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 (1221)
- 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 (341)
- Business (305)
- Natural Resources Management and Policy (276)
- Natural Resources and Conservation (275)
- 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 10801 - 10830 of 12196
Full-Text Articles in Physical Sciences and Mathematics
Hilbert Polynomials And Strongly Stable Ideals, Dennis Moore
Hilbert Polynomials And Strongly Stable Ideals, Dennis Moore
Theses and Dissertations--Mathematics
Strongly stable ideals are important in algebraic geometry, commutative algebra, and combinatorics. Prompted, for example, by combinatorial approaches for studying Hilbert schemes and the existence of maximal total Betti numbers among saturated ideals with a given Hilbert polynomial, three algorithms are presented. Each of these algorithms produces all strongly stable ideals with some prescribed property: the saturated strongly stable ideals with a given Hilbert polynomial, the almost lexsegment ideals with a given Hilbert polynomial, and the saturated strongly stable ideals with a given Hilbert function. Bounds for the complexity of our algorithms are included. Also included are some applications for …
Growth Of Extensional Faults And Folds During Deposition Of An Evaporite-Dominated Half-Graben Basin; The Carboniferous Billefjorden Trough, Svalbard, Alvar Braathen, Karoline Bælum, Harmon Maher Jr., Simon J. Buckley
Growth Of Extensional Faults And Folds During Deposition Of An Evaporite-Dominated Half-Graben Basin; The Carboniferous Billefjorden Trough, Svalbard, Alvar Braathen, Karoline Bælum, Harmon Maher Jr., Simon J. Buckley
Geography and Geology Faculty Publications
Normal-sense movements along two major strands of the Billefjorden Fault Zone controlled sedimentation in the Carboniferous Billefjorden Trough. The Billefjorden Trough is a more than 2000 meters thick, west-dipping half-graben basin where accommodation was provided by combinations of extensional faulting and folding throughout the basin history. Whereas previous workers have interpreted several of these folds as due to Tertiary contraction, we argue that they developed during rifting, as extensional forced folds in the style described by other workers from rifts such as the Gulf of Suez. The present basin geometry indicates that accommodation was facilitated by a combination of fault …
Science Today In Verse, Hope Leman
Aerospace Section, Barbara A. Williams
Aerospace Section, Barbara A. Williams
Sci-Tech News
The Aerospace Section of the Engineering Division encourages communication and cooperation among information professionals concerned with aerospace, aeronautical and related technologies. In addition, it fosters dialog with entities such as NASA, the AIAA and other important sources of technical data and bibliographical services.
Sci-Tech Book News Reviews, Susan Fingerman
Chemistry Division, Marie Fraties-Block
From The Editor, Susan Fingerman
Science-Technology Division, Christine Whitaker
North Carolina Science Blogging Conference 2008, Christina Pikas
North Carolina Science Blogging Conference 2008, Christina Pikas
Sci-Tech News
No abstract provided.
Aerospace Section, Kathryn Breininger
Web Reviews, Lisa R. Johnston
Utk Geography Newsletter 12 (2011-2012), Department Of Geography
Utk Geography Newsletter 12 (2011-2012), Department Of Geography
UTK Geography Newsletter
No abstract provided.
Instability In A Generalized Keller–Segel Model, Patrick De Leenheer, Jay Gopalakrishnan, Erica Zuhr
Instability In A Generalized Keller–Segel Model, Patrick De Leenheer, Jay Gopalakrishnan, Erica Zuhr
Mathematics and Statistics Faculty Publications and Presentations
We present a generalized Keller–Segel model where an arbitrary number of chemical compounds react, some of which are produced by a species, and one of which is a chemoattractant for the species. To investigate the stability of homogeneous stationary states of this generalized model, we consider the eigenvalues of a linearized system. We are able to reduce this infinite dimensional eigenproblem to a parametrized finite dimensional eigenproblem. By matrix theoretic tools, we then provide easily verifiable sufficient conditions for destabilizing the homogeneous stationary states. In particular, one of the sufficient conditions is that the chemotactic feedback is sufficiently strong. Although …
A Synthetic Document Image Dataset For Developing And Evaluating Historical Document Processing Methods, Daniel Walker, William Lund, Eric Ringger
A Synthetic Document Image Dataset For Developing And Evaluating Historical Document Processing Methods, Daniel Walker, William Lund, Eric Ringger
Faculty Publications
Document images accompanied by OCR output text and ground truth transcriptions are useful for developing and evaluating document recognition and processing methods, especially for historical document images. Additionally, research into improving the performance of such methods often requires further annotation of training and test data (e.g., topical document labels). However, transcribing and labeling historical documents is expensive. As a result, existing real-world document image datasets with such accompanying resources are rare and often relatively small. We introduce synthetic document image datasets of varying levels of noise that have been created from standard (English) text corpora using an existing document degradation …
Age Composition And Distribution Of Red Drum (Sciaenops Ocellatus) In Offshore Waters Of The North Central Gulf Of Mexico: An Evaluation Of A Stock Under A Federal Harvest Moratorium, Sean P. Powers, Crystal Hightower, J. Marcus Drymon, Matthew W. Johnson
