Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Environmental Sciences (868)
- Computer Sciences (853)
- Physics (694)
- Engineering (595)
- Chemistry (541)
-
- Earth Sciences (504)
- Life Sciences (401)
- Mathematics (368)
- Social and Behavioral Sciences (293)
- Statistics and Probability (277)
- Education (248)
- Oceanography and Atmospheric Sciences and Meteorology (247)
- Science and Mathematics Education (204)
- Natural Resources and Conservation (177)
- Arts and Humanities (173)
- Geology (168)
- Natural Resources Management and Policy (155)
- Mechanical Engineering (148)
- Astrophysics and Astronomy (141)
- History (136)
- United States History (132)
- Energy Systems (131)
- Computer Engineering (129)
- History of Science, Technology, and Medicine (129)
- Other Mechanical Engineering (129)
- Water Resource Management (120)
- Electrical and Computer Engineering (116)
- Physical Chemistry (116)
- Databases and Information Systems (109)
- Institution
-
- University of Nebraska - Lincoln (621)
- TÜBİTAK (189)
- University of Nevada, Las Vegas (149)
- Selected Works (145)
- University of Wollongong (131)
-
- Wright State University (106)
- Missouri University of Science and Technology (104)
- Singapore Management University (104)
- COBRA (95)
- Old Dominion University (91)
- Louisiana State University (88)
- Dartmouth College (83)
- William & Mary (80)
- Brigham Young University (79)
- Chinese Chemical Society | Xiamen University (73)
- Utah State University (70)
- California Polytechnic State University, San Luis Obispo (68)
- Wayne State University (66)
- University of Colorado Law School (65)
- University of Kentucky (62)
- Air Force Institute of Technology (60)
- University of Massachusetts Amherst (59)
- The University of Maine (58)
- Syracuse University (51)
- Claremont Colleges (50)
- Portland State University (49)
- California State University, San Bernardino (48)
- Chulalongkorn University (48)
- Department of Primary Industries and Regional Development, Western Australia (48)
- University of Central Florida (47)
- Keyword
-
- Western Australia (32)
- Groundwater (31)
- Land use (31)
- Physics (26)
- Water quality (24)
-
- Plan (23)
- Bedrock (21)
- Condition (21)
- Kentucky (21)
- Land-use (21)
- CMMB (20)
- Outdoor education (19)
- Polymer Science (19)
- Eutectic alloys (18)
- Lead-bismuth alloys (18)
- Chemistry (17)
- Land tenure (17)
- Conservation easements (16)
- Data mining (16)
- Corrosion and anti-corrosives (15)
- Hydrology (15)
- Nuclear reactors — Materials — Testing (15)
- Public lands (15)
- Real property (15)
- Salinity (15)
- Coyote (14)
- Geology (14)
- Hydrogeology (14)
- Java (Computer program language) (14)
- Mathematics (14)
- Publication
-
- United States Department of Agriculture Wildlife Services: Staff Publications (133)
- Nebraska Tractor Tests (129)
- Theses and Dissertations (126)
- Faculty Publications (96)
- Research Collection School Of Computing and Information Systems (96)
-
- Faculty of Informatics - Papers (Archive) (93)
- Turkish Journal of Chemistry (80)
- Electronic Theses and Dissertations (77)
- Journal of Electrochemistry (73)
- Computer Science & Engineering Syllabi (53)
- Journal of Modern Applied Statistical Methods (52)
- LSU Master's Theses (49)
- Thai Environment (48)
- Theses Digitization Project (48)
- Turkish Journal of Physics (46)
- Physics Faculty Research & Creative Works (45)
- Computer Science Technical Reports (44)
- United States Geological Survey: Staff Publications (42)
- Theses (40)
- Dartmouth Scholarship (39)
- Publications (38)
- Dissertations (37)
- Dissertations, Theses, and Masters Projects (37)
- Masters Theses (37)
- Faculty of Science - Papers (Archive) (34)
- LSU Doctoral Dissertations (34)
- Turkish Journal of Mathematics (34)
- Physics Faculty Publications (33)
- School of Natural Resources: Faculty Publications (33)
- Physics (31)
- Publication Type
Articles 4381 - 4410 of 4447
Full-Text Articles in Physical Sciences and Mathematics
Quantum Mysteries Revisited Again, Padmanabhan Aravind
Quantum Mysteries Revisited Again, Padmanabhan Aravind
Padmanabhan K. Aravind
This paper describes a device, consisting of a central source and two widely separated detectors with six switch settings each, that provides a simple gedanken demonstration of the non-classical correlations that are the subject of Bell’s theorem without relying on either statistical effects or the occurrence of rare events. The mechanism underlying the operation of the device is revealed for readers with a knowledge of quantum mechanics.
