Download or read book Model Fusion for Improving Hypoxia Forecasts in Corpus Christi Bay TX USA A Study of Boosting and Historical Scenario Modeling written by Indu Chinta and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study aims to create more accurate and efficient near-real-time forecasts of hypoxia that will give researchers advance notice for manual sampling during hypoxic events. Hypoxic or dead zones, which occur when dissolved oxygen levels in water drop below 2 mg/L, are prevalent worldwide. An example of such an hypoxic zone forms intermittently in Corpus Christi Bay (CC Bay), Texas, a USEPA-recognized estuary of national significance. Hypoxia in CC Bay is caused by inflow of hypersaline waters that enter from adjacent bays and estuaries, natural fluctuations in oxygen levels due to the oxygen production-consumption cycle of the aquatic flora and fauna, seasonal fluctuations, and discharges from several wastewater treatment plants. The hypoxia forecasting method tested in this work involves a suite of data-driven model fusion techniques such as historical scenario modeling and boosting both a k-nearest neighbor (KNN) algorithm and the historical scenario model. Existing data-driven k-nearest neighbor and physics-based valve models are used as the basis for the model fusion. The historical scenario model combines the k-nearest neighbor algorithm with the valve model to predict the probability of hypoxia twenty-four hours ahead. Boosting involves training the model repeatedly on subsets of the training dataset. The results of the fused models are compared with those of the individual models to test the effectiveness of model fusion in predicting the estuarine conditions. The results showed that the valve model, which has been hitherto computing oxygen profiles, can be extended to forecast probabilities of hypoxia when combined with the k-nearest neighbor algorithm to form the historical scenario model. The findings also show that boosting significantly enhances the performance of the k-nearest neighbor algorithm and the historical scenario model, although further testing on more extensive continuous datasets is needed to verify the findings in other locations. The results show promise for model fusion to be effective for real-time forecasting in hypoxia-affected water bodies.
Download or read book Modeling Coastal Hypoxia written by Dubravko Justic and published by Springer. This book was released on 2017-05-03 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a snapshot of representative modeling analyses of coastal hypoxia and its effects. Hypoxia refers to conditions in the water column where dissolved oxygen falls below levels that can support most metazoan marine life (i.e., 2 mg O2 l-1). The number of hypoxic zones has been increasing at an exponential rate since the 1960s; there are currently more than 600 documented hypoxic zones in the estuarine and coastal waters worldwide. Hypoxia develops as a synergistic product of many physical and biological factors that affect the balance of dissolved oxygen in seawater, including temperature, solar radiation, wind, freshwater discharge, nutrient supply, and the production and decay of organic matter. A number of modeling approaches have been increasingly used in hypoxia research, along with the more traditional observational and experimental studies. Modeling is necessary because of rapidly changing coastal circulation and stratification patterns that affect hypoxia, the large spatial extent over which hypoxia develops, and limitations on our capabilities to directly measure hypoxia over large spatial and temporal scales. This book consists of 15 chapters that are broadly organized around three main topics: (1) Modeling of the physical controls on hypoxia, (2) Modeling of biogeochemical controls and feedbacks, and, (3) Modeling of the ecological effects of hypoxia. The final chapter is a synthesis chapter that draws generalities from the earlier chapters, highlights strengths and weaknesses of the current state-of-the-art modeling, and offers recommendations on future directions.
Download or read book Adapting to Climate Change written by W. Neil Adger and published by Cambridge University Press. This book was released on 2009-06-25 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest science and social science research on whether the world can adapt to climate change.
Download or read book Ecology of Harmful Algae written by E. Granéli and published by Springer Science & Business Media. This book was released on 2007-10-04 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harmful algal can cause a variety of deleterious effects, including the poisoning of fish and shellfish, habitat disruptions for many organisms, water discoloration, beach fouling, and even toxic effects for humans. In this volume, international experts provide an in-depth analysis of harmful algae topics and offer a comprehensive synthesis of the latest research in the field.
Download or read book The New York African Burial Ground written by and published by . This book was released on 2009 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wetlands and Natural Resource Management written by Jos T.A. Verhoeven and published by Springer Science & Business Media. This book was released on 2006-11-22 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a broad and well-integrated overview of recent major scientific results in wetland science and their applications in natural resource management issues. The contributors, internationally known experts, summarize the state of the art on an array of topics, divided into four broad areas: The Role of Wetlands for Integrated Water Resources Management: Putting Theory into Practice; Wetland Science for Environmental Management; Wetland Biogeochemistry; Wetlands and Climate Change Worldwide.
