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Search Results: 1 - 10 of 157201 matches for " William F. Darsow "
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Norms for copulas
William F. Darsow,Elwood T. Olsen
International Journal of Mathematics and Mathematical Sciences , 1995, DOI: 10.1155/s0161171295000536
Abstract: We consider several norms on the span of the set C of all copulas. Dominance and equivalence relationships among the norms are discussed, and completeness issues are addressed. The motivation for the study is discussed. Applications to the study of one parameter semigroups of copulas are also addressed.
Immunoglobulin E-mediated allergy plays a role in atopic eczema as shown in the atopy patch test
Ulf Darsow, Johannes Ring
World Allergy Organization Journal , 2008, DOI: 10.1097/wox.0b013e3181661472
Abstract:
Evaluation of Best Management Practices in Millsboro Pond Watershed Using Soil and Water Assessment Tool (SWAT) Model  [PDF]
Aditya Sood, William F. Ritter
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.25047
Abstract: The Inland Bays in southern Delaware (USA) are facing eutrophication due to the nutrient loading from its watershed. The source of nutrients in the watershed is predominantly agriculture. The Millsboro Pond, a sub-watershed within the Inland Bays basin, was modeled using the Soil and Water Assessment Tool (SWAT) model. It was found that the contribution of ground water from outside the watershed had a signifi-cant impact on the hydrology of the region. Once the model was calibrated and validated, five management scenarios were implemented, one at a time, to measure its effectiveness in reducing the nutrient loading in the watershed. Among the Best Management Practices (BMPs), planting winter cover crops on the agricul-ture land was the most effective method in reducing the nutrient loads. The second most effective method was to provide grassland riparian zones. The BMPs alone were not able to achieve the nutrient load reduc-tion as required by the Total Maximum Daily Loads (TMDLs). Two extra scenarios that involved in replac-ing agriculture land with forest, first with deciduous trees and then with high yielding trees were considered. It is suggested that to achieve the required TMDL for the watershed, some parts of the agricultural land may have to be effectively converted into the managed forest with some high yielding trees such as hybrid poplar trees providing cellulose raw material for bio fuels. The remaining agriculture land should take up the prac-tice of planting winter cover crops and better nutrient management. Riparian zones, either in form of forest or grasslands, should be the final line of defense for reducing nutrient loading in the watershed.
Developing a Framework to Measure Watershed Sustainability by Using Hydrological/Water Quality Model  [PDF]
Aditya Sood, William F. Ritter
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.311089
Abstract: A framework is built, wherein hydrological/water quality model is used to measure watershed sustainability. For this framework, watershed sustainability has been defined and quantified by defining social, environmental and biodiversity indicators. By providing weightage to these indicators, a “River Basin Sustainability Index” is built. The watershed sustainability is then calculated based on the concepts of reliability, resilience and vulnerability. The framework is then applied to a case study, where, based on watershed management principles, four land use scenarios are created in GIS. The Soil and Water Assessment Tool (SWAT) is used as a hydrology/water quality model. Based on the results the land uses are ranked for sustainability and policy implications have been discussed. This results show that landuse (both type and location) impact watershed sustainability. The existing land use is weak in environmental sustainability. Also, riparian zones play a critical role in watershed sustainability, although beyond certain width their contribution is not significant.
Using Mathematical Models in Decision Making Methodologies to Find Key Nodes in the Noordin Dark Network  [PDF]
William P. Fox, Sean F. Everton
American Journal of Operations Research (AJOR) , 2014, DOI: 10.4236/ajor.2014.44025
Abstract: A Dark Network is a network that cannot be accessed through tradition means. Once uncovered, to any degree, dark network analysis can be accomplished using the SNA software. The output of SNA software includes many measures and metrics. For each of these measures and metric, the output in ORA additionally provides the ability to obtain a rank ordering of the nodes in terms of these measures. We might use this information in decision making concerning best methods to disrupt or deceive a given dark network. In the Noordin Dark network, different nodes were identified as key nodes based upon the metric used. Our goal in this paper is to use methodologies to identify the key players or nodes in a Dark Network in a similar manner as we previously proposed in social networks. We apply two multi-attribute decision making methods, a hybrid AHP & TOPSIS and an average weighted ranks scheme, to analyze these outputs to find the most influential nodes as a function of the decision makers’ inputs. We compare these methods by illustration using the Noordin Dark Network with seventy-nine nodes. We discuss sensitivity analysis that is applied to the criteria weights in order to measure the change in the ranking of the nodes.
