Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Environmental Sciences (371)
- Earth Sciences (354)
- Life Sciences (283)
- Soil Science (191)
- Environmental Health and Protection (184)
-
- Physics (165)
- Computer Sciences (149)
- Plant Sciences (149)
- Chemistry (137)
- Oceanography and Atmospheric Sciences and Meteorology (131)
- Agronomy and Crop Sciences (130)
- Water Resource Management (105)
- Natural Resources Management and Policy (104)
- Geology (100)
- Natural Resources and Conservation (99)
- Engineering (98)
- Law (86)
- Mathematics (84)
- Social and Behavioral Sciences (78)
- Education (73)
- Environmental Law (72)
- Animal Sciences (69)
- Natural Resources Law (69)
- Weed Science (68)
- Fresh Water Studies (66)
- Administrative Law (65)
- Aquaculture and Fisheries (63)
- Water Law (63)
- Arts and Humanities (59)
- Institution
-
- University of Nebraska - Lincoln (265)
- Department of Primary Industries and Regional Development, Western Australia (152)
- University of Colorado Law School (72)
- Utah State University (69)
- Missouri University of Science and Technology (66)
-
- Purdue University (65)
- William & Mary (55)
- Old Dominion University (38)
- University of Kentucky (29)
- Western Michigan University (28)
- Selected Works (23)
- Portland State University (19)
- University of Massachusetts Amherst (18)
- Claremont Colleges (17)
- University of Rhode Island (17)
- University of South Florida (17)
- Iowa State University (15)
- Nova Southeastern University (14)
- Western Washington University (14)
- California Polytechnic State University, San Luis Obispo (13)
- University of Nevada, Las Vegas (13)
- University of Wollongong (13)
- University of South Carolina (12)
- Taylor University (11)
- University of Arkansas, Fayetteville (11)
- Union College (10)
- Wright State University (10)
- Indian Statistical Institute (9)
- South Dakota State University (9)
- Western Kentucky University (9)
- Keyword
-
- Western Australia (119)
- Grains and field crops (86)
- Biosecurity, pests, weeds and diseases (44)
- Western Australia. (19)
- United States (18)
-
- Clean Water Act (16)
- Colorado (14)
- Research and Technical Reports (13)
- Bureau of Land Management (11)
- U.S. Forest Service (11)
- VIMS Books and Book Chapters (11)
- Water pollution (11)
- Water quality (11)
- BLM (10)
- Chemistry (10)
- Ecology (10)
- Environmental policy (10)
- Lake Mead (Ariz. and Nev.) (10)
- Estuarine ecology (9)
- National Environmental Policy Act (9)
- National Forest Management Act (9)
- Utah (9)
- Wildlife (9)
- Fisheries (8)
- Idaho (8)
- NEPA (8)
- NFMA (8)
- Nebraska (8)
- Soil (8)
- Clean Air Act (7)
- Publication
-
- Experimental Summaries - Plant Research (122)
- Department of Computer Science Technical Reports (65)
- Third Eastern Wildlife Damage Control Conference (1987) (63)
- Great Plains Wildlife Damage Control Workshop Proceedings (59)
- Masters Theses (42)
-
- Nebraska Tractor Tests (31)
- Proceedings of the Sino-American Conference on Environmental Law (August 16) (23)
- Reports (23)
- Faculty Publications (22)
- The Public Lands During the Remainder of the 20th Century: Planning, Law, and Policy in the Federal Land Agencies (Summer Conference, June 8-10) (22)
- Dissertations, Theses, and Masters Projects (21)
- Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3) (21)
- Resource management technical reports (20)
- OES Theses and Dissertations (18)
- Physics Faculty Research & Creative Works (17)
- Theses and Major Papers (17)
- Physics Faculty Publications (15)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (13)
- Chemistry Faculty Research & Creative Works (13)
- Publications (WR) (13)
- All U.S. Government Documents (Utah Regional Depository) (12)
- Dissertations and Theses (12)
- Faculty of Informatics - Papers (Archive) (12)
- Honors Theses (12)
- Soil Science News and Views (12)
- ACMS Conference Proceedings 1987 (11)
- All Physics Faculty Publications (11)
- Computer Science Technical Reports (11)
- Kentucky Alfalfa and Stored Forage Conference (11)
- Sy-Hwang Liou Publications (11)
- Publication Type
- File Type
Articles 1 - 30 of 1307
Full-Text Articles in Physical Sciences and Mathematics
State-Selective Studies Of T→R, V Energy Transfer: The H+Co System, G. K. Chawla, George C. Mcbane, P. L. Houston, G. C. Schatz
State-Selective Studies Of T→R, V Energy Transfer: The H+Co System, G. K. Chawla, George C. Mcbane, P. L. Houston, G. C. Schatz
Peer Reviewed Articles
Collisional energy transfer from H atoms to CO(v=0, J≈2) has been studied at a collision energy of 1.58±0.07 eV by photolyzing H2S at 222 nm in a nozzle expansion with CO and probing the CO(v", J") levels using tunable VUV laser-induced fluorescence. The ratio CO(v"=1)/CO(v"=0) is found to be 0.1±0.008. The rotational distribution of CO(v"=0) peaks at J"gradually; population is still observed at J">45. The rotational distribution of CO(v"=1) is broad and peaks near J"=20. The experimental results are compared to …
Dual Pricing: Theory And Applications., Shikha Jha Dr.
