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seismic Reflection Characteristics of Naturally-Induced subsidence Affecting Transportation

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Journal of China University of Geosciences 2009年第3期20卷 496-512页

作者： richard D miller Jianghai Xia Don W steeples Kansas Geological survey The University of Kansas Lawrence KS 66047 USA Department of Geology The University of Kansas Lawrence KS 66047 USA

High-resolution seismic reflections have been used effectively to investigate sinkholes formed from the dissolution of a bedded salt unit found throughout most of Central Kansas. surface subsidence can have devastating effects on transportation structures. Roads, rails, bridges, and pipelines can even be dramatically affected by minor ground instability. Areas susceptible to surface subsidence can put public safety at risk. subsurface expressions significantly larger than surface depressions are consistently observed on seismic images recorded over sinkholes in Kansas. Until subsidence reaches the ground surface, failure appears to be controlled by compressional forces evidenced by faults with reverse orientation. Once a surface depression forms or dissolution of the salt slows or stops, subsidence structures are consistent with a tensional stress environment with prevalent normal faults. Detecting areas of rapid subsidence potential, prior to surface failure, is the ultimate goal of any geotechnical survey where the ground surface is susceptible to settling. seismic reflection images have helped correlate active subsidence to dormant paleofeatures, project horizontal growth of active sinkholes based on subsurface structures, and appraise the risk of catastrophic failure.

关键词： shallow seismic reflection imaging subsidence sinkhole.

Digital Equity and school Leadership in a Post-Digital World

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ECNU Review of Education 2024年第3期7卷 762-783页

作者： Katrina Liu Rebecca Tschinkel richard miller University of Nevada Las Vegas

Purpose:This study analyzes digital equity realities in U.s.K-12 schools and the role that school leadership plays in digital ***/Approach/Methods:Based on selwyn's conception of technology as three interlocking elements(access,educational practices,and social context),we applied the ideals of equity and social justice to each of the three elements to conceptualize a framework of digital equity,situating school practice in the larger social,cultural,and political context of the United *** by this framework,we conducted a systematic literature review of the current state of digital equity and school leadership in K-12 ***:The findings demonstrate that U.s.K-12 schools face digital inequity issues,including inequitable access to technology,exclusionary and punitive educational practices using technology,and an unjust social context for technology in *** findings indicate that school leadership plays an important role in digital ***:Based on these findings,we present a framework to assist K-12 leaders in enhancing digital equity,including addressing educational inequities and creating an inclusive social context for the school,ensuring equitable accessibility to technology in schools,and supporting teachers in developing meaningful and equitable practices using technology to address the opportunity gaps encountered by marginalized learners.

关键词： Critical Race Theory digital equity K-12 schools school leadership technology integration

Evaluation of utility in shoulder pathology:Correlating the American shoulder and Elbow surgeons and Constant scores to the EuroQoL

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World Journal of Orthopedics 2012年第3期3卷 20-24页

作者： Blaine T Bafus richard E Hughes Bruce s miller James E Carpenter Department of Orthopaedic surgery Cleveland Clinic Foundation Cleveland OH 44115-2325 United States Department of Orthopaedic surgery University of Michigan Ann Arbor MI 48109-2200 United States

AIM: To study whether health utility scores can be derived from shoulder-specific ***: Authors investigated two questions:(1) do the American shoulder and Elbow surgeons(AsEs) score and the Constant score correlate with the EuroQo L(EQ-5D), a measure of health utility?(2) can the AsEs and Constant scores be obtained from a complete study sample without bias? Thirty subjects with various shoulder diagnoses completed AsEs, Constant, and EQ-5D instruments. Pearson correlations were calculated to assess the associations between EQ-5D score and AsEs and Constant ***: The correlation between EQ-5D score and AsEs score was 0.60(P s 0.54 for EQ-5D and Constant scores(P ssion model containing AsEs score, Constant score, age, and gender failed to adequately predict EQ-5D. Moreover, 25% of patients meeting the inclusion criteria did not complete the AsEs questionnaire because they did not feel that specific questions, such as "do usual sport-list" and "throw ball overhand," applied to ***: Authors' results do not support the use of the AsEs and Constant scores in predicting EuroQ ol health utility values. However, the Constant score was more suitable for this patient population because all patients were able to complete it.

