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2005

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Articles 5491 - 5520 of 5573

Full-Text Articles in Physical Sciences and Mathematics

A Tale Of Three Sisters: Reconstructing The Holocene Glacial History And Paleoclimate Record At Three Sisters Volcanoes, Oregon, United States, Shaun Andrew Marcott Jan 2005

A Tale Of Three Sisters: Reconstructing The Holocene Glacial History And Paleoclimate Record At Three Sisters Volcanoes, Oregon, United States, Shaun Andrew Marcott

Dissertations and Theses

At least four glacial stands occurred since 6.5 ka B.P. based on moraines located on the eastern flanks of the Three Sisters Volcanoes and the northern flanks of Broken Top Mountain in the Central Oregon Cascades. The youngest of these advances was the Little Ice Age (LIA) glaciation, which reached its maximum advance 150-200 yrs. B.P. and is defined by the large sharp crested and unvegetated moraines adjacent to the modern glaciers. In isolated locations less than 100 m downslope from these moraines, a second set of sparsely vegetated lateral moraines marks the Late-Neoglacial stand of the glaciers between 2.1 …

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Center For Coastal Resources Management Annual Report 2004, Center For Coastal Resources Management Jan 2005

Center For Coastal Resources Management Annual Report 2004, Center For Coastal Resources Management

Reports

No abstract provided.

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Little Creek Naval Amphibious Base Chesapeake Bay Shoreline, C. Scott Hardaway Jr., Donna A. Milligan, George R. Thomas, Linda M. Meneghini Jan 2005

Little Creek Naval Amphibious Base Chesapeake Bay Shoreline, C. Scott Hardaway Jr., Donna A. Milligan, George R. Thomas, Linda M. Meneghini

Reports

Little Creek Naval Amphibious Base (NAB) is located in Virginia Beach, Virginia. It’s shoreline along the southern Chesapeake Bay extends from Little Creek Inlet eastward approximately 1.5 miles to the NAB’s eastern boundary. In 1997, a study and report entitled “LITTLE CREEK NAVAL AMPHIBIOUS BASE, CHESAPEAKE BAY SHORELINE, SHORELINE MANAGEMENT PLAN and OFFICER’S BEACH SHORE PROTECTION EVALUATION” was produced by VIMS’s Shoreline Studies Program (Hardaway et al., 1997). The purpose of that report was to assess the rates and patterns of beach change along the Chesapeake Bay shoreline at Little Creek NAB in order to develop a shoreline management plan, …

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Shoreline Evolution Chesapeake Bay Shoreline City Of Norfolk, Va, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas, Travis R. Comer Jan 2005

Shoreline Evolution Chesapeake Bay Shoreline City Of Norfolk, Va, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas, Travis R. Comer

Reports

Shoreline evolution is the change in shore position through time. In fact, it is the material resistance of the coastal geologic underpinnings against the impinging hydrodynamic (and aerodynamic) forces. Along the shores of Chesapeake Bay, it is a process-response system. The processes at work include winds, waves, tides and currents, which together shape and modify coastlines by eroding, transporting and depositing sediments. The shore line is commonly plotted and measured to provide a rate of change, but it is as important to understand the geomorphic patterns of change. Shore analysis provides the basis to know how a particular coast has …

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Shoreline Evolution, City Of Hampton, Virginia, Hampton Roads, Chesapeake Bay, And Back River Shorelines, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas Jan 2005

Shoreline Evolution, City Of Hampton, Virginia, Hampton Roads, Chesapeake Bay, And Back River Shorelines, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas

Reports

Shoreline evolution is the change in shore position through time. In fact, it is the material resistance of the coastal geologic underpinnings against the impinging hydrodynamic (and aerodynamic) forces. Along the shores of Chesapeake Bay, it is a process-response system. The processes at work include winds, waves, tides and currents, which shape and modify coastlines by eroding, transporting and depositing sediments. The shore line is commonly plotted and measured to provide a rate of change but it is as important to understand the geomorphic patterns of change. Shore analysis provides the basis to know how a particular coast has changed …

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Shoreline Evolution, Chesapeake Bay Shoreline, City Of Virginia Beach, Virginia, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas, Travis R. Comer Jan 2005

Shoreline Evolution, Chesapeake Bay Shoreline, City Of Virginia Beach, Virginia, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas, Travis R. Comer

Reports

Shoreline evolution is the change in shore position through time. In fact, it is the material resistance of the coastal geologic underpinnings against the impinging hydrodynamic (and aerodynamic) forces. Along the shores of Chesapeake Bay, it is a process-response system. The processes at work include winds, waves, tides and currents, which shape and modify coastlines by eroding, transporting and depositing sediments. The shore line is commonly plotted and measured to provide a rate of change but it is as important to understand the geomorphic patterns of change. Shore analysis provides the basis to know how a particular coast has changed …