Dual Pricing: Theory And Applications., Shikha Jha Dr.
Doctoral Theses
Even after thirty five yaara of planned economic develogment a large fraction of people in India cannot afford to have the basic necessities Like food, clothing and shelter. To quote from the Econonic Survey [1984-85), Buoyant agricultural parformance thus far has dependad mainly upon production gains in wheat and rice. Performance with raspect to other critical crops, such as pulser and oilseeds, and dryland farning generally, remains veak. The rate of growth of industry, although somewhat higher than in the ten years preceding the sixth Plan, remains low... population continues to grow at about 2 percent per year. At this …
Self-Alignments In Words And Their Applications, Alberto Apostolico, Wojciech Szpankowski
Self-Alignments In Words And Their Applications, Alberto Apostolico, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Architecture And Operation Invocation In The Clouds Kernel, Eugene H. Spafford
Architecture And Operation Invocation In The Clouds Kernel, Eugene H. Spafford
Department of Computer Science Technical Reports
No abstract provided.
Evidence For Weak Link And Anisotropy Limitations On The Transport Critical Current In Bulk Polycrystalline Y1Ba2Cu3O Χ , J.W. Ekin, A.I. Braginski, A.J. Panson, M.A. Janocko, D.W. Capone Ii, N.J. Zaluzec, B. Flandermeyer, O.F. De Lima, M. Hong, J. Kwo, Sy_Hwang Liou
Evidence For Weak Link And Anisotropy Limitations On The Transport Critical Current In Bulk Polycrystalline Y1Ba2Cu3O Χ , J.W. Ekin, A.I. Braginski, A.J. Panson, M.A. Janocko, D.W. Capone Ii, N.J. Zaluzec, B. Flandermeyer, O.F. De Lima, M. Hong, J. Kwo, Sy_Hwang Liou
Sy-Hwang Liou Publications
Measurements of the transport critical-current density (Jc), magnetization Jc, and magnetoresistance in a number of bulk sintered samples of Y1Ba2Cu3O χ from several different laboratories indicate that the transport Jc is limited by weak-link regions between high Jc regions. The weak-link Jc has a Josephson character, decreasing by two orders of magnitude as the magnetic field is increased from 0.1 to 10 mT at 77 K. An examination of the grain-boundary region in Y1Ba2Cu3O χ shows no observable impurities or …
Theory Of The Observations Made Of High-Order Rainbows From A Single Water Droplet, James A. Lock
Theory Of The Observations Made Of High-Order Rainbows From A Single Water Droplet, James A. Lock
Physics Faculty Publications
Over a dozen rainbows have been observed in a single water droplet. They appear as glare spots on the water droplet which take on coloration at the appropriate rainbow angles. The appearance of rainbows as colored glare spots in this situation is understood in terms of the caustics created in the vicinity of the droplet by the refracting light rays. The angular positions of the glare spots are understood in terms of the Fourier transform of the geometric scattering amplitude. The rainbow glare spots are also found to appear numerically in the Fourier transform of the Mie scattered fields. An …
Oyster Spatfall In Virginia Rivers: 1987 Annual Summary, James Whitcomb
Oyster Spatfall In Virginia Rivers: 1987 Annual Summary, James Whitcomb
Reports
The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.
Towards Implementing Robust Geometric Computations, Christoph M. Hoffmann, John E. Hopcroft, Michael S. Karasick
Towards Implementing Robust Geometric Computations, Christoph M. Hoffmann, John E. Hopcroft, Michael S. Karasick
Department of Computer Science Technical Reports
No abstract provided.
A Robust Distributed Termination Detection Algorithm, Niraj K. Sharma, Bharat Bhargava
A Robust Distributed Termination Detection Algorithm, Niraj K. Sharma, Bharat Bhargava
Department of Computer Science Technical Reports
No abstract provided.
