Download or read book SRS Composite Analysis written by 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 Enhanced Uncertainty Analysis for SRS Composite Analysis written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Composite Analysis (CA) performed for the Savannah River Site (SRS) in 2009 (SRS CA 2009) included a simplified uncertainty analysis. The uncertainty analysis in the CA (Smith et al. 2009b) was limited to considering at most five sources in a separate uncertainty calculation performed for each POA. To perform the uncertainty calculations in a reasonable amount of time, the analysis was limited to using 400 realizations, 2,000 years of simulated transport time, and the time steps used for the uncertainty analysis were increased from what was used in the CA base case analysis. As part of the CA maintenance plan, the Savannah River National Laboratory (SRNL) committed to improving the CA uncertainty/sensitivity analysis. The previous uncertainty analysis was constrained by the standard GoldSim licensing which limits the user to running at most four Monte Carlo uncertainty calculations (also called realizations) simultaneously. Some of the limitations on the number of realizations that could be practically run and the simulation time steps were removed by building a cluster of three HP Proliant windows servers with a total of 36 64-bit processors and by licensing the GoldSim DP-Plus distributed processing software. This allowed running as many as 35 realizations simultaneously (one processor is reserved as a master process that controls running the realizations). These enhancements to SRNL computing capabilities made uncertainty analysis: using 1000 realizations, using the time steps employed in the base case CA calculations, with more sources, and simulating radionuclide transport for 10,000 years feasible. In addition, an importance screening analysis was performed to identify the class of stochastic variables that have the most significant impact on model uncertainty. This analysis ran the uncertainty model separately testing the response to variations in the following five sets of model parameters: (a) K{sub d} values (72 parameters for the 36 CA elements in sand and clay), (b) Dose Parameters (34 parameters), (c) Material Properties (20 parameters), (d) Surface Water Flows (6 parameters), and (e) Vadose and Aquifer Flow (4 parameters). Results provided an assessment of which group of parameters is most significant in the dose uncertainty. It was found that K{sub d} and the vadose/aquifer flow parameters, both of which impact transport timing, had the greatest impact on dose uncertainty. Dose parameters had an intermediate level of impact while material properties and surface water flows had little impact on dose uncertainty. Results of the importance analysis are discussed further in Section 7 of this report. The objectives of this work were to address comments received during the CA review on the uncertainty analysis and to demonstrate an improved methodology for CA uncertainty calculations as part of CA maintenance. This report partially addresses the LFRG Review Team issue of producing an enhanced CA sensitivity and uncertainty analysis. This is described in Table 1-1 which provides specific responses to pertinent CA maintenance items extracted from Section 11 of the SRS CA (2009). As noted above, the original uncertainty analysis looked at each POA separately and only included the effects from at most five sources giving the highest peak doses at each POA. Only 17 of the 152 CA sources were used in the original uncertainty analysis and the simulation time was reduced from 10,000 to 2,000 years. A major constraint on the original uncertainty analysis was the limitation of only being able to use at most four distributed processes. This work expanded the analysis to 10,000 years using 39 of the CA sources, included cumulative dose effects at downstream POAs, with more realizations (1,000) and finer time steps. This was accomplished by using the GoldSim DP-Plus module and the 36 processors available on a new windows cluster. The last part of the work looked at the contribution to overall uncertainty from the main categories of uncertainty variables: K{sub d}s, dose parameters, flow parameters, and material properties. This was not intended to be a detailed sensitivity analysis but only to see in very general terms what broad category of parameters contributes most significantly to overall uncertainty in the CA dose. This analysis was not intended to be a final CA uncertainty calculation and there was no intent to revise the stochastic distributions as part of this work.

Download or read book Composite Materials written by R. Velmurugan and published by CRC Press. This book was released on 2023-12-05 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizing the recent advances in high strain rate testing, this book discusses techniques for designing, executing, analyzing, and interpreting the results of experiments involving the dynamic behavior of multifunctional materials such as metals, polymers, fiber-reinforced polymers, hybrid laminates and so forth. The book also discusses analytical and numerical modeling of materials under high-velocity impact loading and other environmental conditions. Recent advances in characterization techniques such as digital image correlation and computed tomography for high strain rate applications are included. Features Presents exclusive material on high-rate properties of fiber-reinforced composites Provides numerical techniques on the analysis and enriched data on the high strain rate behavior of materials Explores cutting-edge techniques and experimental guidelines for an array of different materials subjected to high strain rate loading Explains clear understanding of material behavior at various strain rates Reviews mechanical response of different materials at high strain rates This book is aimed at researchers and professionals in mechanical, materials, and aerospace engineering.