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Actively Engaging Students In Constructing Knowledge About Two-Dimensional Shapes Using Shape Makers, Shannon Driskell Dec 2004

Actively Engaging Students In Constructing Knowledge About Two-Dimensional Shapes Using Shape Makers, Shannon Driskell

Shannon O.S. Driskell

Driskell, S. (PI), University of Dayton Research Council Seed Grant, $3,900

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Topological Symmetry Groups Of Embedded Graphs In The 3-Sphere, Ramin Naimi, Erica Flapan, James Pommersheim, Harry Tomvakis Dec 2004

Topological Symmetry Groups Of Embedded Graphs In The 3-Sphere, Ramin Naimi, Erica Flapan, James Pommersheim, Harry Tomvakis

Ramin Naimi

No abstract provided.

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Thermal And Conductivity Studies Of Chitosan Acetate-Based Polymer Electrolytes, Zurina Osman Dec 2004

Thermal And Conductivity Studies Of Chitosan Acetate-Based Polymer Electrolytes, Zurina Osman

Zurina Osman

Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) have been employed to study the thermal stability of the chitosan acetate-based polymer electrolyte films. The glass transition temperature, T-g measurements confirm the conductivity enhancement effect by adding the plasticizer and salt in the chitosan acetate films

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The Cover Pebbling Number Of Graphs, Lara Pudwell, Betsy Crull, Tammy Cundiff, Paul Feltman, Glenn Hurlbert, Zsuzsanna Szaniszlo, Zsolt Tuza Dec 2004

The Cover Pebbling Number Of Graphs, Lara Pudwell, Betsy Crull, Tammy Cundiff, Paul Feltman, Glenn Hurlbert, Zsuzsanna Szaniszlo, Zsolt Tuza

Lara K. Pudwell

No abstract provided.

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Constraint Programming, John Hooker Dec 2004

Constraint Programming, John Hooker

John Hooker

No abstract provided.

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Gaas–Polymer Hybrids Formed By Surface-Initiated Atom-Transfer Radical Polymerization Of Methyl Methacrylate, Qj Cai, Df Guo, F.R. Zhu, Et Kang, Kg Neoh Dec 2004

Gaas–Polymer Hybrids Formed By Surface-Initiated Atom-Transfer Radical Polymerization Of Methyl Methacrylate, Qj Cai, Df Guo, F.R. Zhu, Et Kang, Kg Neoh

Professor ZHU, Fu Rong

No abstract provided.

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Runoff Production In The Upper Rio Chagres Watershed, Panama, Fred Ogden Dec 2004

Runoff Production In The Upper Rio Chagres Watershed, Panama, Fred Ogden

Fred L. Ogden

Runoff production in tropical watersheds is governed by a wide variety of potential sources and there have been few rigorous studies to date. The 414 km2 upper Río Chagres basin offers a unique opportunity to better understand the runoff production mechanisms in tropical watersheds through data analysis and modeling with rainfall and runoff data. Flow data and tipping bucket rain gage data are available at both the basin outlet (Chico gage) and for an 80.6 km2 internal basin location (Piedras gage). Modeling is performed using the Sacramento Soil Moisture Accounting Model (SAC-SMA), calibrated using data from 2000 and verified using …

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Flexible Top-Emitting Electroluminescent Devices On Polyethylene Terephthalate Substrates, Yq Li, Lw Tan, Xt Hao, Ks Ong, F.R. Zhu, Ls Hung Dec 2004

Flexible Top-Emitting Electroluminescent Devices On Polyethylene Terephthalate Substrates, Yq Li, Lw Tan, Xt Hao, Ks Ong, F.R. Zhu, Ls Hung

Professor ZHU, Fu Rong

No abstract provided.