Multidimensional Median Filters for Finding Bumps in Chemical Sensor Datasets  [PDF]
Jeffrey C. Miecznikowski, Kimberly F. Sellers, William F. Eddy
Journal of Sensor Technology (JST) , 2012, DOI: 10.4236/jst.2012.21005
Abstract: Feature detection in chemical sensors images falls under the general topic of mathematical morphology, where the goal is to detect “image objects” e.g. peaks or spots in an image. Here, we propose a novel method for object detection that can be generalized for a k-dimensional object obtained from an analogous higher-dimensional technology source. Our method is based on the smoothing decomposition, Data = Smooth + Rough, where the “rough” (i.e. residual) object from a k-dimensional cross-shaped smoother provides information for object detection. We demonstrate properties of this procedure with chemical sensor applications from various biological fields, including genetic and proteomic data analysis.
Globalization and local response to epidemiological overlap in 21st century Ecuador
William F Waters
Globalization and Health , 2006, DOI: 10.1186/1744-8603-2-8
Abstract: Epidemiologic trends can be seen as part of broader processes related to globalization, but this does not imply that globalization is a monolithic force that inevitably and uniformly affects nations, communities, and households in the same manner. Rather, characteristics and forms of social organization at the subnational level can shape the way that globalization takes place. Thus, globalization has affected Ecuador in specific ways and is, at the same time, intimately related to the form in which the epidemiologic transition has transpired in that country.Ecuador is among neither the poorest nor the wealthiest countries and its situation may illuminate trends in other parts of the world.As in other countries, insertion into the global economy has not taken place in a vacuum; rather, Ecuador has experienced unprecedented social and demographic change in the past several decades, producing profound transformation in its social structure. Examples of local represent alternatives to centralized health systems that do not effectively address the complex overlay of traditional and emerging health problems.This paper begins with the premise that global public health is not at its core only a medical issue but is, rather, embedded in social, cultural, political, and economic structures and processes. Moreover, changes in those structures and processes involve the evolution of patterns of health and wellness, which can be described in terms of epidemiologic transition and overlap. While this transition is part of broader processes related to globalization, globalization is not necessarily an essentially monolithic force that inevitably, invariably, and uniformly affects nations, communities, and households in the same manner. Rather, local specificities and forms of organization can and do shape the way that both globalization and the epidemiologic transition take place. Thus, globalization has affected Ecuador in specific ways and is, at the same time, intimately related
Early evolution without a tree of life
William F Martin
Biology Direct , 2011, DOI: 10.1186/1745-6150-6-36
Abstract: This article was reviewed by Dan Graur, W. Ford Doolittle, Eugene V. Koonin and Christophe Malaterre.Biology currently lacks a robust and comprehensive description of early evolution. We should aim to fill that void, but in a language that operates with biology and chemistry, not with branching patterns in phylogenetic trees, versions of which based on informational genes are called the tree of life. Genomes attest unequivocally to the abundance of lateral gene transfer in microbial chromosome history, but current thinking on early evolution is still largely couched in the conceptual framework of trees. When it comes to getting a fuller grasp of microbial evolution, trees might be standing in the way more than they are actually helping us at the moment, because i) the overall relatedness of prokaryotic genomes is not properly described by any single tree, and ii) the relationship of eukaryotes to prokaryotes is also not tree-like in nature because the endosymbiotic origins of organelles introduces lineage mergers and genetic amalgamation into the evolutionary process. If we aim to deliver to science and society a complete picture of early evolution, then at some point we have to incorporate the origin of life into the larger picture of things, too, which means linking microbial evolution to the elements on early Earth. Overall those are fairly tall orders, but we have to start somewhere.Getting a better picture of early evolution is important for understanding our place in the larger scheme of things. Yet the further back we look in time, the less we know about the course of life's history. The evolutionary history of organisms visible to the naked eye -- plants and animals -- has a recurrently branching phylogeny that can be more or less accurately represented in the mathematical image of a bifurcating tree. Darwin's mechanisms of natural variation and natural selection were inferred from observations of macroscopic life, and those two mechanisms are still sufficie
O corpo do pai e a ra?a do filho: Noé, Schreber e a maldi??o do pacto
Pinar, William F.;
Revista Brasileira de Educa??o , 2008, DOI: 10.1590/S1413-24782008000100004
Abstract: the paper describes a textbook - a synoptic text summarizing research written for teachers - that enables teachers to complicate the curricular conversation in which they and their students are engaged. it reconstructs the primal scene, recalling the covenant between yahweh and the israelites in the old testament, arguing that white racism follows from that agreement, which involved the repression of father-son sexual desire and the projection of sexual difference upon "others". the reasons for reconstructing this scene of race in the west are curricular. it aims to help teachers understand the continuing and mutating forms of white racism.
Gerald Taylor, Diccionario normalizado y comparativo: Chachapoyas - Lamas, Paris (L'Harmattan) 1979.
William F. Harrison
Lexis , 1982,
Abstract: El artículo no presenta resumen.
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