Download or read book Savannah River Plant High Level Waste Waste Form Selection Aiken written by and published by . This book was released on 1982 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hybrid Fiber Composites written by Anish Khan and published by John Wiley & Sons. This book was released on 2020-06-25 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber-reinforced composites are exceptionally versatile materials whose properties can be tuned to exhibit a variety of favorable properties such as high tensile strength and resistance against wear or chemical and thermal influences. Consequently, these materials are widely used in various industrial fields such as the aircraft, marine, and automobile industry. After an overview of the general structures and properties of hybrid fiber composites, the book focuses on the manufacturing and processing of these materials and their mechanical performance, including the elucidation of failure mechanisms. A comprehensive chapter on the modeling of hybrid fiber composites from micromechanical properties to macro-scale material behavior is followed by a review of applications of these materials in structural engineering, packaging, and the automotive and aerospace industries.

Download or read book EEG Signal Analysis and Classification written by Siuly Siuly and published by Springer. This book was released on 2017-01-03 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents advanced methodologies in two areas related to electroencephalogram (EEG) signals: detection of epileptic seizures and identification of mental states in brain computer interface (BCI) systems. The proposed methods enable the extraction of this vital information from EEG signals in order to accurately detect abnormalities revealed by the EEG. New methods will relieve the time-consuming and error-prone practices that are currently in use. Common signal processing methodologies include wavelet transformation and Fourier transformation, but these methods are not capable of managing the size of EEG data. Addressing the issue, this book examines new EEG signal analysis approaches with a combination of statistical techniques (e.g. random sampling, optimum allocation) and machine learning methods. The developed methods provide better results than the existing methods. The book also offers applications of the developed methodologies that have been tested on several real-time benchmark databases. This book concludes with thoughts on the future of the field and anticipated research challenges. It gives new direction to the field of analysis and classification of EEG signals through these more efficient methodologies. Researchers and experts will benefit from its suggested improvements to the current computer-aided based diagnostic systems for the precise analysis and management of EEG signals. /div

Download or read book Savannah River Site High level Waste Tank Closure written by and published by . This book was released on 2002 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Protective Packaging for Distribution written by Daniel Goodwin and published by DEStech Publications, Inc. This book was released on 2011 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supplies essential techniques needed for protective packaging Explains testing required for container performance Covers distribution packaging for food, healthcare, electronics, as well as hazardous and regulated materials Reviews basic math and physics fundamentals for students and professionals Protective Packaging Development offers a comprehensive practical explanation of the methods needed to improve packaging design in multiple distribution environments. It combines a clear presentation of protective packaging basics with details on how to obtain and apply experimental data to the design of new packaging. In this context it covers the materials, testing, regulations and manufacturing of a wide range of product and shipping containers. Written by two of the most respected packaging authorities in the U.S., the book covers packaging mathematics and physics in a clear step-by-step way and shows with numerous real-world examples how these concepts are applied to design strategies. In this unique book students and professionals are given the testing and data information required for creating a wide range of protective packaging systems within numerous product categories such as electronics, healthcare, and food. Also covered are container requirements and tests for hazardous and regulated materials.

Download or read book Bioinformatics written by Zoé Lacroix and published by Elsevier. This book was released on 2003-09-08 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life science data integration and interoperability is one of the most challenging problems facing bioinformatics today. In the current age of the life sciences, investigators have to interpret many types of information from a variety of sources: lab instruments, public databases, gene expression profiles, raw sequence traces, single nucleotide polymorphisms, chemical screening data, proteomic data, putative metabolic pathway models, and many others. Unfortunately, scientists are not currently able to easily identify and access this information because of the variety of semantics, interfaces, and data formats used by the underlying data sources. Bioinformatics: Managing Scientific Data tackles this challenge head-on by discussing the current approaches and variety of systems available to help bioinformaticians with this increasingly complex issue. The heart of the book lies in the collaboration efforts of eight distinct bioinformatics teams that describe their own unique approaches to data integration and interoperability. Each system receives its own chapter where the lead contributors provide precious insight into the specific problems being addressed by the system, why the particular architecture was chosen, and details on the system's strengths and weaknesses. In closing, the editors provide important criteria for evaluating these systems that bioinformatics professionals will find valuable. * Provides a clear overview of the state-of-the-art in data integration and interoperability in genomics, highlighting a variety of systems and giving insight into the strengths and weaknesses of their different approaches. * Discusses shared vocabulary, design issues, complexity of use cases, and the difficulties of transferring existing data management approaches to bioinformatics systems, which serves to connect computer and life scientists. * Written by the primary contributors of eight reputable bioinformatics systems in academia and industry including: BioKris, TAMBIS, K2, GeneExpress, P/FDM, MBM, SDSC, SRS, and DiscoveryLink.

