341 research outputs found

    A Class of Transformations for Box‐Jenkins Seasonal Models

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/147030/1/rssc00953.pd

    Optimization viewpoint on Kalman smoothing, with applications to robust and sparse estimation

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    In this paper, we present the optimization formulation of the Kalman filtering and smoothing problems, and use this perspective to develop a variety of extensions and applications. We first formulate classic Kalman smoothing as a least squares problem, highlight special structure, and show that the classic filtering and smoothing algorithms are equivalent to a particular algorithm for solving this problem. Once this equivalence is established, we present extensions of Kalman smoothing to systems with nonlinear process and measurement models, systems with linear and nonlinear inequality constraints, systems with outliers in the measurements or sudden changes in the state, and systems where the sparsity of the state sequence must be accounted for. All extensions preserve the computational efficiency of the classic algorithms, and most of the extensions are illustrated with numerical examples, which are part of an open source Kalman smoothing Matlab/Octave package.Comment: 46 pages, 11 figure

    Book Reviews

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    Book reviews of: William F. Winter and the New Mississippi: A Biography. By Charles C. Bolton Jackson: University Press of Mississippi, 2013. Pp. vii, 368. Illustrations, map, acknowledgements, notes, index. 35.00cloth.ISBN:9781617037870.BornofConviction:WhiteMethodistsandMississippi’sClosedSociety.ByJosephT.Reiff.(NewYork:OxfordUniversityPress,2016.Acknowledgements,illustrations,map,notes,index.Pp.xxi,384.35.00 cloth. ISBN: 9781617037870. Born of Conviction: White Methodists and Mississippi’s Closed Society. By Joseph T. Reiff. (New York: Oxford University Press, 2016. Acknowledgements, illustrations, map, notes, index. Pp. xxi, 384. 35 Hardcover. ISBN: 9780190246815). In Katrina’s Wake: The U.S. Coast Guard and the Gulf Coast Hurricanes of 2005. By Donald L. Canney. (Gainesville: University Press of Florida, 2010. Foreword, notes, index. Pp. xv, 228. 27.50cloth.)Slavery,RaceandConquestintheTropic:Lincoln,DouglasandtheFutureofAmerica.ByRobertE.May.(NewYork:CambridgeUniversityPress,2013.Acknowledgements,illustrations,maps,notes,index.Pp.xi,296.27.50 cloth.) Slavery, Race and Conquest in the Tropic: Lincoln, Douglas and the Future of America. By Robert E. May. (New York: Cambridge University Press, 2013. Acknowledgements, illustrations, maps, notes, index. Pp. xi, 296. 80 cloth, 26.99paper,26.99 paper, 22 e-book. ISBN: 9780521132527.) Rivers of Sand: Creek Indian Emigration, Relocation, and Ethnic Cleansing in the American South. By Christopher D. Haveman. (Nebraska: University of Nebraska Press, 2016. Illustrations, preface, acknowledgments, notes on terminology, index. Pp. ix, 414. Trouble in Goshen: Plain Folk, Roosevelt, Jesus, and Marx in the Great Depression. By Fred C. Smith (Jackson: University Press of Mississippi, 2014. Acknowledgements, illustrations, map notes, index. Pp. xi, 214. 60.00cloth.ISBN:9781617039560.)BuildersofaNewSouth:Merchants,Capital,andtheRemakingofNatchez,1865−1914.ByAaronD.Anderson(Jackson:UniversityPressofMississippi,2013.Acknowledgments,illustrations,photographs,notes,graphics,index.Pp.279.60.00 cloth. ISBN: 9781617039560.) Builders of a New South: Merchants, Capital, and the Remaking of Natchez, 1865-1914. By Aaron D. Anderson (Jackson: University Press of Mississippi, 2013. Acknowledgments, illustrations, photographs, notes, graphics, index. Pp. 279. 40 cloth. ISBN: 978-1- 61703-667-5.) Adventurism and Empire: The Struggle for Mastery in the Louisiana- Florida Borderlands 1762-1803. By David Narrett. (Chapel Hill: The University of North Carolina Press, 2015. Acknowledgements, illustrations, notes, index. Pp. xi, 365. 45cloth,45 cloth, 44.99 e-book. ISBN: 978-1-4696-1833-3.) Empty Sleeves: Amputation in the Civil War South. By Brian Craig Miller. (Athens: University of Georgia Press, 2015. Illustrations, acknowledgments, appendix, notes, index. Pp. xvi, 257. 79.95cloth,79.95 cloth, 29.95 paper. ISBN: 0820343327.) Signposts: New Directions in Southern Legal History. By Sally E. Hadden and Patricia Hagler Minter, eds. (Athens and London: The University of Georgia Press, 2013. Acknowledgements, illustrations, index. Pp. xi, 480. 69.95cloth,69.95 cloth, 26.95 paper, 26.95ebook.ISBN:978−0−8203−4499−7.)TheColorofChrist:TheSonofGodandtheSagaofRaceinAmerica.ByEdwardJ.BlumandPaulHarvey.(ChapelHill:UniversityofNorthCarolinaPress,2012.Pp.325.26.95 ebook. ISBN: 978-0-8203-4499-7.) The Color of Christ: The Son of God and the Saga of Race in America. By Edward J. Blum and Paul Harvey. (Chapel Hill: University of North Carolina Press, 2012. Pp. 325. 32.50 Cloth. ISBN: 9780807835722.