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Storm Deposited Fish Debris In The Cretaceous Mowry Shale Near Vernal, Utah, Alvin Anderson, Bart Kowallis Dec 2004

Storm Deposited Fish Debris In The Cretaceous Mowry Shale Near Vernal, Utah, Alvin Anderson, Bart Kowallis

Bart J Kowallis

Isolated, lens-shaped accumulations of fi sh bones, scales, teeth, and coprolites in a sandy matrix occur along a few bedding planes within the Cretaceous Mowry Shale in an outcrop along Highway 191 north of Vernal, Utah. These accumulations have previously been interpreted to be large coprolites or regurgitate material, but are actually storm lag deposits in a sediment-starved basin. Accumulations (lenses) vary in size: the largest measured is 15 x 10 cm in plan view and 2 cm thick. Matrix in these lenses consist of fine-grained, well-rounded quartz grains that are absent in the surrounding shale layers. The disarticulated fossil …

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A General Low-Temperature Route For Large-Scale Fabrication Of Highly Oriented Zno Nanorod/Nanotube Arrays, Hd Yu, Zp Zhang, My Han, Xt Hao, F.R. Zhu Dec 2004

A General Low-Temperature Route For Large-Scale Fabrication Of Highly Oriented Zno Nanorod/Nanotube Arrays, Hd Yu, Zp Zhang, My Han, Xt Hao, F.R. Zhu

Professor ZHU, Fu Rong

No abstract provided.

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Applications Of Mickens Finite Differences To Several Related Boundary Value Problems, Ron Buckmire Dec 2004

Applications Of Mickens Finite Differences To Several Related Boundary Value Problems, Ron Buckmire

Ron Buckmire

No abstract provided.

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Effects Of Electron Irradiation On The Ferroelectric Properties Of Langmuir-Blodgett Copolymer Films, Christina Othon, Fred Bateman, Stephen Ducharme Dec 2004

Effects Of Electron Irradiation On The Ferroelectric Properties Of Langmuir-Blodgett Copolymer Films, Christina Othon, Fred Bateman, Stephen Ducharme

Christina M Othon

The effect of irradiation on the ferroelectric properties of Langmuir-Blodgett films of the copolymer poly(vinylidene fluoride-trifluoroethylene) was investigated using 1‐MeV electrons for doses from 0.16 to 1.10 MGy, where 1 Gray (Gy) = 100 rad. Irradiation causes a systematic decrease in the phase-transition temperature, crystallinity, and spontaneous polarization of the films. The crystallinity and spontaneous polarization of the films decreased by amounts proportional to the dose, both tending toward zero near a dose of 1.30 MGy. The ferroelectric-paraelectric phase-transition temperature, however, was only reduced by about 12%, indicating that the primary effect of irradiation was to convert a crystalline ferroelectric …

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Behavior Of Oil Droplets On An Electrified Solid Metal Surface Immersed In Ionic Surfactant Solutions, Samuel Morton, D. Keffer, R. Counce, D. Paoli Dec 2004

Behavior Of Oil Droplets On An Electrified Solid Metal Surface Immersed In Ionic Surfactant Solutions, Samuel Morton, D. Keffer, R. Counce, D. Paoli

Samuel A Morton

No abstract provided.

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Mra Frame Wavelets With Certain Regularities Associated With The Refinable Generators Of Shift Invariant Spaces, Tian-Xiao He Dec 2004

Mra Frame Wavelets With Certain Regularities Associated With The Refinable Generators Of Shift Invariant Spaces, Tian-Xiao He

Tian-Xiao He

In this paper, we will start the discussion with the refinable generators of the shift invariant (SI) spaces in L2 (R) that possess the largest possible regularities and required vanishing moments. For the pseudo-scaling generators, the corresponding MRA frame wavelets with certain regularities are constructed. In addition, the stability of the refinable SI spaces and the corresponding complementary spaces, biorthogonality of the SI spaces, and the approximation property of the spaces are also discussed.

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A Symbolic Operator Approach To Several Summation Formulas For Power Series, Tian-Xiao He, Leetsch Hsu, Peter Shiue, D. Torney Dec 2004

A Symbolic Operator Approach To Several Summation Formulas For Power Series, Tian-Xiao He, Leetsch Hsu, Peter Shiue, D. Torney

Tian-Xiao He

This paper deals with the summation problem of power series of the form Sba (f; x) = ∑a ≤ k ≤ b f(k) xk, where 0≤ a < b ≤ ∞, and {f(k)} is a given sequence of numbers with k Є [a, b) or f(t) is a differentiable function defined on [a, b). We present a symbolic summation operator with its various expansions, and construct several summation formulas with estimable remainders for Sba (f; x), by the aid of some classical interpolation series due to Newton, Gauss and Everett, respectively.

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Interaction Between The Dorsal And Ventral Pathways In Mental Rotation: An Fmri Study, Hideya Koshino, Patricia Carpenter, Timothy Keller, Marcel Just Dec 2004

Interaction Between The Dorsal And Ventral Pathways In Mental Rotation: An Fmri Study, Hideya Koshino, Patricia Carpenter, Timothy Keller, Marcel Just

Marcel Adam Just

No abstract provided.