Lactone Synthesis Via Biotransformations Of -Hydroxyamides, Thomas Goyne, Stephen Taylor, Carrie Arnold, Aaron Gerds, Nathan Ide, Keri Law, Dale Kling, Matthew Pridgeon, Lloyd Simons, James Vyvyan, Jennifer Yamaoka, Min-Ken Liao
Lactone Synthesis Via Biotransformations Of -Hydroxyamides, Thomas Goyne, Stephen Taylor, Carrie Arnold, Aaron Gerds, Nathan Ide, Keri Law, Dale Kling, Matthew Pridgeon, Lloyd Simons, James Vyvyan, Jennifer Yamaoka, Min-Ken Liao
Thomas Goyne
No abstract provided.
Thermodynamic Method For Prediction Of Surfactant Modified Oil Droplet Contact Angles, Samuel Morton, D. Keffer, R. Counce, D. Depaoli, M. Hu
Thermodynamic Method For Prediction Of Surfactant Modified Oil Droplet Contact Angles, Samuel Morton, D. Keffer, R. Counce, D. Depaoli, M. Hu
Samuel A Morton
No abstract provided.
Biorthogonal Spline Type Wavelets, Tian-Xiao He
Biorthogonal Spline Type Wavelets, Tian-Xiao He
Tian-Xiao He
Let ¢ be an orthonormal scaling function with approximation degree p - 1, and let Bn be the B-spline of order n. Then, spline type scaling functions defined by fn = f * Bn (n = 1, 2, ... ) possess higher approximation order, p+n-1, and compact support. The corresponding biorthogonal wavelet functions are also constructed. This technique is extended to the case of biorthogonal scaling function system. As an application of the method supplied in this paper, one can easily construct a sequence of pairs of biorthogonal spline type scaling functions from one pair of biorthogonal scaling functions or …
Imagery In Sentence Comprehension: An Fmri Study, Marcel Just, Sharlene Newman, Timothy Keller, Alice Mceleney, Patricia Carpenter
Imagery In Sentence Comprehension: An Fmri Study, Marcel Just, Sharlene Newman, Timothy Keller, Alice Mceleney, Patricia Carpenter
Marcel Adam Just
No abstract provided.
Students’ Problem-Solving Strategies With Fractions, Shannon Driskell
Students’ Problem-Solving Strategies With Fractions, Shannon Driskell
Shannon O.S. Driskell
Driskell, S. (PI), University of Dayton Research Council Seed Grant, $4,000
Microwave Thawing Of Cylinders., Tim Marchant
Microwave Thawing Of Cylinders., Tim Marchant
Tim Marchant
Microwave thawing of a cylinder is examined. The electromagnetic field is governed by Maxwell's equations, where the electrical conductivity and the thermal absorptivity are both assumed to depend on temperature. The forced heat equation governs the absorption and diffusion of heat where convective heating occurs at the surface of the cylinder, while the Stefan condition governs the position of the moving phase boundary. A semi-analytical model, which consists of ordinary differential equations, is developed using the Galerkin method. Semi-analytical solutions are found for the temperature, the electric-field amplitude in the cylinder and the position of the moving boundary. Two examples, …
Deep Tissue Imaging Approaches By Direct Capture Of Two-Photon Absorptionmacro To Nano, T. Ye, W. Wagner, Peifang Tian, G. Yurtsever, M. Fischer, W. Wagner
Deep Tissue Imaging Approaches By Direct Capture Of Two-Photon Absorptionmacro To Nano, T. Ye, W. Wagner, Peifang Tian, G. Yurtsever, M. Fischer, W. Wagner
Peifang Tian
No abstract provided.
