Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Computer Sciences (2356)
- Physics (1864)
- Environmental Sciences (1723)
- Engineering (1515)
- Life Sciences (1333)
-
- Social and Behavioral Sciences (1273)
- Chemistry (1267)
- Earth Sciences (1220)
- Mathematics (1026)
- Oceanography and Atmospheric Sciences and Meteorology (688)
- Statistics and Probability (543)
- Computer Engineering (496)
- Astrophysics and Astronomy (420)
- Geology (402)
- Electrical and Computer Engineering (386)
- Education (382)
- Arts and Humanities (374)
- Medicine and Health Sciences (350)
- Applied Mathematics (347)
- Sustainability (342)
- Business (306)
- Natural Resources Management and Policy (277)
- Natural Resources and Conservation (276)
- Databases and Information Systems (263)
- Water Resource Management (240)
- Law (201)
- Environmental Monitoring (198)
- Public Affairs, Public Policy and Public Administration (188)
- Software Engineering (188)
- Institution
-
- Selected Works (2519)
- University of Nebraska - Lincoln (691)
- University of South Florida (346)
- TÜBİTAK (319)
- Singapore Management University (308)
-
- Wright State University (299)
- University of Wollongong (281)
- SelectedWorks (263)
- Utah State University (245)
- Louisiana State University (210)
- Old Dominion University (197)
- Missouri University of Science and Technology (189)
- Clemson University (186)
- University of Nevada, Las Vegas (174)
- California Polytechnic State University, San Luis Obispo (146)
- Western University (133)
- Wayne State University (132)
- William & Mary (132)
- Portland State University (128)
- University of Kentucky (127)
- University of Texas at El Paso (122)
- University of Tennessee, Knoxville (117)
- San Jose State University (114)
- University of Arkansas, Fayetteville (105)
- Embry-Riddle Aeronautical University (104)
- Technological University Dublin (100)
- Edith Cowan University (98)
- Brigham Young University (97)
- University of Massachusetts Amherst (96)
- The University of Maine (89)
- Keyword
-
- For (96)
- Articles (92)
- Analysis (87)
- Sustainability (74)
- System (69)
-
- Climate change (67)
- Mathematics (65)
- Data (64)
- CMMB (61)
- Australia (59)
- Journal Articles (57)
- Model (55)
- Power (55)
- Systems (54)
- Conference Papers (53)
- Physics (52)
- Applied sciences (51)
- Human (51)
- Carbon (50)
- Simulation (47)
- Energy (43)
- Learning (42)
- Pure sciences (42)
- Water (42)
- Based (41)
- Security (41)
- Detection (40)
- Models (40)
- Chemistry (39)
- Image (39)
- Publication
-
- Research Collection School Of Computing and Information Systems (284)
- Theses and Dissertations (272)
- Computer Science & Engineering Syllabi (164)
- Studia UBB Geologia (145)
- Electronic Theses and Dissertations (142)
-
- Faculty of Science - Papers (Archive) (136)
- USF Tampa Graduate Theses and Dissertations (123)
- Faculty Publications (121)
- Electronic Thesis and Dissertation Repository (115)
- Turkish Journal of Electrical Engineering and Computer Sciences (100)
- Doctoral Dissertations (98)
- Nebraska Tractor Tests (91)
- Open Access Theses & Dissertations (89)
- LSU Master's Theses (85)
- Arun Bansil (84)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (82)
- Journal of Electrochemistry (78)
- S.C. Water Resources Conference (78)
- Professor Philip Ogunbona (76)
- Graduate Theses and Dissertations (75)
- Turkish Journal of Chemistry (75)
- Christian Binek (74)
- Masters Theses (73)
- LSU Doctoral Dissertations (72)
- Australian Institute for Innovative Materials - Papers (70)
- Physics Faculty Research & Creative Works (70)
- Dartmouth Scholarship (69)
- Articles (67)
- Physics Faculty Publications (67)
- Honors Theses (65)
- Publication Type
Articles 12001 - 12030 of 12196
Full-Text Articles in Physical Sciences and Mathematics
Analysis Of Discrete Choice Probit Models With Structured Correlation Matrices, Bhaskara Ravi
Analysis Of Discrete Choice Probit Models With Structured Correlation Matrices, Bhaskara Ravi
Mathematics & Statistics Theses & Dissertations
Discrete choice models are very popular in Economics and the conditional logit model is the most widely used model to analyze consumer choice behavior, which was introduced in a seminal paper by McFadden (1974). This model is based on the assumption that the unobserved factors, which determine the consumer choices, are independent and follow a Gumbel distribution, widely known as the Independence of irrelevant Alternatives (IIA) assumption. Alternate models that relax IIA assumption are the Generalized Extreme Value (GEV) models, which allow dependency between unobserved factors. However, GEV models do not incorporate all dependency patterns, other choice behaviors such as …
Critical Assessment Of Outcomes In Acute Aortic Dissection (Type A) At A Community Hospital: A 10 Year Review, Timothy S. Misselbeck, James K. Wu Md, Stephen Deturk Ba, Michael F. Szwerc Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Gary W. Szydlowski Md, Raymond L. Singer Md
Critical Assessment Of Outcomes In Acute Aortic Dissection (Type A) At A Community Hospital: A 10 Year Review, Timothy S. Misselbeck, James K. Wu Md, Stephen Deturk Ba, Michael F. Szwerc Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Gary W. Szydlowski Md, Raymond L. Singer Md
Department of Surgery
No abstract provided.