Age Composition And Distribution Of Red Drum (Sciaenops Ocellatus) In Offshore Waters Of The North Central Gulf Of Mexico: An Evaluation Of A Stock Under A Federal Harvest Moratorium, Sean P. Powers, Crystal Hightower, J. Marcus Drymon, Matthew W. Johnson
University Faculty and Staff Publications
Because of a lack of fishery- dependent data, assessment of the recovery of fish stocks that undergo the most aggressive form of management, namely harvest moratoriums, remains a challenge. Large schools of red drum (Sclaenops ocellatus) were common along the northern Gulf of Mexico until the late 1980s when increased fishing effort quickly depleted the stock. After 24 years of harvest moratorium on red drum in federal waters, the stock is in need of reassessment; however, fishery dependent data are not available in federal waters and fishery-independent data are limited. We document the distribution, age composition, growth, and condition of …
Properties Of Weighted Generalized Beta Distribution Of The Second Kind, Yuan Ye
Properties Of Weighted Generalized Beta Distribution Of The Second Kind, Yuan Ye
Electronic Theses and Dissertations
Author's abstract: In this thesis, a new class of weighted generalized beta distribution of the second kind (WGB2) is presented. The construction makes use of the conservability approach' which includes the size or length-biased distribution as a special case. The class of WGB2 is used as descriptive models for the distribution of income. The results that are presented generalize the generalized beta distribution of second kind (GB2). The properties of these distributions including behavior of pdf, cdf, hazard functions, moments, mean, variance, coefficient of variation (CV), coefficient of skewness (CS), coefficient of kurtosis (CK) are obtained. The moments of other …
Nonlinear Dynamics And Stochasticity Of Core Genetic Regulation, Hongguang Xi
Nonlinear Dynamics And Stochasticity Of Core Genetic Regulation, Hongguang Xi
Mathematics Theses
Bacillus subtilis is one of the very well-studied organisms in biology. Recent results show that an alternative competence regulation circuit for this bacterium, differing only in the order of the composite negative feedback loop onto the master competence regulator gene comK, despite presenting equivalent functionality, exhibits physiologically important differences.It is not clear why Nature only selects a specific gene regulation circuit other than a plethora of equivalent others. Here, we hope, from the point of view of reverse engineering, to discover the fundamental reasons for natural selection of a particular circuit structure over another. Based on the wild-type Bacillus subtilis …
Optomechanics Of Cavity Driven Nanoparticles, Joel T. Rubin
Optomechanics Of Cavity Driven Nanoparticles, Joel T. Rubin
Dissertations, Theses, and Capstone Projects
The subject of this thesis is the opto-mechanical interaction of a spherical high-Q microresonator and a subwavelength particle, which, at optical wavelengths, corresponds to a size on the order of nanometers. After a review of the basic theory of spherical resonators and multi-sphere scattering, the full self-consistent electromagnetic field of the coupled resonator-particle system is derived. The particle-induced frequency shift and broadening is calculated by examining the poles of the scattering coefficients of the resonator. The force exerted on the particle by the field is determined via the Maxwell stress tensor, and is found to be in general non-conservative. From …
Ruthenium(Ii) Polypyridyl Complexes As Potential Anticancer Drugs: Synthesis, Characterization, Cell Permeability And Investigation Of Their Hypoxia-Selectivity, Yanling Chen
Chemistry & Biochemistry Theses
Research on biological activity of ruthenium polypyridyl complexes (RPCs) continues to attract interest as these complexes have shown promising anti-cancer activity both in vitro and in vivo. The mononuclear RPC, [(phen)₂Ru(tatpp)]²⁺ (MP) and the related dinuclear complex [(phen)₂Ru(tatpp)Ru(phen)₂]⁴⁺ (P) have been shown to both intercalate with DNA and show potentiated DNA cleavage under anaerobic and reducing conditions¹ ² as well as show good selectivity and cytotoxicity towards malignant cell lines in vitro and tumors in vivo. Both complexes contain the redox-active tatpp ligand which is thought to be the essential component for the observed biological activity. This thesis is focused …
Applications Of Circular Dichroism (Cd) Spectroscopy As An Educational Tool For Undergraduate Students And Monitoring Protein Conformational Changes Induced By Ligand Binding, Catherine Ann Van Der Kar
Applications Of Circular Dichroism (Cd) Spectroscopy As An Educational Tool For Undergraduate Students And Monitoring Protein Conformational Changes Induced By Ligand Binding, Catherine Ann Van Der Kar
Chemistry & Biochemistry Theses
The work reported here provides an overview on the applications of circular dichroism (CD) spectroscopy for the study of protein secondary structure. This project has two specific goals. First, to develop and validate an undergraduate experiment for CHEM 3175 (biophysical chemistry laboratory) to demonstrate the use of CD spectroscopy for the determination of protein secondary structure. In an extension of this work, the same principles of analysis were applied to the study and characterization of the protein-ligand interaction of MiaE (a non-heme iron hydroxylase) and its substrate, tRNA.
