Download or read book Development and Evaluation of the Photoload Sampling Technique written by Laura J. Dickinson and published by CreateSpace. This book was released on 2015-06-25 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wildland fire managers need better estimates of fuel loading so they can accurately predict potential fire behavior and effects of alternative fuel and ecosystem restoration treatments. This report presents the development and evaluation of a new fuel sampling method, called the photoload sampling technique, to quickly and accurately estimate loadings for six common surface fuel components using downward looking and oblique photographs depicting a sequence of graduated fuel loadings of synthetic fuelbeds. This report details the methods used to construct the photoload sequences (series of photos depicting gradually increasing loadings) for the six fuel components. A companion paper (RMRS-GTR-190) presents the set of photoload sequences developed from this study for common fuelbed conditions found in the northern Rocky Mountains of Montana, USA, along with a detailed sampling protocol that can be used with these photoload picture series to estimate fuel component loadings in the field at various levels of effort and scale. An evaluation of the photoload sampling technique was conducted where 29 participants were asked to estimate loadings for the six fuel components on five sites using the photoload technique. These visual estimates were compared with actual measured loadings to obtain estimates of accuracy and precision. We found that photoload estimates consistently underestimated fuel loadings (average bias 0.182 kg m-2 or 0.8 tons acre-1) but the error of the estimate (0.018 kg m-2 or 0.08 tons acre-1) was within 10 to 50 percent of the mean depending on fuel component. We also found that accuracy and precision of the photoload estimates increased with increasing field experience and also with increasing fuel loadings.
Download or read book New Publications written by and published by . This book was released on 2007 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Study of the Development and Evaluation of a Work Sampling Technique Employing a Prolonged Observation Period written by Mortimer M. Sullivan and published by . This book was released on 1959 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper RMRS written by and published by . This book was released on 1998 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Photoload Sampling Technique written by Robert E. Keane and published by . This book was released on 2007 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire managers need better estimates of fuel loading so they can more accurately predict the potential fire behavior and effects of alternative fuel and ecosystem restoration treatments. This report presents a new fuel sampling method, called the photoload sampling technique, to quickly and accurately estimate loadings for six common surface fuel components (1 hr, 10 hr, 100 hr, and 1000 hr downed dead woody, shrub, and herbaceous fuels). This technique involves visually comparing fuel conditions in the field with photoload sequences to estimate fuel loadings. Photoload sequences are a series of downward-looking and close-up oblique photographs depicting a sequence of graduated fuel loadings of synthetic fuelbeds for each of the six fuel components. This report contains a set of photoload sequences that describe the range of fuel component loadings for common forest conditions in the northern Rocky Mountains of Montana, USA to estimate fuel loading in the field. A companion publication (RMRS-RP-61CD) details the methods used to create the photoload sequences and presents a comprehensive evaluation of the technique.
Download or read book Wildland Fuel Fundamentals and Applications written by Robert E. Keane and published by Springer. This book was released on 2014-11-04 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new era in wildland fuel sciences is now evolving in such a way that fire scientists and managers need a comprehensive understanding of fuels ecology and science to fully understand fire effects and behavior on diverse ecosystem and landscape characteristics. This is a reference book on wildland fuel science; a book that describes fuels and their application in land management. There has never been a comprehensive book on wildland fuels; most wildland fuel information was put into wildland fire science and management books as separate chapters and sections. This book is the first to highlight wildland fuels and treat them as a natural resource rather than a fire behavior input. Moreover, there has never been a comprehensive description of fuels and their ecology, measurement, and description under one reference; most wildland fuel information is scattered across diverse and unrelated venues from combustion science to fire ecology to carbon dynamics. The literature and data for wildland fuel science has never been synthesized into one reference; most studies were done for diverse and unique objectives. This book is the first to link the disparate fields of ecology, wildland fire, and carbon to describe fuel science. This just deals with the science and ecology of wildland fuels, not fuels management. However, since expensive fuel treatments are being planned in fire dominated landscapes across the world to minimize fire damage to people, property and ecosystems, it is incredibly important that people understand wildland fuels to develop more effective fuel management activities.
Download or read book General Technical Report RMRS written by and published by . This book was released on 1998 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Sampling written by Gary T. Henry and published by SAGE Publications, Incorporated. This book was released on 1990-08 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes bibliographical references.