关键词： Utility EuroQoL American shoulder and Elbow surgeons score Constant score shoulder Outcomes

Model Change Active Learning in Graph-Based semi-supervised Learning

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1270-1298页

作者： Kevin s.miller Andrea L.Bertozzi Department of Mathematics University of CaliforniaLos Angeles520 Portola PlazaLos AngelesCA 90095USA

Active learning in semi-supervised classification involves introducing additional labels for unlabelled data to improve the accuracy of the underlying classifier.A challenge is to identify which points to label to best improve performance while limiting the number of new labels."Model Change"active learning quantifies the resulting change incurred in the classifier by introducing the additional label(s).We pair this idea with graph-based semi-supervised learning(ssL)methods,that use the spectrum of the graph Laplacian matrix,which can be truncated to avoid prohibitively large computational and storage *** consider a family of convex loss functions for which the acquisition function can be efficiently approximated using the Laplace approximation of the posterior *** show a variety of multiclass examples that illustrate improved performance over prior state-of-art.

关键词： Active learning Graph-based methods semi-supervised learning(ssL) Graph Laplacian

Modeling of Flow system Dynamics

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Journal of Thermal science 2004年第1期13卷 56-61页

作者： Andrzej miller Krzysztof Badyda Jaroslaw Dyjas Karol miller Institute of Heat Engineering Warsaw University of TechnologyNowowiejska 2500-665WarsawPolandInstitute of Heat EngineeringWarsaw University of TechnologyNowowiejska 2500-665WarsawPolandInstitute of Heat EngineeringWarsaw University of TechnologyNowowiejska 2500-665WarsawPolandSchool of Mechanical Engineering University of Western Australia35 Stirling HighwayCrawley WA 6009Australia

This paper presents non-linear and linear models of flow system of laboratory stand (semi-industrial scale) with pressurized fluidized bed boiler. The non-linear model belongs to the class of lumped parameter models. The linear model was obtained experimentally using a novel method for design of control systems in industrial plants - MIKOZ. This study has connection with comparison of various methods of mathematical modeling of flow systems frequently encountered in power equipment.

关键词： flow system modeling lumped parameter model frequency domain identification.

High-Frequency Rayleigh-Wave Method

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Journal of China University of Geosciences 2009年第3期20卷 563-579页

作者： richard D miller 徐义贤罗银河陈超刘江平 Julian Ivanov Kansas Geological survey The University of KansasLawrence KS 66047 USA Institute of Geophysics and Geomatics China University of Geosciences Kansas Geological survey The University of Kansas

High-frequency （〉2 Hz） Rayleigh-wave data acquired with a multichannel recording system have been utilized to determine shear （s）-wave velocities in near-surface geophysics since the early 1980s. This overview article discusses the main research results of high-frequency surface-wave techniques achieved by research groups at the Kansas Geological survey and China University of Geosciences in the last 15 years. The multichannel analysis of surface wave （MAsW） method is a non-invasive acoustic approach to estimate near-surface s-wave velocity. The differences between MAsW results and direct borehole measurements are approximately 15% or less and random. studies show that simultaneous inversion with higher modes and the fundamental mode can increase model resolution and an investigation depth. The other important seismic property, quality factor （Q）, can also be estimated with the MAsW method by inverting attenuation coefficients of Rayleigh waves. An inverted model （s-wave velocity or Q） obtained using a damped least-squares method can be assessed by an optimal damping vector in a vicinity of the inverted model determined by an objective function, which is the trace of a weighted sum of model-resolution and model-covariance matrices. Current developments include modeUng high-frequency Rayleigh-waves in near-surface media, which builds a foundation for shallow seismic or Rayleigh-wave inversion in the time-offset domain; imaging dispersive energy with high resolution in the frequency-velocity domain and possibly with data in an arbitrary acquisition geometry, which opens a door for 3D surface-wave techniques; and successfully separating surface-wave modes, which provides a valuable tool to perform s-wave velocity profiling with high-horizontal resolution.

关键词： Rayleigh wave dispersion high mode mode separation seismic modeling model appraisal.

THE CARE AND FEEDING OF A LONG-TERM INsTITUTIONAL COMMITMENT TO GREEN sTORMWATER INFRAsTRUCTURE: A CAsE sTUDY AT THE UNIVERsITY OF CONNECTICUT

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Journal of Green Building 2015年第3期10卷 1-13页

作者： Michael E.Dietz Chester L.Arnold Katie D.Milardo richard A.miller Center for Land Use Education and Research at the University of Connecticut Office of Environmental Policy at the University of Connecticut

