor. In this dissertation, I study the problem of dynamically allocating temporal resources to maximize revenue or to minimize costs when the decision-maker is uncertain about the outcome of decisions. I consider two different problems that represent challenges encountered in various industries. In the first chapter, I provide an introduction to the two problems presented in Chapters 2 and 3, discuss the respective motivating industries, and provide examples of broader applications. The first problem, presented in Chapter 2, is the sales of cloud services to owners of interactive (user-based) applications such as websites and mobile apps. If an application owner purchases the service, the provider hosts the application on the cloud and provides the computing power required to support the application users. Here, the units of resource (hardware capacity) allocated to an application over time is directly determined by the traffic-pattern of the application's users. Considering the resource capacity, the provider dynamically prices services to maximize revenue. I model the provider's pricing problem as a large-scale stochastic dynamic program. I decompose this multi-dimensional stochastic dynamic program into single-dimensional sub-problems by proposing a tractable decomposition procedure. I then extend the proposed framework to define an individualized dynamic pricing mechanism for the cloud provider. To evaluate the performance of the proposed pricing mechanism, I present novel upper bounds on the optimal revenue. The computational results show that the proposed model of selling cloud services achieves significantly greater revenue than the prevalent alternative, and that the presented pricing scheme attains near-optimal revenue. In the third chapter of my dissertation I analyze a catalyst-activated batch-production process with uncertainty in production times, learning about catalyst-productivity characteristics, and decay of catalyst performance across batches. The challenge is to determine the quality level of batches and to decide when to replenish a catalyst so as to minimize average costs consisting of inventory holding, backlogging, and catalyst switching costs. The temporal resource in this problem is the common reactor shared across batches and multiple products. I formulate this problem as a Semi-Markov Decision Process (SMDP), and use structural properties of the SMDP to define an effective two-level heuristic which is easy to interpret and implement, and to establish a lower bound on the optimal average cost to evaluate the heuristic. Through application to data from a leading food processing company, I show that the proposed methodology, in addition to attaining near-optimal costs, outperforms current practice by an average of 22 % reduction in costs.
Download or read book Optimal Control in Space and Time and the Management of Environmental Resources written by William A. Brock and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present methods and tools that can be used to study dynamic environmental resource management in a spatial setting, to explore spatially dependent regulation, and to understand pattern formation. In particular, we present the maximum principle and its use in the context of the emerging frontier of applications of optimal control of diffusive transport processes to environmental and resource economics. We show how optimal spatiotemporal control induces pattern formation and how deep uncertainty with a spatial structure can be handled with spatial robust control methods. Finally, we show how models with diffusive transport can be extended to allow for long-range effects and more general transport mechanisms.
Download or read book Robust Optimization for Network based Resource Allocation Problems Under Uncertainty written by Lavanya Marla and published by . This book was released on 2007 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: We consider large-scale, network-based, resource allocation problems under uncertainty, with specific focus on the class of problems referred to as multi-commodity flow problems with time-windows. These problems are at the core of many network-based resource allocation problems. Inherent data uncertainty in the problem guarantees that deterministic optimal solutions are rarely, if ever, executed. Our work examines methods of proactive planning, that is, robust plan generation to protect against future uncertainty. By modeling uncertainties in data corresponding to service times, resource availability, supplies and demands, we can generate solutions that are more robust operationally, that is, more likely to be executed or easier to repair when disrupted. The challenges are the following: approaches to achieve robustness 1) can be extremely problem-specific and not general; 2) suffer from issues of tractability; or 3) have unrealistic data requirements. We propose in this work a modeling and algorithmic framework that addresses the above challenges.
Download or read book Spatial Dynamics and Optimal Space time Development written by Walter Isard and published by North Holland. This book was released on 1979 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Statewide Optimal Resource Allocation Tool Using Geographic Information Systems Spatial Analysis and Regression Methods written by Konstadinos G. Goulias and published by . This book was released on 2008 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Aspects of Optimal Resource Allocation Within An Urban Setting written by David Pines and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimal Resource Allocation Tactics for Multi input Dynamic Systems written by James Vincent Wiseman and published by . This book was released on 1979 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimal Resource Allocation in a Dynamic and Stochastic Environment written by José Niño-Mora and published by . This book was released on 1995 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Accuracy Assessment in Natural Resources and Environmental Sciences written by and published by . This book was released on 1996 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: This international symposium on theory and techniques for assessing the accuracy of spatial data and spatial analyses included more than ninety presentations by representatives from government, academic, and private institutions in over twenty countries throughout the world. To encourage interactions across disciplines, presentations in the general subject areas of spatial statistics, geographic information systems, remote sensing, and multidisciplinary approaches were intermixed throughout the three days of sessions.
Download or read book Spatial Conservation Prioritization written by Atte Moilanen and published by Oxford University Press, USA. This book was released on 2009-05-28 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a coherent and comprehensive set of chapters, a team of leading scientists describe the present state-of-the-art in spatial conservation planning methodology with a focus on operational definitions and methods, supported by the latest technological details and applications of publicly available software.