Continuous And Smooth Images Of Sets, Krzysztof Ciesielski
Continuous And Smooth Images Of Sets, Krzysztof Ciesielski
Faculty & Staff Scholarship
This note shows that if a subset S of R is such that some continuous function f from R to R has the property "f[S] contains a perfect set," then some infinitely many times differentiable function g (from R to R) has the same property. Moreover, if f[S] is nowhere dense, then the g can have the stronger property "g[S] is perfect." The last result is used to show that it is consistent with ZFC (the usual axioms of set theory) that for each subset S of R of cardinality continuum there exists an infinitely many times differentiable function …
Functions Continuous On Twice Differentiable Curves, Discontinuous On Large Sets, Krzysztof Ciesielski
Functions Continuous On Twice Differentiable Curves, Discontinuous On Large Sets, Krzysztof Ciesielski
Faculty & Staff Scholarship
We provide a simple construction of a function F:R2-->R discontinuous on a perfect set P, while having continuous restrictions F|C for all twice differentiable curves C. In particular, F is separately continuous and linearly continuous. While it has been known that the projection \pi[P] of any such set P onto a straight line must be meager, our construction allows \pi[P] to have arbitrarily large measure. In particular, P can have arbitrarily large 1-Hausdorff measure, which is the best possible result in this direction, since any such P has Hausdorff dimension at most 1.
Geometric Graph Theory And Wireless Sensor Networks, Deniz Sarioz
Geometric Graph Theory And Wireless Sensor Networks, Deniz Sarioz
Dissertations, Theses, and Capstone Projects
In this work, we apply geometric and combinatorial methods to explore a variety of problems motivated by wireless sensor networks. Imagine sensors capable of communicating along straight lines except through obstacles like buildings or barriers, such that the communication network topology of the sensors is their visibility graph. Using a standard distributed algorithm, the sensors can build common knowledge of their network topology.
We first study the following inverse visibility problem: What positions of sensors and obstacles define the computed visibility graph, with fewest obstacles? This is the problem of finding a minimum obstacle representation of a graph. This minimum …
Photocatalytic Hydrogen Production At Titania-Supported Pt Nanoclusters That Are Derived From Surface-Anchored Molecular Precursors, Rony S. Khnayzer, Lucas B. Thompson, Mikhail Zamkov, Shane Ardo, Gerald J. Meyer, Catherine J. Murphy, Felix N. Castellano
Photocatalytic Hydrogen Production At Titania-Supported Pt Nanoclusters That Are Derived From Surface-Anchored Molecular Precursors, Rony S. Khnayzer, Lucas B. Thompson, Mikhail Zamkov, Shane Ardo, Gerald J. Meyer, Catherine J. Murphy, Felix N. Castellano
Physics and Astronomy Faculty Publications
Degussa P-25 TiO2 bearing surface-anchored Pt(dcbpy)Cl-2 [dcbpy = 4,4'-dicarboxylic acid-2,2'-bipyridine] prepared with systematically varied surface coverage produced Pt-0 nanoparticles under bandgap illumination in the presence of methanol hole scavengers. Energy-dispersive X-ray spectroscopy confirmed the presence of elemental platinum in the newly formed nanoparticles during scanning transmission electron microscopy (STEM) eleriments. According to the statistical analysis of numerous STEM images, the Pt-0 nanoclusters were distributed in a segregated manner throughout the titania surface, ranging in size from 1 to 3 nm in diameter. The final achieved nanoparticle size and net hydrogen production were determined as a function of the Pt(dcbpy)Cl-2 surface …