Asymptotic Solitons For A Third-Order Kortweg-De Vries Equation, Tim Marchant
Asymptotic Solitons For A Third-Order Kortweg-De Vries Equation, Tim Marchant
Tim Marchant
Solitary wave interaction for a higher-order version of the Korteweg–de Vries (KdV) equation is considered. The equation is obtained by retaining third-order terms in the perturbation expansion, where for the KdV equation only first-order terms are retained. The third-order KdV equation can be asymptotically transformed to the KdV equation, if the third-order coefficients satisfy a certain algebraic relationship. The third-order two-soliton solution is derived using the transformation. The third-order phase shift corrections are found and it is shown that the collision is asymptotically elastic. The interaction of two third-order solitary waves is also considered numerically. Examples of an elastic and …
How The Brain Processes Causal Inferences In Text: A Theoretical Account Of Generation And Integration Component Processes Utilizing Both Cerebral Hemispheres, Robert Mason, Marcel Just
How The Brain Processes Causal Inferences In Text: A Theoretical Account Of Generation And Integration Component Processes Utilizing Both Cerebral Hemispheres, Robert Mason, Marcel Just
Marcel Adam Just
No abstract provided.
Pseudospectral Iterated Method For Differential Equations With Delay Terms, Jodi Mead, Barbara Zubik-Kowal
Pseudospectral Iterated Method For Differential Equations With Delay Terms, Jodi Mead, Barbara Zubik-Kowal
Jodi Mead
New efficient numerical methods for hyperbolic and parabolic partial differential equations with delay terms are investigated. These equations model a development of cancer cells in human bodies. Our goal is to study numerical methods which can be applied in a parallel computing environment. We apply our new numerical method to the delay partial differential equations and analyse the error of the method. Numerical experiments confirm our theoretical results.
Almost Alternating Harmonic Series, Ramin Naimi, Curtis Fesit
Almost Alternating Harmonic Series, Ramin Naimi, Curtis Fesit
Ramin Naimi
No abstract provided.
Model Development Techniques And Evaluation Methods For Prediction And Classification Of Consumer Risk In The Credit Industry, Jennifer Priestley, Satish Nargundkar
Model Development Techniques And Evaluation Methods For Prediction And Classification Of Consumer Risk In The Credit Industry, Jennifer Priestley, Satish Nargundkar
Jennifer L. Priestley
In this chapter, we examine and compare the most prevalent modeling techniques in the credit industry, Linear Discriminant Analysis, Logistic Analysis and the emerging technique of Neural Network modeling. K-S Tests and Classification Rates are typically used in the industry to measure the success in predictive classification. We examine those two methods and a third, ROC Curves, to determine if the method of evaluation has an influence on the perceived performance of the modeling technique. We found that each modeling technique has its own strengths, and a determination of the “best” depends upon the evaluation method utilized and the costs …
Cautionary Comments (Author Response), John Esteb, Anne Wilson
Cautionary Comments (Author Response), John Esteb, Anne Wilson
John Esteb
Reply to concerns about a safety factor in the paper, “A Solvent-Free Oxidation of Alcohols in an Organic Laboratory."
Note:Link is to the article in a subscription database available to users affiliated with Butler University. Appropriate login information will be required for access. Users not affiliated with Butler University should contact their local librarian for assistance in locating a copy of this article.
Natural Resources And The Public Estate, John Dernbach
Natural Resources And The Public Estate, John Dernbach
John C. Dernbach
No abstract provided.
Long-Range Downstream Effects Of Urban Runoff And Acid Mine Drainage In The Debed River, Armenia: Insights From Lead Isotope Modeling, Robert Kurkjian, Charles Dunlap, A. Flegal
Long-Range Downstream Effects Of Urban Runoff And Acid Mine Drainage In The Debed River, Armenia: Insights From Lead Isotope Modeling, Robert Kurkjian, Charles Dunlap, A. Flegal
Charles Dunlap
Lead concentrations and isotopic compositions measured along 80 km of the Debed River in the Republic of Armenia provide new insights into the geochemical and physical controls on riparian Pb transport by allowing comparison of the long-range, downstream impacts of acid mine drainage with runoff from an industrialized city. The modern background Pb concentration in Armenian surface waters is estimated to be ~0.01 lg/L, based on analyses of remote alpine rivers in Armenia. The lead concentration in the Debed River is 8 µg/L (800 times background) after passing through Vanadzor, the second largest industrial city in Armenia; it then decreases …
Semi-Analytical Solutions For One - And Two-Dimensional Pellet Problems., Tim Marchant
Semi-Analytical Solutions For One - And Two-Dimensional Pellet Problems., Tim Marchant
Tim Marchant
The problem of heat and mass transfer within a porous catalytic pellet in which an irreversible first–order exothermic reaction occurs is a much–studied problem in chemical–reactor engineering. The system is described by two coupled reaction–diffusion equations for the temperature and the degree of reactant conversion. The Galerkin method is used to obtain a semi–analytical model for the pellet problem with both one– and two–dimensional slab geometries. This involves approximating the spatial structure of the temperature and reactant–conversion profiles in the pellet using trial functions. The semi–analytical model is obtained by averaging the governing partial differential equations. As the Arrhenius law …
Alq3-Modified Indium Tin Oxide For Enhancing The Efficiency And Reliability Of Organic Light-Emitting Devices, Yf Liew, F.R. Zhu, Sj Chua, Jx Tang
Alq3-Modified Indium Tin Oxide For Enhancing The Efficiency And Reliability Of Organic Light-Emitting Devices, Yf Liew, F.R. Zhu, Sj Chua, Jx Tang
Professor ZHU, Fu Rong
No abstract provided.