Download or read book Field Sampling Methods for Remedial Investigations written by Mark E. Byrnes and published by CRC Press. This book was released on 1994-04-15 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a guide to the development of an effective field sampling program as well as to Standard Operating Procedures (SOPs) and technical information for many of the most effective remedial investigation methods. The book focuses on intrusive investigation techniques, but non-intrusive techniques such as aerial photography, surface geophysics, and surface radiological surveying are also addressed. SOPs have been provided for those sampling techniques that do not require specialized academic training, such as soil, sediment, surface water, groundwater, and drum sampling. For more specialized investigative techniques, such as underground drainage surveying and some types of soil-gas surveying, information is provided to help you understand how the technique works and under what conditions it can be used most effectively. The book also addresses: equipment decontamination; sample preparation, documentation, and shipment; health and safety; and management of investigation-derived waste. Emphasis is placed on those methods and procedures that have both proved themselves to be effective and are acknowledged by the U.S. Environmental Protection Agency (EPA) as reputable techniques.
Download or read book Sampling written by Sharon L. Lohr and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Demonstration of a Method to Evaluate Bio sampling Strategies Using Building Simulation and Sample Planning Software written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Modified Unequal Sampling Technique for Active Filtering Application written by Anil K. Nagarkoti and published by . This book was released on 1993 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photo Guide for Quantitatively Assessing the Characteristics of Forest Fuels in a Jack Pine black Spruce Chronosequence in the Northwest Territories written by Nathalie Lavoie and published by . This book was released on 2010 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation and Development of Strategies for Sample Coordination and Statistical Inference in Finite Population Sampling written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This Ph. D. thesis concentrates on two important subjects in survey sampling theory. One is the problem of the foundation for statistical inference in finite population sampling, and the other is the problem of coordination of samples over time. The thesis is based on four articles. Three of them are already published and the last one is submitted for publication. First, we show that the model-based and design-based inferences can be reconciliated if we search for an optimal strategy rather than just an optimal estimator, a strategy being a pair composed of a sampling design and an estimator. If we accept the idea that balanced samples are randomly selected, e.g. by the cube method, then we show that, under the linear model, an optimal strategy consists of a balanced sampling design with inclusion probabilities that are proportional to the standard deviations of the errors of the model and the Horvitz-Thompson estimator. Moreover, if the heteroscedasticity of the model is "fully explainable" by the auxiliary variables, then the best linear unbiased estimator and the Horvitz-Thompson estimator are equal. We construct a single estimator for both the design and model variance. The inference can thus be valid under the sampling design and under the model. Finally, we show that this strategy is robust and efficient when the model is misspecified. Coordination of probabilistic samples is a challenging theoretical problem faced by statistical institutes. One of their aims is to maximize or minimize the overlap between several samples drawn successively in a population that changes over time. In order to do that, a dependence between the samples must be introduced. Several methods for coordinating stratified samples have already been developed. Using simulations, we compare their optimality and quality of coordination. We present new methods based on Permanent Random Numbers (PRNs) and microstrata which have the advantage of allowing us to choose between positive or negative.
Download or read book Simulation of an Importance Sampling Technique for the Evaluation of Probability of Error in Signal Detection written by Murali Mavilla and published by . This book was released on 1994 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application and Further Development of the Angle count Sampling Technique A Literary Review written by Walter Bitterlich and published by . This book was released on 1968 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Landscape Fire Smoke and Health written by Tatiana V. Loboda and published by John Wiley & Sons. This book was released on 2023-10-11 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landscape Fire, Smoke, and Health Linking Biomass Burning Emissions to Human Well-Being Where and when wildfires occur, what pollutants they emit, how the chemistry of smoke changes in the atmosphere, and what impact this air pollution has on human health and well-being are questions explored across different scientific disciplines. Landscape Fire, Smoke, and Health: Linking Biomass Burning Emissions to Human Well-Being is designed to create a foundational knowledge base allowing interdisciplinary teams to interact more effectively in addressing the impacts of air pollution from biomass burning on human health. Volume highlights include: Core concepts, principles, and terminology related to smoke and air quality used in different disciplines Observational and modeling tools and approaches in fire science Methods to sense, model, and map smoke in the atmosphere Impacts of biomass burning smoke on the health and well-being of children and adults Perspectives from researchers, modelers, and practitioners Case studies from different countries Information to support decision-making and policy The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