Photo-Driven One And Two-Electron Processes Of Tetraazatetrapyridopentacene And Substituted Dipyridophenazine Ligands In The Presence Or Absence Of Zinc And Ruthenium Complexation, Joseph M. Aslan
Chemistry & Biochemistry Dissertations
Herein, we report the interaction of light with Zn(II) and Ru(II) adducts of the polypyridal ligands tetraazatetrapyridopentacene (tatpp) and dipyridophenazine (dppz). For examples where Zn(II) is coordinated to tatpp and dppz, we have established a kinetic isotope effect for photo-oxidation of alcohols using both metal-free and metal-bound complexes of tatpp and dppz. The data supports H-atom transfer mechanism in the absence of Zn(II), and a formal "hydride" transfer in the presence of Zn(II).We also report herein the synthesis and characterization of various [Ru(phen)2(dppzX2)]2+ complexes using analytical techniques such as NMR, ESI-MS, CHN, and UV/Vis. We have chemically and electrochemically generated …
Integrated Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation, Krystin Chantel Robinson
Integrated Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation, Krystin Chantel Robinson
Earth & Environmental Sciences Theses
The Barnett Formation was deposited on a gently sloping marine margin that ultimately became the Fort Worth Basin (FWB), a foreland basin that evolved during the late Paleozoic Era. The FWB formed as a result of the early Ouachita Orogeny, due to the collision of Laurasia and Gondwana. The Mississippian Barnett Formation is an organic-rich lithologic unit composed primarily of laminated siliceous mudrock with some calcareous mudrock intervals. The objective of the project is to develop and interpret stratigraphic changes in the geochemistry of the Barnett Formation for the purposes of understanding the paleoceanography of the northernmost Fort Worth Basin, …
Heavy Metal Contamination Of Road Dust In Lanzhou, China, Michael Hiett
Heavy Metal Contamination Of Road Dust In Lanzhou, China, Michael Hiett
Earth & Environmental Sciences Theses
Road dusts were collected from the streets of the city of Lanzhou, the capital and largest city of Gansu Province in Northwest China. The potential health hazard posed by contaminated road dusts may be considerable for certain sensitive populations. Specifically young children who, while exploring their environment by mouthing and touching, may inadvertently ingest polluted soils and dusts through hand-to-mouth-activity, and through mouthing contaminated objects. Lanzhou, once ranked as one of the 10 most polluted cities in the world, clearly has, in all likelihood many locales with elevated levels of pollutants in various environmental media (e.g., air, water, soil and …
Bad Boundary Behavior In Star Invariant Subspaces Ii, William T. Ross, Andreas Hartmann
Bad Boundary Behavior In Star Invariant Subspaces Ii, William T. Ross, Andreas Hartmann
Department of Math & Statistics Faculty Publications
We continue our study begun in [HR11] concerning the radial growth of functions in the model spaces (IH2)⊥.
Unitary Equivalence To A Truncated Toeplitz Operator: Analytic Symbols, William T. Ross, Stephan Ramon Garcia, Daniel E. Poore
Unitary Equivalence To A Truncated Toeplitz Operator: Analytic Symbols, William T. Ross, Stephan Ramon Garcia, Daniel E. Poore
Department of Math & Statistics Faculty Publications
Unlike Toeplitz operators on H2, truncated Toeplitz operators do not have a natural matricial characterization. Consequently, these operators are difficult to study numerically. In this note we provide criteria for a matrix with distinct eigenvalues to be unitarily equivalent to a truncated Toeplitz operator having an analytic symbol. This test is constructive and we illustrate it with several examples. As a byproduct, we also prove that every complex symmetric operator on a Hilbert space of dimension < 3 is unitarily equivalent to a direct sum of truncated Toeplitz operators.