Acth Promotes Osteogenesis Of Rat Mesenchymal Stem Cells Through The Melanocortin-2 Receptor, Jodi F. Evans Ph.D., Sylvana Rodriguez, Louis Ragolia
Acth Promotes Osteogenesis Of Rat Mesenchymal Stem Cells Through The Melanocortin-2 Receptor, Jodi F. Evans Ph.D., Sylvana Rodriguez, Louis Ragolia
Faculty Works: BCES (1999-2023)
Adrenocorticotropin Hormone (ACTH) is an endocrine hormone that is secreted by the pituitary and stimulates the secretion of cortisol from the adrenal cortex. It is among the several melanocortin peptide hormones that are derived from proopiomelanocortin (POMC) such as α-melanocyte stimulating hormone (α-MSH), γ-MSH and the endorphins. ACTH is also produced by cells outside the central nervous system and has been found to play a role in osteogenesis. Using mesenchymal stem cells (MSC) obtained from bone marrow of the Wystar Kyoto (WKY) rat, we confirmed that ACTH increases osteogenesis in a dosedependent manner. Immunoblot of crude membrane fractions was used …
Reuse: Creating A Next Life For Common Items, Roslynn Brain, H. Waldbillig
Reuse: Creating A Next Life For Common Items, Roslynn Brain, H. Waldbillig
Environment and Society Faculty Publications
If you are looking for ways to save money and add creative flair to your daily life, reusing everyday items you are likely to throw away could be the answer! We produce an average of 4.4 pounds each of trash a day in the U.S., which amounts to 1,600 pounds per person each year (Environmental Protection Agency, 2011). This yearly waste produced by each one of us is more than the typical weight of a Bison, America’s largest land animal! Often overshadowed by recycling, reusing is a zero-impact technique for waste prevention. By using a product or item in its …
Fostering University-Wide Sustainable Behaviors Through Service Learning: A Classroom Transition From Theory To Real World Application, Roslynn Brain
Fostering University-Wide Sustainable Behaviors Through Service Learning: A Classroom Transition From Theory To Real World Application, Roslynn Brain
Environment and Society Faculty Publications
No abstract provided.
Sustainability Cultural Indicators, J. Callewaert, Roslynn Brain, L. C. Malan
Sustainability Cultural Indicators, J. Callewaert, Roslynn Brain, L. C. Malan
Environment and Society Faculty Publications
No abstract provided.
Vermicomposting! Sustain Your Life: Utah State University Extension Sustainability, Roslynn Brain, H. Waldbillig, K. Ladd, J. Greene
Vermicomposting! Sustain Your Life: Utah State University Extension Sustainability, Roslynn Brain, H. Waldbillig, K. Ladd, J. Greene
Environment and Society Faculty Publications
No abstract provided.
Stability Indices For Constrained Self-Adjoint Operators, Todd Kapitula, Keith Promislow
Stability Indices For Constrained Self-Adjoint Operators, Todd Kapitula, Keith Promislow
University Faculty Publications and Creative Works
A wide class of problems in the study of the spectral and orbital stability of dispersive waves in Hamiltonian systems can be reduced to understanding the so-called "energy spectrum", that is, the spectrum of the second variation of the Hamiltonian evaluated at the wave shape, which is constrained to act on a closed subspace of the underlying Hilbert space. We present a substantially simplified proof of the negative eigenvalue count for such constrained, self-adjoint operators, and extend the result to include an analysis of the location of the point spectra of the constrained operator relative to that of the unconstrained …
Coconuts And The Emergence Of Violence In Sulu: Beyond Resource Competitionpparadigms, Yancey Orr
Coconuts And The Emergence Of Violence In Sulu: Beyond Resource Competitionpparadigms, Yancey Orr
Environmental Science and Policy: Faculty Publications
No abstract provided.