Download or read book Mechanical Vibration and Shock Analysis Mechanical Shock written by Christian Lalanne and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Vibration and Shock Analysis, Second Edition Volume 2: Mechanical Shock This volume considers the shock response spectrum, its various definitions, its properties, and the assumptions involved in its calculation. In developing the practical application of these concepts, the shock shapes or profiles most often used in test facilities are presented, together with their characteristics and indications of how to establish test configurations comparable with those of the real-world, measured environment. Following this analysis there is a case study of how to meet these specifications using standard laboratory equipment, shock machines, electrodynamic exciters driven by a time signal or a response spectrum. Discussion of the limitations, advantages and disadvantages of each method is presented. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.

Download or read book Addendum to the Composite Analysis for the E Area Vaults and Saltstone Disposal Facilities written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the composite analysis performed on the two active SRS low-level radioactive waste disposal facilities. The facilities are the Z-Area Saltstone Disposal Facility and the E-Area Vaults Disposal Facility.

Download or read book Statistical Methods in Healthcare written by Frederick W. Faltin and published by John Wiley & Sons. This book was released on 2012-07-24 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Statistical Methods in Healthcare In recent years the number of innovative medicinal products and devices submitted and approved by regulatory bodies has declined dramatically. The medical product development process is no longer able to keep pace with increasing technologies, science and innovations and the goal is to develop new scientific and technical tools and to make product development processes more efficient and effective. Statistical Methods in Healthcare focuses on the application of statistical methodologies to evaluate promising alternatives and to optimize the performance and demonstrate the effectiveness of those that warrant pursuit is critical to success. Statistical methods used in planning, delivering and monitoring health care, as well as selected statistical aspects of the development and/or production of pharmaceuticals and medical devices are also addressed. With a focus on finding solutions to these challenges, this book: Provides a comprehensive, in-depth treatment of statistical methods in healthcare, along with a reference source for practitioners and specialists in health care and drug development. Offers a broad coverage of standards and established methods through leading edge techniques. Uses an integrated case study based approach, with focus on applications. Looks at the use of analytical and monitoring schemes to evaluate therapeutic performance. Features the application of modern quality management systems to clinical practice, and to pharmaceutical development and production processes. Addresses the use of modern statistical methods such as Adaptive Design, Seamless Design, Data Mining, Bayesian networks and Bootstrapping that can be applied to support the challenging new vision. Practitioners in healthcare-related professions, ranging from clinical trials to care delivery to medical device design, as well as statistical researchers in the field, will benefit from this book.

Download or read book Taphonomy written by Ronald E. Martin and published by Cambridge University Press. This book was released on 1999-10-28 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taphonomy: A Process Approach is the first book to review the entire field of taphonomy, or the science of fossil preservation. It describes the formation of animal and plant fossils in marine and terrestrial settings and how this affects deciphering the ecology and extinction of past lifeforms and the environments in which they lived. The volume emphasises a process approach to taphonomy and reviews the taphonomic behaviour of all important taxa, plant and animal. It will be useful to anyone interested in the preservation of fossils and the formation of fossil assemblages, but it is aimed primarily at advanced students and professionals working in paleontology, stratigraphy, sedimentology, climate modeling and biogeochemistry.

Download or read book Annual Book of ASTM Standards written by American Society for Testing and Materials and published by . This book was released on 1998 with total page 1586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spinal Osteotomy written by Yan Wang and published by Springer. This book was released on 2014-11-26 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spinal osteotomy techniques have been dramatically applied as a standard method for severe and rigid spinal deformity. Although clinical results indicate that patients who undergo osteotomy procedures typically experience well deformity correction and ameliorate the clinical appearance, aggressive peri-operative risks and follow-up complications are not rare. More meticulous and standard indication selection, osteotomy plan design and complication prevention strategy and outcome evaluation are critically needed for surgeon majored in spine deformity. The book Spinal Osteotomy is divided into sections that focus on principles of spinal osteotomy, technical and case illustration and outcomes and complications as well as computer navigation and other latest techniques. Each section is heavily illustrated and clearly written for ease of understanding. Orthopedic surgeons, neurosurgeon residents and fellows who want to focus on spinal deformity correction will find this instructive and invaluable.