Download or read book Advances in the Studies of the Benthic Zone written by Luis Soto and published by BoD – Books on Demand. This book was released on 2020-06-10 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an unpretentious editing venture to fill the gap in our current knowledge on the ecological implications caused by anthropogenic disturbances upon benthic communities in several regions of the world, including the Western Atlantic, the Mediterranean Sea, and the Eastern Pacific Ocean, as well as the pristine environments of the Andes in South America. The common goal of the contributing authors in this book was to unravel the complex processes that make possible the life existence of bottom-living animals in different environmental scenarios. To achieve such a goal, the authors focus their attention on the emerging issues inherent to global climate change or the pollution of aquatic systems. These are all themes that might be of interest to scientists active in a wide range of oceanographic subdisciplines. Well-established researchers would appreciate the innovative approach adopted in each chapter of the book, which extends from the ecosystem level to refined molecular interpretations.
Download or read book Phonetics Theory and Application written by William R. Tiffany and published by McGraw-Hill Humanities, Social Sciences & World Languages. This book was released on 1977 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Death Investigations written by Arthur E. Westveer and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this publication is to consolidate the training material utilized in the Managing Death Investigation Course and Death Investigation Field Schools conducted by the Behavioural Science Unit, FBI Academy,
Download or read book From Antarctica to Outer Space written by Albert A. Harrison and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Antarctica to Outer Space: Life in Isolation and Confinement aims to revitalize and encourage behavioral research in spaceflight as well as in polar and comparable settings. It comprises a broad collection of papers that evolved from presentations at a three day conference entitled The Human Experience in Antarctica: Applications to Life in Space (The Sunnyvale Conference). This conference was co-sponsored by the Division of Polar Programs of the National Science Foundation and the National Aeronautics and Space Administration and held in 1987. The book provides, through firsthand accounts and research reviews, an introduction to the human facet in isolated and confined environments such as Antarctica, outer space, submarines, and remote national parks. The book discusses some of the theoretical issues underlying research on isolated and confined people, thus demonstrating the applicability of certain general theories of behavior. It also focuses on basic psychological and social responses to isolation and confinement. Studies whose primary purpose is to explore the effects of selection, training, and environmental design on human behavior and mission outcomes are discussed.
Download or read book Reproductive Sciences in Animal Conservation written by Pierre Comizzoli and published by Springer Nature. This book was released on 2019-08-30 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition emphasizes the environmental impact on reproduction, with updated chapters throughout as well as complete new chapters on species such as sharks and rays. This is a wide-ranging book that will be of relevance to anyone involved in species conservation, and provides critical perspectives on the real utility of current and emerging reproductive sciences. Understanding reproductive biology is centrally important to the way many of the world’s conservation problems should be tackled. Currently the extinction problem is huge, with up to 30% of the world’s fauna being expected to disappear in the next 50 years. Nevertheless, it has been estimated that the global population of animals in zoos encompasses 12,000 – 15,000 species, and we anticipate that every effort will be made to preserve these species for as long as possible, minimizing inbreeding effects and providing the best welfare standards available. Even if the reproductive biology community cannot solve the global biodiversity crisis for all wild species, we should do our best to maintain important captive populations. Reproductive biology in this context is much more than the development of techniques for helping with too little or too much breeding. While some of the relevant techniques are useful for individual species that society might target for a variety of reasons, whether nationalistic, cultural or practical, technical developments have to be backed up by thorough biological understanding of the background behind the problems.
Download or read book Liver Cancers written by Tim Cross and published by Springer. This book was released on 2018-12-12 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores in detail the primary liver cancers of hepatocellular carcinoma and cholangiocarcinoma examining the pathogenesis of disease along with diagnosis and current management options together with exploration of future treatment strategies and areas of controversy. Furthermore, the book highlights management of the common secondary malignancies and touches on benign liver tumours and how to best manage these. Written in a clear and didactic style, this volume includes summaries of the key learning points and questions so that the reader can gauge their knowledge and understanding. This book is aimed to broaden the knowledge base of primary care physicians, general physicians along with specialists in hepatology, oncology and hepato-biliary surgery
Download or read book Biotechnology and Production of Anti Cancer Compounds written by Sonia Malik and published by Springer. This book was released on 2017-04-21 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses cancers and the resurgence of public interest in plant-based and herbal drugs. It also describes ways of obtaining anti-cancer drugs from plants and improving their production using biotechnological techniques. It presents methods such as cell culture, shoot and root culture, hairy root culture, purification of plant raw materials, genetic engineering, optimization of culture conditions as well as metabolic engineering with examples of successes like taxol, shikonin, ingenol mebutate and podophylotoxin. In addition, it describes the applications and limitations of large-scale production of anti-cancer compounds using biotechnological means. Lastly, it discusses future economical and eco-friendly strategies for obtaining anti-cancer compounds using biotechnology.