Multi-Payload Measurement Of Transverse Velocity Shears In The Topside Ionosphere, E. T. Lundberg, P. M. Kintner, Kristina A. Lynch, M. R. Mella
Multi-Payload Measurement Of Transverse Velocity Shears In The Topside Ionosphere, E. T. Lundberg, P. M. Kintner, Kristina A. Lynch, M. R. Mella
Dartmouth Scholarship
Using a multi-payload sounding rocket mission, we present the first direct measurement of velocity shear in the topside auroral ionosphere. In regions of large, ∼200 mV/m, transient electric fields we directly measure differences in the plasma drift velocity. From these differences, shear frequencies reaching ±6Hz are measured. These directly measured shears are compared with the shear inferred from single payload measurements. It is shown this traditional measurement of shear overestimates the shear frequency by a factor of two for this event, highlighting the importance of the temporal component of near-DC electric field structures. Coincident with these strong fields and shears …
A Geophysical Investigation Of The Northeastern Rim Of The St. Martin Impact Structure, Manitoba, Canada, Vladimir B. Zivkovic
A Geophysical Investigation Of The Northeastern Rim Of The St. Martin Impact Structure, Manitoba, Canada, Vladimir B. Zivkovic
Theses and Dissertations
The St. Martin impact structure is a 40 Km diameter structure located in Manitoba, Canada lies in featureless, glaciated terrain lacking any surface expression of an impact structure. The age of the structure has been re-determined to range between 224.3 Ma to 241.4 Ma which nullified a previous hypothesis suggesting this impact was part of a multiple impact event. Within the proposed structural boundary two outcrops of Archean granite are present. The first outcrop is located in what has been identified as the central peak of the impact structure. The second outcrop lies along the northeastern boundary and is known …
Screen-Printing Of Ferrite Magnetic Nanoparticles Produced By Carbon Combustion Synthesis Of Oxides, Karen S. Martirosyan, Gamage Dannangoda, Eduard Galstyan, Dmitri Litvinov
Screen-Printing Of Ferrite Magnetic Nanoparticles Produced By Carbon Combustion Synthesis Of Oxides, Karen S. Martirosyan, Gamage Dannangoda, Eduard Galstyan, Dmitri Litvinov
Physics and Astronomy Faculty Publications and Presentations
The feasibility of screen-printing process of hard ferrite magnetic nanoparticles produced by carbon combustion synthesis of oxides (CCSO) is investigated. In CCSO, the exothermic oxidation of carbon generates a smolder thermal reaction wave that propagates through the solid reactant mixture converting it to the desired oxides. The complete conversion of hexaferrites occurs using reactant mixtures containing 11 wt. % of carbon. The BaFe12O19 and SrFe12O19 hexaferrites had hard magnetic properties with coercivity of 3 and 4.5 kOe, respectively. It was shown that the synthesized nanoparticles could be used to fabricate permanent magnet structures by consolidating them using screen-printing techniques.
Controlling Calibration Errors In Gravitational-Wave Detectors By Precise Location Of Calibration Forces, H. Daveloza, M Afrin Badhan, Mario C. Diaz, K. Kawabe, P. N. Konverski, M. Landry, R. L. Savage
Controlling Calibration Errors In Gravitational-Wave Detectors By Precise Location Of Calibration Forces, H. Daveloza, M Afrin Badhan, Mario C. Diaz, K. Kawabe, P. N. Konverski, M. Landry, R. L. Savage
Physics and Astronomy Faculty Publications and Presentations
We present results of finite element analysis simulations which could lead to more accurate calibration of interferometric gravitational wave detectors. Calibration and actuation forces applied to the interferometer test masses cause elastic deformation, inducing errors in the calibration. These errors increase with actuation frequency, and can be greater than 50% at frequencies above a few kilohertz. We show that they can be reduced significantly by optimizing the position at which the forces are applied. The Advanced LIGO [1] photon calibrators use a two-beam configuration to reduce the impact of local deformations of the test mass surface. The position of the …
A Data-Descriptive Feedback Framework For Data Stream Management Systems, Rafael J. Fernández Moctezuma
A Data-Descriptive Feedback Framework For Data Stream Management Systems, Rafael J. Fernández Moctezuma
Dissertations and Theses
Data Stream Management Systems (DSMSs) provide support for continuous query evaluation over data streams. Data streams provide processing challenges due to their unbounded nature and varying characteristics, such as rate and density fluctuations. DSMSs need to adapt stream processing to these changes within certain constraints, such as available computational resources and minimum latency requirements in producing results. The proposed research develops an inter-operator feedback framework, where opportunities for run-time adaptation of stream processing are expressed in terms of descriptions of substreams and actions applicable to the substreams, called feedback punctuations. Both the discovery of adaptation opportunities and the exploitation of …