Structural Correction Of Paleomagnetic Vectors Dispersed About Two Fold Axes And Application To The Duke Island (Alaska) Ultramafic Complex, Scott Bogue, C. Sherman Gromme
Structural Correction Of Paleomagnetic Vectors Dispersed About Two Fold Axes And Application To The Duke Island (Alaska) Ultramafic Complex, Scott Bogue, C. Sherman Gromme
Scott Bogue
A new analysis of paleomagnetic data from the mid-Cretaceous (∼110 Ma) ultramafic complex at Duke Island (southeast Alaska) supports large poleward transport of the Insular superterrane relative to North America consistent with the Baja British Columbia hypothesis. Previous paleomagnetic work has shown that the characteristic remanence of the ultramafic complex predates kilometer-scale deformation of the very well developed cumulate layering but that the layering was not horizontal everywhere before the folding. It is possible, however, to estimate paleohorizontal for the Duke Island ultramafic complex because the postremanence deformation of the intrusion occurred about two well-defined and spatially separate fold axes. …
An Analog And Mathematical Modeling Resource Catalog For Undergraduate Structural Geology Courses, Phillip Resor, John Stimac, Michelle Cooke, Juliet Crider, Dazhi Jiang, Basil Tikoff, Jamie Toro
An Analog And Mathematical Modeling Resource Catalog For Undergraduate Structural Geology Courses, Phillip Resor, John Stimac, Michelle Cooke, Juliet Crider, Dazhi Jiang, Basil Tikoff, Jamie Toro
Phillip G Resor
The Modeling Structural Processes Working Group of the recent NAGT Workshop: "Teaching Structural Geology in the 21st Century" (TSG21) presents a catalog of models used in the teaching of structural geology to undergraduate students. Structural geology models are simplified constructs of complex earth system processes that have long been known to engage students and enhance their intuition of the deformation of earth materials. We recognize four classes of models: conceptual models, data representation models (including maps, stereonets, three-dimensional renderings, and statistical descriptions), analog models (including experiments with rock and non-rock materials), and mathematical models (including analytical expressions and deterministic or …
Simple Epoxide Formation For The Organic Laboratory Using Oxone, John Esteb
Simple Epoxide Formation For The Organic Laboratory Using Oxone, John Esteb
John Esteb
We present an epoxide formation experiment for a second-semester organic chemistry laboratory. This oxidation utilizes Oxone, a commercially available oxidizing agent, in the industrially relevant process of epoxide formation. The oxidant performing the oxidation is dimethyldioxirane, which is formed in situ. This experiment demonstrates a simple synthesis of an epoxide and formation of a secondary oxidizing agent.
Note:Link is to the article in a subscription database available to users affiliated with Butler University. Appropriate login information will be required for access. Users not affiliated with Butler University should contact their local librarian for assistance in locating a copy of …
Rapid Two-Dimensional Optical Spectroscopy Through Acousto-Optic Pulse Shaping, W. Wagner, Peifang Tian, L. Chunqiang, J. Semmlow, Warren Warren
Rapid Two-Dimensional Optical Spectroscopy Through Acousto-Optic Pulse Shaping, W. Wagner, Peifang Tian, L. Chunqiang, J. Semmlow, Warren Warren
Peifang Tian
No abstract provided.