Download or read book Aortic Diseases Involving Visceral Artery Clinical Therapeutic Management and Related Basic Research written by Xiangjiu Ding and published by Frontiers Media SA. This book was released on 2024-07-23 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aortic diseases (mainly including aortic dissection and aneurysm) are common but life-threatening entities. With development of surgical and endovascular techniques, treatment outcomes have been improved gradually. However, a lot of problems still require to be resolved. Aortic diseases in the region of visceral arteries are difficult to treat, especially for aortic dissection, which is usually associated with the narrow true lumen. Conventional open repair is associated with high trauma and high morbidity and mortality. Endovascular intervention has been applied in the last decade. Fenestration technique, chimney technique, and branched stent-grafts have been used for aortic aneurysms. For aortic dissection, management in the region of the visceral arteries is more complicated, and more techniques have been described. Besides these three methods, exclusion of the re-entry by vascular occluder, road block strategy, and candy-plug technique are also reported. However, these endovascular techniques vary in characteristics, procedures, and outcomes. There is no consensus on the optimal treatment for these complicated entities.

Download or read book Developing a Quantitative Means for Evaluating Single Isocenter Multi target SRS Plans written by Mary Oakey and published by . This book was released on 2019 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stereotactic Radiosurgery (SRS) is a common treatment method for multiple metastasis in the brain. SRS is prescribed to a high dose with low fractionation. Two properties of the dose distribution desired in SRS treatments are conformity and quick dose fall off. A common means of evaluating these properties is the Paddick Conformity Index, the Paddick Dose Gradient Index, and the RTOG Conformity Index. With the advances in multi-leaf collimators (MLCs) design, new means of treatment have been developed; this include Single Isocenter Multi-Target SRS (SIMT SRS). SIN'IT SRS differs from SRS in that it utilizes a single isocenter and treats all of the lesions in one plan. This single isocenter approach allows for a lower treatment time and less monitor units (MUs) delivered to the patient. Evaluating and comparing SINIT SRS plans can become difficult due to the fact that the isodose lines from one lesion, particularly the 50% isodose line, often intersects with another lesion. This complicates the analysis of both the dose fall off and conformity of each lesion. The purpose of this project is to develop a quantitative means to evaluate the conformity and dose fall off of an Single Isocenter Multi-Target SRS plan. For this project, a standard patient was created with seven randomized spherical targets varying in diameters (8mm-20mm). Good, intermediate, and bad plans were generated for each size target for this patient using Raystation v8A SPI. Each plan uses 0.1x0.1x0.1 cc dose grid, 9 non-coplanar arcs, the same arc angles, and a single isocenter. Each lesion was prescribed to 20 Gy for a single fraction To evaluate the dose distribution for each plan, the volume of 12 Gy (V12), volume of 10 Gy (VIO), and volume of 20 Gy (V20) in the brain were analyzed. These dose volumes were selected because an accumulation of these doses can lead to radionecrosis (RN) which has been used as a common indicator to evaluate the generated plans. [I] Two methods have been used to analyze the generated plans; the first analysis was done by combining the individual planning target volumes (P TVs) to one large PTV. Then the Paddick Conformity Index (PCI) and Paddick Dose Gradient Index (PGI) were applied to the combined dose statistics. The second method involved determining a defined volume to be applied to each target lesion. This volume was the exact area where the conformity and dose fall off were evaluated. The defined volume was determined by measuring from the centroid of a target to the 50% isodose line in multiple directions. The expansion volume was calculated to be within a 95% confidence interval of the mean for each size. Once the expansion volume was created, the previously mentioned indices were applied to it. It was observed that both the composite method and the expansion method are able to distinguish the difference in quality between plans. There seemed to be a trend occurring between target size and expansion volume; but, because only four expansion volumes were used in this study a conclusion cannot be drawn on this. It was noted that the PCI and PGI for the smaller lesions were significantly impacted by plan quality versus the larger lesions. Contrary to other studies, we found no observable relationship between target coverage and the distance from the treatment isocenter. Overall, the two methods proposed can be applied in a clinical setting various types of cases.