Understanding The Emission From Semiconductor Nanoparticles, Beth Ann Manhat
Understanding The Emission From Semiconductor Nanoparticles, Beth Ann Manhat
Dissertations and Theses
This dissertation describes the synthesis and characterization of fluorescent semiconductor nanoparticles (NPs) in order to optimize their biomedical utility for imaging and sensing applications. While both direct and indirect bandgap semiconductor NPs have been studied, control over their emission properties vary. Quantum confinement (QC), which primarily controls the emission wavelength of nanosized semiconductors, dictates that as the size of semiconductor NPs decrease, the magnitude of the bandgap increases, resulting in changes in the observed emission wavelength: smaller NPs have a larger bandgap, and thus a bluer emission. However, surface, interfacial, or shell defects can act as non-radiative or radiative recombination …
Groundwater Surface Trends In The North Florence Dunal Aquifer, Oregon Coast, Usa, Sarah Rebecca Doliber
Groundwater Surface Trends In The North Florence Dunal Aquifer, Oregon Coast, Usa, Sarah Rebecca Doliber
Dissertations and Theses
The North Florence Dunal Aquifer is the only feasible source for drinking water for the coastal city of Florence, Oregon and Florence's Urban Growth Boundary. High infiltration rates and a shallow groundwater table leave the aquifer highly susceptible to contamination from septic tank effluent, storm runoff, chemical fertilizers and recreational ATV use throughout the dunes. Public interest in the quality and quantity of the aquifer water has been sparked since the City of Florence received a grant from the Environmental Protection Agency for a watershed protection and restoration project. Delineation of the shallow groundwater surface and its relationship to the …
Understanding Sand Mining On The Maha Oya: The Conflict Between Economic And Environmental Survival, Meredith Corea Talbert
Understanding Sand Mining On The Maha Oya: The Conflict Between Economic And Environmental Survival, Meredith Corea Talbert
Dissertations and Theses
River sand mining from the Maha Oya is the main source of income and a force that drives economic activity for residents along the river. This study takes place in Sri Lanka, there are three villages included in this project: Jambugaswatte, Janituspuraya and Thoppuwa. In Sri Lanka, sand serves as the main building material. It is used to make bricks, tiles, asphalt and concrete, therefore demanding a high market value. However, the over-extraction of sand comes along with significant environmental problems. These communities depend on the river in many ways and the health of the river directly corresponds to the …
Sustainability Education As A Framework For Enhancing Environmental Stewardship In Young Leaders: An Intervention At Tryon Creek Nature Day Camp, Andrea Nicole Lawrence
Sustainability Education As A Framework For Enhancing Environmental Stewardship In Young Leaders: An Intervention At Tryon Creek Nature Day Camp, Andrea Nicole Lawrence
Dissertations and Theses
UNESCO established Sustainability Education as a top priority when it declared 2005 - 2014 to be the global decade for sustainability. Sustainability education can be implemented in outdoor programs such as nature summer camps in order to build environmental stewardship and ecological literacy in counselors and campers. This study sought to determine the extent to which an ecology and leadership training given to assistant counselors at Tryon Creek State Natural Area day camp achieved the goals of sustainability education--for the assistant counselors to learn about ecology, develop stewardship attitudes and behaviors toward the environment, and become positive role models for …
Short-Term Plasticity At The Schaffer Collateral: A New Model With Implications For Hippocampal Processing, Andrew Hamilton Toland
Short-Term Plasticity At The Schaffer Collateral: A New Model With Implications For Hippocampal Processing, Andrew Hamilton Toland
Dissertations and Theses
A new mathematical model of short-term synaptic plasticity (STP) at the Schaffer collateral is introduced. Like other models of STP, the new model relates short-term synaptic plasticity to an interaction between facilitative and depressive dynamic influences. Unlike previous models, the new model successfully simulates facilitative and depressive dynamics within the framework of the synaptic vesicle cycle. The novelty of the model lies in the description of a competitive interaction between calcium-sensitive proteins for binding sites on the vesicle release machinery. By attributing specific molecular causes to observable presynaptic effects, the new model of STP can predict the effects of specific …
Long-Term Responses Of Phalaris Arundinacea And Columbia River Bottomland Vegetation To Managed Flooding, Tina Schantz Farrelly
Long-Term Responses Of Phalaris Arundinacea And Columbia River Bottomland Vegetation To Managed Flooding, Tina Schantz Farrelly
Dissertations and Theses