When Indexing Equals Compression: Experiments With Compressing Suffix Arrays And Applications, Roberto Grossi, Ankur Gupta, Jeffrey Vitter
When Indexing Equals Compression: Experiments With Compressing Suffix Arrays And Applications, Roberto Grossi, Ankur Gupta, Jeffrey Vitter
Ankur Gupta
Cubic Autocatalysis With Michaelis - Menten Kinetics: Semi-Analytical Solutions For The Reaction - Diffusion Cell, Tim Marchant
Cubic Autocatalysis With Michaelis - Menten Kinetics: Semi-Analytical Solutions For The Reaction - Diffusion Cell, Tim Marchant
Tim Marchant
Cubic-autocatalysis with Michaelis–Menten decay is considered in a one-dimensional reaction–diffusion cell. The boundaries of the reactor allow diffusion into the cell from external reservoirs, which contain fixed concentrations of the reactant and catalyst. The Galerkin method is used to obtain a semi-analytical model consisting of ordinary differential equations. This involves using trial functions to approximate the spatial structure of the reactant and autocatalyst concentrations in the reactor. The semi-analytical model is then obtained from the governing partial differential equations by averaging. The semi-analytical model allows steady-state concentration profiles and bifurcation diagrams to be obtained as the solution to sets of …
Introductory Combinatorics & Graph Theory, Joe Demaio, Virginia Watson
Introductory Combinatorics & Graph Theory, Joe Demaio, Virginia Watson
Joe DeMaio
Numerical Investigation Of Saturated Source Area Behavior At The Small Catchment Scale, Fred L. Ogden
Numerical Investigation Of Saturated Source Area Behavior At The Small Catchment Scale, Fred L. Ogden
Fred L. Ogden
The objective of this research is to explore the relationship between small catchment properties and the temporal growth and decay of saturated source areas (SSA). A simple physics-based hydrologic model, which we call the Sandbox model, is developed for this purpose. A thorough sensitivity analysis is undertaken to evaluate model response to variations in model parameters. Sandbox model output is compared to that from the semi-distributed conceptual model, TOPMODEL, a model with a wide spread acceptance. Plotting the temporal evolution of the extent of saturated source area versus catchment average soil water content dur- ing a number of wetting and …
On The Dynamics Of Puck Clustering Systems, S. Kazadi, M. Chung, B. Lee, R. Cho
On The Dynamics Of Puck Clustering Systems, S. Kazadi, M. Chung, B. Lee, R. Cho
Sanza Kazadi
Hyperspacings And The Estimation Of Information Theoretic Quantities, Erik G. Learned-Miller
Hyperspacings And The Estimation Of Information Theoretic Quantities, Erik G. Learned-Miller
Erik G Learned-Miller
The estimation of probability densities from data is widely used as an intermediate step in the estimation of entropy, Kullback-Leibler (KL) divergence, and mutual information, and for statistical tasks such as hypothesis testing. We propose an alternative to density estimation– partitioning a space into regions whose approximate probability mass is known–that can be used for the same purposes. We call these regions hyperspacings, a generalization of spacings in one dimension. After discussing one-dimensional spacings estimates of entropy and KL-divergence, we show how hyperspacings can be used to estimate these quantities (and mutual information) in higher dimensions. Our approach outperforms certain …
Statistical Models For Automatic Video Annotation And Retrieval, V. Lavrenko, S. L. Feng, R. Manmatha
Statistical Models For Automatic Video Annotation And Retrieval, V. Lavrenko, S. L. Feng, R. Manmatha
R. Manmatha
We apply a continuous relevance model (CRM) to the problem of directly retrieving the visual content of videos using text queries. The model computes a joint probability model for image features and words using a training set of annotated images. The model may then be used to annotate unseen test images. The probabilistic annotations are used for retrieval using text queries. We also propose a modified model - the normalized CRM - which substantially improves performance on a subset of the TREC Video dataset.
A Scale Space Approach For Automatically Segmenting Words From Historical Handwritten Documents, R. Manmatha, Jamie L. Rothfeder
A Scale Space Approach For Automatically Segmenting Words From Historical Handwritten Documents, R. Manmatha, Jamie L. Rothfeder
R. Manmatha
Many libraries, museums, and other organizations contain large collections of handwritten historical documents, for example, the papers of early presidents like George Washington at the Library of Congress. The first step in providing recognition/ retrieval tools is to automatically segment handwritten pages into words. State of the art segmentation techniques like the gap metrics algorithm have been mostly developed and tested on highly constrained documents like bank checks and postal addresses. There has been little work on full handwritten pages and this work has usually involved testing on clean artificial documents created for the purpose of research. Historical manuscript images, …