In 2007,the Connecticut Department of Energy and Environmental Protection issued the first Total Maximum Daily Load(TMDL)in the country based not on a specific pollutant or pollutants,but on impervious cover(IC)(Arnold et al.,2010).The water body in question was Eagleville Brook,a small tributary of the Willimantic River in eastern Connecticut that drains a majority of the University of Connecticut *** university is in effect a small city within a largely rural *** as a result of this,there has been a history of“town-gown”tension and controversy with regard to the university’s impact on the water resources of the *** tension reached a climax in september 2005,when a quarter-mile stretch of the Fenton River,which drains the part of campus not in the Eagleville watershed,ran dry(Merritt,2005).Water quantity concerns were frequently joined by water quality concerns,with area residents complaining about the pollution of their drinking water(Morse,2002).Although the Fenton incident precipitated increased efforts on the part of the university to conserve water,efforts to improve the way that campus addressed stormwater issues lagged behind until the advent of the impervious cover *** the intervening eight years since the issuance of the“IC-TMDL”-practically the wink of an eye in the deliberate world of land use decision making-the University of Connecticut campus has become a showcase for green stormwater infrastructure(GsI)practices,also known as low impact development(LID)*** the IC-TMDL served as the catalyst,an environmental regulation,no matter how innovative,cannot in itself produce such dramatic *** this to occur a number of interconnected efforts have to come together,including leadership,research,monitoring,coordination,and education both within and without the university *** paper is an attempt to capture these key elements,consider why they worked(or didn’t),and provide a status report on green storm-water

关键词： green stormwater infrastructure low impact development university

size-dependent flight capacity and propensity in a range-expanding invasive insect

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Insect science 2022年第3期29卷 879-888页

作者： Chelsea Jahant-miller Russell miller Dylan Parry Forest Health Protection U.S.Forest ServiceCoeur d’AleneID83815USA school for Environment and sustainability Cooperative Institute for Great Lakes ResearchUniversity of MichiganAnn ArborMl48106USA Department of Environmental and Forest Biology College of Environmental Science and ForestryState University of New YorkSyracuseNY13210USA

For capital-breeding insects,all resources available for adult metabolic needs are accumulated during larval ***,body size at adult eclosion represents the total energetic capacity of the *** female capital breeders,body size is strongly correlated with lifetime fecundity,while in males,body size,which correlates with fitness,is less *** capital-breeding species with wingless,flightless,or dispersal-limited females,flight potential for male Lepidoptera has important implications for mate-finding and may be correlated with body *** low population densities,failure to mate has been identified as an important Allee effect and can drive the success or failure of invasive species at range edges and in species of conservation *** capital-breeding European subspecies of Lymantria dispar(L.),was introduced to North America in 1869 and now ranges across much of eastern North *** ***,females are flightless and mate-finding is entirely performed by *** quantified male *** flight capacity and propensity relative to morphological and physiological characteristics using fixed-arm flight mills.A range of male body sizes was produced by varying the protein content of standard artificial diets while holding other dietary components *** length,a proxy for body size,relative thorax mass,and forewing aspect were all important predictors of total flight distance and maximum *** results have important implications for mate-finding and invasion dynamics in *** and may apply broadly to other capital-breeding insects.

关键词： flight mill Lymantria dispar life-history invasion dynamics selective pressure

Geodynamics of oceanic plateau and plume head accretion and their role in Phanerozoic orogenic systems of China

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Geoscience Frontiers 2015年第1期6卷 49-59页

作者： Peter G.Betts Louis Moresi Meghan s.miller David Willis school of Earth Atmosphere and EnvironmentMonash UniversityClayton Campus school of Mathematical sciences Monash UniversityClayton Campus Department of Earth sciences University of Melbourne Department of Earth sciences University of Southern California

We present three 3D numerical models of deep subduction where buoyant material from an oceanic plateau and a plume interact with the overriding plate to assess the influence on subduction dynamics, trench geometry, and mechanisms for plateau accretion and continental growth. Transient instabilities of the convergent margin are produced, resulting in： contorted trench geometry; trench migration parallel with the plate margin; folding of the subducting slab and orocline development at the convergent margin; and transfer of the plateau to the overriding plate. The presence of plume material beneath the oceanic plateau causes fiat subduction above the plume, resulting in a ＂bowed＂ shaped subducting slab. In plateau-only models, plateau accretion at the edge of the overriding plate results in trench migration around the edge of the plateau before subduction is re-established directly behind the trailing edge of the plateau. The plateau shortens and some plateau material subducts. The presence of buoyant plume material beneath the oceanic plateau has a profound influence on the behaviour of the convergent margin. In the plateau ~ plume model, plateau accretion causes rapid trench advance. Plate convergence is accommodated by shearing at the base of the plateau and shortening in the overriding plate. The trench migrates around the edge of the plateau and subduction is re-established well behind the trailing edge of the plateau, effectively embedding the plateau into the overriding plate. A slab window forms beneath the accreted plateau and plume material is transferred from the subducting plate to the over- riding plate through the window. In all of the models, the subduction zone maintains a relatively stable configuration away from the buoyancy anomalies within the downgoing plate. The models provide a dynamic context for plateau and plume accretion in Phanerozoic accretionary orogenic systems such as the East China Orogen and the Central Asian Orogen （Altiads）, which ar

关键词： subduction Accretion Plateau Plume Central Asian Orogen Geodynamics