I sought to determine the effect of managed flooding on Phalaris arundinacea L. and other plant species distributions in a large wetland complex, Smith and Bybee Wetlands (SBW), in northwestern Oregon. Altered hydrology has reduced historically high spring flow and prematurely initiated the historic summer drying period at SBW. This alteration has increased the coverage of invasive plants (e.g., P. arundinacea) causing a decrease in native plant cover and thus degrading ecological functions. SBW managers installed a water control structure (WCS) between SBW and the Columbia Slough/River system to impound winter rainfall and thus approximate the ecological benefits that natural …
A Survey And Analysis Of Solutions To The Oblivious Memory Access Problem, Erin Elizabeth Chapman
A Survey And Analysis Of Solutions To The Oblivious Memory Access Problem, Erin Elizabeth Chapman
Dissertations and Theses
Despite the use of strong encryption schemes, one can still learn information about encrypted data using side channel attacks [2]. Watching what physical memory is being accessed can be such a side channel. One can hide this information by using oblivious simulation - hiding the true access pattern of a program. In this paper we will review the model behind oblivious simulation, attempt to formalize the problem and define a security game. We will review the major solutions pro- posed so far, the square root and hierarchical solutions, as well as propose a new variation on the square root solution. …
Controlling Nanoparticles Formation In Molten Metallic Bilayers By Pulsed-Laser Interference Heating, Mikhail Khenner, Sagar Yadavali, Ramki Kalyanaraman
Controlling Nanoparticles Formation In Molten Metallic Bilayers By Pulsed-Laser Interference Heating, Mikhail Khenner, Sagar Yadavali, Ramki Kalyanaraman
Mathematics Faculty Publications
The impacts of the two-beam interference heating on the number of core-shell and embedded nanoparticles and on nanostructure coarsening are studied numerically based on the non-linear dynamical model for dewetting of the pulsed-laser irradiated, thin (< 20 nm) metallic bilayers. The model incorporates thermocapillary forces and disjoining pressures, and assumes dewetting from the optically transparent substrate atop of the reflective support layer, which results in the complicated dependence of light reflectivity and absorption on the thicknesses of the layers. Stabilizing thermocapillary effect is due to the local thickness-dependent, steady- state temperature profile in the liquid, which is derived based on the mean substrate temperature estimated from the elaborate thermal model of transient heating and melting/freezing. Linear stability analysis of the model equations set for Ag/Co bilayer predicts the dewetting length scales in the qualitative agreement with experiment.
Summary Tables: City Of Virginia Beach, Virginia Shoreline Inventory Report, Marcia Berman, Harry Berquist, Sharon Killeen, Carl Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt
Summary Tables: City Of Virginia Beach, Virginia Shoreline Inventory Report, Marcia Berman, Harry Berquist, Sharon Killeen, Carl Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt
Reports
The Shoreline Inventory Summary Tables quantify observed conditions based on river systems, such as the combined length of linear features (e.g. shoreline miles surveyed, miles of bulkhead and revetment), the total number of point features (e.g. docks, boathouses, boat ramps) & total acres of polygon features (tidal marshes).
Summary Tables: 2012 Henrico County, Virginia Shoreline Inventory, Marcia Berman, Harry Berquist, Sharon Killeen, Carl H. Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt
Summary Tables: 2012 Henrico County, Virginia Shoreline Inventory, Marcia Berman, Harry Berquist, Sharon Killeen, Carl H. Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt
Reports
The Shoreline Inventory Summary Tables quantify observed conditions based on river systems, such as the combined length of linear features (e.g. shoreline miles surveyed, miles of bulkhead and revetment), the total number of point features (e.g. docks, boathouses, boat ramps) & total acres of polygon features (tidal marshes).
On The Influence Of Damping In Hyperbolic Equations With Parabolic Degeneracy, Ralph Saxton, Katarzyna Saxton
On The Influence Of Damping In Hyperbolic Equations With Parabolic Degeneracy, Ralph Saxton, Katarzyna Saxton
Ralph Saxton
This paper examines the effect of damping on a nonstrictly hyperbolic 2x2 system. It is shown that the growth of singularities is not restricted as in the strictly hyperbolic case where dissipation can be strong enough to preserve the smoothness of solutions globally in time. Here, irrespective of the stabilizing properties of damping, solutions are found to break down in finite time on a line where two eigenvalues coincide in state space.
Spatial Graphs With Local Knots, Ramin Naimi, Erica Flapan, Blake Mellor
Spatial Graphs With Local Knots, Ramin Naimi, Erica Flapan, Blake Mellor
Ramin Naimi
It is shown that for any locally knotted edge of a 3-connected graph in $S^3$, there is a ball that contains all of the local knots of that edge and is unique up to an isotopy setwise fixing the graph. This result is applied to the study of topological symmetry groups of graphs embedded in $S^3$.