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Imagining Material Versus Geometric Properties Of Objects: An Fmri Study, Sharlene Newman, Roberta Klatzky, Susan Lederman, Marcel Just Dec 2004

Imagining Material Versus Geometric Properties Of Objects: An Fmri Study, Sharlene Newman, Roberta Klatzky, Susan Lederman, Marcel Just

Marcel Adam Just

No abstract provided.

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Stereochemical Promiscuity In Artificial Transcriptional Activators, Brian Brennan, Sara Buhrlage, Aaron Minter, Anna Mapp Dec 2004

Stereochemical Promiscuity In Artificial Transcriptional Activators, Brian Brennan, Sara Buhrlage, Aaron Minter, Anna Mapp

Brian B. Brennan

Small molecule replacements of transcriptional activation domains are highly desirable targets due to their utility as mechanistic tools and their long-term therapeutic potential for a variety of human diseases. Here, we examine the ability of amphipathic isoxazolidines differing only in the placement of constituent side chains to function as transcriptional activation domains. The results reveal that precise positioning of functional groups within a conformationally constrained small molecule scaffold is not required for transcription function; rather, the balance of polarity and hydrophobicity within the scaffold is the more important determinant of transcription function. This suggests that a number of different organic …

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Amyloid Fibril Formation By Bovine Milk Kappa-Casein And Its Inhibition By The Molecular Chaperones Alpha-S And Beta-Casein, Mark Wilson, David Thorn, Agata Rekas, S. L Gras, Christopher Dobson, Sarah Meehan, Cait Macphee, M Sunde Dec 2004

Amyloid Fibril Formation By Bovine Milk Kappa-Casein And Its Inhibition By The Molecular Chaperones Alpha-S And Beta-Casein, Mark Wilson, David Thorn, Agata Rekas, S. L Gras, Christopher Dobson, Sarah Meehan, Cait Macphee, M Sunde

Mark R Wilson

No abstract provided.

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Heat Shock Protein 70 Inhibits Alpha-Synuclein Fibril Formation Via Preferential Binding To Prefibrillar Species, Mark Wilson, M. M. Dedmon, J. Christodoulou, Christopher Dobson Dec 2004

Heat Shock Protein 70 Inhibits Alpha-Synuclein Fibril Formation Via Preferential Binding To Prefibrillar Species, Mark Wilson, M. M. Dedmon, J. Christodoulou, Christopher Dobson

Mark R Wilson

No abstract provided.

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Lymphotoxin-Beta Receptor-Dependent Genes In Lymph Node And Follicular Dendritic Cell Transcriptomes, Mark Wilson, C. Huber, C. Thielen, Y. Fu, E. Heinen, A Aguzzi, G Miele Dec 2004

Lymphotoxin-Beta Receptor-Dependent Genes In Lymph Node And Follicular Dendritic Cell Transcriptomes, Mark Wilson, C. Huber, C. Thielen, Y. Fu, E. Heinen, A Aguzzi, G Miele

Mark R Wilson

No abstract provided.

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The Aeroacoustics Of Turbulent Coanda Jet Flows, Caroline Lubert Dec 2004

The Aeroacoustics Of Turbulent Coanda Jet Flows, Caroline Lubert

Caroline P Lubert

No abstract provided.

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Modeling Interaction Between Metacognition And Emotion In A Cognitive Architecture, Eva Hudlicka Dec 2004

Modeling Interaction Between Metacognition And Emotion In A Cognitive Architecture, Eva Hudlicka

Eva Hudlicka

While research in metacognition has grown significantly in the past 10 years, there has been a relative lack of research devoted to the focused study of the interactions between metacognition and affective processes. Computational models represent a useful tool which can help remedy this situation by constructing causal models of demonstrated correlational relationships, and by generating empirical hypotheses which can be verified experimentally. In this paper we describe enhancements to an existing cognitive–affective architecture that will enable it to perform a subset of metacognitive functions. We focus on modeling the role of a specific metacognitive factor, the feeling of confidence …

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Approximate Solutions For Magmon Propagation From A Reservoir, Tim Marchant Dec 2004

Approximate Solutions For Magmon Propagation From A Reservoir, Tim Marchant

Tim Marchant

A 1D partial differential equation (pde) describing the flow of magma in the Earth's mantle is considered, this equation allowing for compaction and distension of the surrounding matrix due to the magma. The equation has periodic travelling wave solutions, one limit of which is a solitary wave, called a magmon. Modulation equations for the magma equation are derived and are found to be either hyperbolic or of mixed hyperbolic/elliptic type, depending on the specific values of the wave number, mean height and amplitude of the underlying modulated wave. The periodic wave train is stable in the hyperbolic case and unstable …

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