Download or read book Towards Marine Ecosystem based Management in the Wider Caribbean written by Lucia Fanning and published by Amsterdam University Press. This book was released on 2011 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: An approach that encompasses the human and natural dimensions of ecosystems is one that the Wider Caribbean Region knows it must adopt and implement, in order to ensure the sustainable use of the region's shared marine resources. This volume contributes towards that vision, bringing together the collective knowledge and experience of scholars and practitioners within the Wider Caribbean to begin the process of assembling a road map towards marine ecosystem based management (EBM) for the region. It also serves a broader purpose of providing stakeholders and policy actors in each of the world's sixty-four Large Marine Ecosystems, with a comparative example of the challenges and information needs required to implement principled ocean governance generally and marine EBM in particular, at multiple levels. Additionally, the volume serves to supplement the training of graduate level students in the marine sciences by enhancing interdisciplinary understanding of challenges in implementing marine EBM.
Download or read book Capitalism and Environmental Collapse written by Luiz Marques and published by Springer Nature. This book was released on 2020-08-17 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book intends to be an alert to the fact that the curve measuring environmental costs against the economic benefits of capitalism has irreversibly entered into a negative phase. The prospect of an environmental collapse has been evidenced by the sciences and the humanities since the 1960s. Today, it imposes its urgency. This collapse differs from past civilizations in that it is neither local nor just civilizational. It is global and occurs at the broadest level of the biosphere, accelerated by the convergence of different socio-environmental crises, such as: Earth energy imbalance, climate change and global warming Sea-level rise Decrease and degradation of forests Collapse of terrestrial and aquatic biodiversity Floods, droughts, wildfires, and extreme weather events Degradation of soils and water resources Increase in pollution caused by fossil fuels and coal Increase in waste production and industrial intoxication The book is divided in two parts. In the first part it presents a comprehensive review of scientific data to show the already visible effects of each of the different environmental crises and its consequences to human life on Earth. In the second part, Luiz Marques critically discusses what he calls the three concentric illusions that prevent us from realizing the gravity of the current socio-environmental crises: the illusion of a sustainable capitalism, the illusion that economic growth is still capable of providing more well-being and the anthropocentric illusion. Finally, Marques argues that "fitting" back into the biosphere will only be possible if we dismantle the expansive socioeconomic gear that has shaped our societies since the 16th century by moving from a Social Contract to a Natural Contract, which takes into account the whole biosphere. According to him, the future society will be post-capitalist or it will not be a complex society, and even perhaps, we must fear, no society at all. “This book is backed up with the latest and best science and has made the complexities understandable for the average reader, all in a context of hope for the future.” - William J. Ripple, PhD, Distinguished Professor of Ecology, Director of the Alliance of World Scientists, Oregon State University
Download or read book Posterior Fossa Tumors written by Anthony J. Raimondi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that the functionally significant body of knowledge for a given medical specialty changes radically every 8 years. New specialties and "sub-specialization" are occurring at approximately an equal rate. Historically, established journals have not been able either to absorb this increase in publishable material or to extend their readership to the new specialists. International and national meetings, symposia and seminars, workshops, and newsletters suc cessfully bring to the attention of physicians within developing spe cialties what is occurring, but generally only in demonstration form without providing historical perspective, pathoanatomical corre lates, or extensive discussion. Page and time limitations oblige the authors to present only the essence of their material. Pediatric neurosurgery is an example of a specialty that has de veloped during the past 15 years. Over this period neurosurgeons have obtained special training in pediatric neurosurgery and then dedicated themselves primarily to its practice. Centers, Chairs, and educational programs have been established as groups of neuro in different countries throughout the world organized surgeons themselves respectively into national and international societies for pediatric neurosurgery. These events were both preceded and fol lowed by specialized courses, national and international journals, and ever-increasing clinical and investigative studies into all aspects of surgically treatable diseases of the child's nervous system.
Download or read book Introduction to Surgery for Students written by Rebecca A. Fisher and published by Springer. This book was released on 2017-08-03 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to surgery aims to provide a one-stop guide to the basics of surgery for surgical rotations, as well as providing information for aspiring surgeons on how to explore a surgical career and build your CV for surgical applications. It aims to be the go-to companion for any student shadowing in theatres, and a thorough guide for students wishing to spend more time in a specific specialty, conduct research and plan careers. Introduction to Surgery for Students is an edited collection of 31 chapters from a group of 80 medical students, junior doctors and consultant surgeons. Each chapter has been written by a team made up of at least one student and one senior, and has then been edited and reviewed by a medical student with a special interest in the topic. This near-peer style of writing allows our content to cater to a student’s needs at the right level, whilst having the expert input of surgeons who are leaders in their field.