    Chemical Weed and Brush Control: Suggestions for Rangeland

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    34 pp.,2 tables, 3 chartsMillions of acres of Texas rangeland support an excessive cover of woody plants and forbs. This publication lists herbicides to use for controlling brush and weeds on rangeland. It can help in developing a brush management program that gives optimum benefits to livestock and wildlife. See B-1466A for a 2007 update of information in this publication. A copy of B-1466A is included with each orde

    Education policy as an act of white supremacy: whiteness, critical race theory and education reform

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    The paper presents an empirical analysis of education policy in England that is informed by recent developments in US critical theory. In particular, I draw on ‘whiteness studies’ and the application of Critical Race Theory (CRT). These perspectives offer a new and radical way of conceptualising the role of racism in education. Although the US literature has paid little or no regard to issues outside North America, I argue that a similar understanding of racism (as a multifaceted, deeply embedded, often taken-for-granted aspect of power relations) lies at the heart of recent attempts to understand institutional racism in the UK. Having set out the conceptual terrain in the first half of the paper, I then apply this approach to recent changes in the English education system to reveal the central role accorded the defence (and extension) of race inequity. Finally, the paper touches on the question of racism and intentionality: although race inequity may not be a planned and deliberate goal of education policy neither is it accidental. The patterning of racial advantage and inequity is structured in domination and its continuation represents a form of tacit intentionality on the part of white powerholders and policy makers. It is in this sense that education policy is an act of white supremacy. Following others in the CRT tradition, therefore, the paper’s analysis concludes that the most dangerous form of ‘white supremacy’ is not the obvious and extreme fascistic posturing of small neonazi groups, but rather the taken-for-granted routine privileging of white interests that goes unremarked in the political mainstream

    A multi-decade record of high quality fCO2 data in version 3 of the Surface Ocean CO2 Atlas (SOCAT)

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    The Surface Ocean CO2 Atlas (SOCAT) is a synthesis of quality-controlled fCO2 (fugacity of carbon dioxide) values for the global surface oceans and coastal seas with regular updates. Version 3 of SOCAT has 14.7 million fCO2 values from 3646 data sets covering the years 1957 to 2014. This latest version has an additional 4.6 million fCO2 values relative to version 2 and extends the record from 2011 to 2014. Version 3 also significantly increases the data availability for 2005 to 2013. SOCAT has an average of approximately 1.2 million surface water fCO2 values per year for the years 2006 to 2012. Quality and documentation of the data has improved. A new feature is the data set quality control (QC) flag of E for data from alternative sensors and platforms. The accuracy of surface water fCO2 has been defined for all data set QC flags. Automated range checking has been carried out for all data sets during their upload into SOCAT. The upgrade of the interactive Data Set Viewer (previously known as the Cruise Data Viewer) allows better interrogation of the SOCAT data collection and rapid creation of high-quality figures for scientific presentations. Automated data upload has been launched for version 4 and will enable more frequent SOCAT releases in the future. High-profile scientific applications of SOCAT include quantification of the ocean sink for atmospheric carbon dioxide and its long-term variation, detection of ocean acidification, as well as evaluation of coupled-climate and ocean-only biogeochemical models. Users of SOCAT data products are urged to acknowledge the contribution of data providers, as stated in the SOCAT Fair Data Use Statement. This ESSD (Earth System Science Data) “living data” publication documents the methods and data sets used for the assembly of this new version of the SOCAT data collection and compares these with those used for earlier versions of the data collection (Pfeil et al., 2013; Sabine et al., 2013; Bakker et al., 2014). Individual data set files, included in the synthesis product, can be downloaded here: doi:10.1594/PANGAEA.849770. The gridded products are available here: doi:10.3334/CDIAC/OTG.SOCAT_V3_GRID

    Community syndicalism for the United States: preliminary observations on law and globalization in democratic production

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    two structural labor crises for developed economies: 1) The channeling of substantial investment into non-productive, paper commodities, reducing growth of production for use and therefore reducing available aggregate job creation; and 2) The continued exportation of industrial jobs to other lower cost jurisdictions, and outsourcing, automation, just-in-time production, and speed-ups associated with global supply chains. As a result, local communities and regional populations have destabilized and even collapsed with attendant social problems. One possible response is Community Syndicalism – local community finance and operating credit for industrial production combined with democratic worker ownership and control of production. The result would increase investment directly for production, retain jobs in existing population centers, promote job skilling, and retain tax bases for local services and income supporting local businesses, at the same time increasing support for authentic political democracy by rendering the exploitive ideology of the Public/Private distinction superfluous. Slowing job exportation may reduce the global race to the bottom of labor standards and differential wage rates reducing the return to producers of value and increasing the skew of income distribution undermining social wages and welfare worldwide. Community Syndicalism can serve as moral goal in an alternative production model focusing incentives on long term stability of jobs and community economic base

    How Do Humans Control Physiological Strain during Strenuous Endurance Exercise?

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    Background: Methodology/principal Findings: Conclusions/significance: Distance running performance is a viable model of human locomotion.To evaluate the physiologic strain during competitions ranging from 5-100 km, we evaluated heart rate (HR) records of competitive runners (n = 211). We found evidence that: 1) physiologic strain (% of maximum HR (%HRmax)) increased in proportional manner relative to distance completed, and was regulated by variations in running pace; 2) the %HRmax achieved decreased with relative distance; 3) slower runners had similar %HRmax response within a racing distance compared to faster runners, and despite differences in pace, the profile of %HRmax during a race was very similar in runners of differing ability; and 4) in cases where there was a discontinuity in the running performance, there was evidence that physiologic effort was maintained for some time even after the pace had decreased.The overall results suggest that athletes are actively regulating their relative physiologic strain during competition, although there is evidence of poor regulation in the case of competitive failures.2.308 SJR (2008) Q1, 60/1774 Medicine (miscellaneous), 19/144 Biochemistry, genetics and molecular biology (miscellaneous), 15/175 Agricultural and biological sciences (miscellaneous)UE
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