Some Efficient Computational Algorithms Related To Phase Models, Vernon J. Rego
Some Efficient Computational Algorithms Related To Phase Models, Vernon J. Rego
Department of Computer Science Technical Reports
No abstract provided.
A System For Experimentation In Replicated Copy Control, Bharat Bhargava, Paul Noll, Andrew Royappa, Donna Sabo
A System For Experimentation In Replicated Copy Control, Bharat Bhargava, Paul Noll, Andrew Royappa, Donna Sabo
Department of Computer Science Technical Reports
No abstract provided.
Multilist And Inverted File System Performance Measurements, Ashok Chandramouli, George Winston Zobrist
Multilist And Inverted File System Performance Measurements, Ashok Chandramouli, George Winston Zobrist
Computer Science Technical Reports
This study evaluates the multilist and inverted file systems. It describes the structure of the two file system and then proceeds to investigate the performance. The performance is based on quantitative estimates of space requirements for file system, time to retrieve records, time to insert a record, time to delete a record, time to update a record and time to exhaustively read and reorganize the file system. The study then investigates specific situations in which one file system seems to perform better than the other.
Performance Parameter Measurements Of Generic Files, Sankarraman Subramanian, George Winston Zobrist
Performance Parameter Measurements Of Generic Files, Sankarraman Subramanian, George Winston Zobrist
Computer Science Technical Reports
This study discusses the performance parameter measurements of generic files, the pile file, the sequential file, the indexed-sequential file, the indexed file and the direct file. The file performance measurements are compiled in a software package. The study then describes the use of such software package as a simulation tool in a file design environment.
Heuristic Coloring Algorithm For The Composite Graph Coloring Problem, Johnnie C. Roberts, Billy E. Gillett
Heuristic Coloring Algorithm For The Composite Graph Coloring Problem, Johnnie C. Roberts, Billy E. Gillett
Computer Science Technical Reports
A composite graph is a finite undirected graph in which a positive integer known as a chromaticity is associated with each vertex of the graph. The composite graph coloring problem (CGCP) is the problem of finding the chromatic number of a composite graph, i.e., the minimum number of colors (positive integers) required to assign a sequence of consecutive colors to each vertex of the graph in a manner such that adjacent vertices are not assigned sequences with colors in common and the sequence assigned to a vertex has the number of colors indicated by the chromaticity of the vertex. The …
“Macromolecules 86": An International Conference On Functional Polymers And Biopolymers, Otto Vogl, Geoffrey C. Eastmond
“Macromolecules 86": An International Conference On Functional Polymers And Biopolymers, Otto Vogl, Geoffrey C. Eastmond
Emeritus Faculty Author Gallery
No abstract provided.
The Prairie Naturalist Volume 19, No. 4. December 1987
The Prairie Naturalist Volume 19, No. 4. December 1987
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
BREEDING BIRDS AND VEGETATION STRUCTURE IN WESTERN NORTH DAKOTA WOODED DRAWS ▪ C. A. Faanes
PRODUCTIVITY OF RED-WINGED BLACKBIRDS IN SOUTH DAKOTA ▪ J. F. Besser, O. E. Bray, J. W. De Grazio, J. L. Guarino, D. L. Gilbert, R. R. Martinka, and D. A. Bysart
DENSITY AND DISTRIBUTION OF THE MOUNTAIN PLOVER ON THE CHARLES M. RUSSELL NATIONAL WILDLIFE REFUGE ▪ S. L. Olson-Edge and W. D. Edge
EFFECT OF CALCULATION TECHNIQUE ON THE ESTIMATION OF LEAF AREA IN A MIXED …
Wetlands Board Bulletin Vol. Ii, No. 3, Virginia Institute Of Marine Science
Wetlands Board Bulletin Vol. Ii, No. 3, Virginia Institute Of Marine Science
Virginia Wetlands Reports
- Tidal Vegetated Wetlands and Shoreline Information by Political Subdivision.
- A Note From the Virginia Marine Resource Commission: Tracking Wetlands Permit Applications.
- Wetlands and Coastal Primary Sand Dune Violation Procedures Jurisdictional Boundaries for Shorelines Charts
Cenozoic Paleoceanography 1986: An Introduction, W. H. Berger, Larry A. Mayer
Cenozoic Paleoceanography 1986: An Introduction, W. H. Berger, Larry A. Mayer
Affiliate Scholarship
New developments in Cenozoic paleoceanography include the application of climate models and atmospheric general circulation models to questions of climate reconstruction, the refinement of conceptual models for interpretation of the carbon isotope record in terms of carbon mass balance, paleocirculation, paleoproductivity, and the regional mapping of paleoceanographic events by acoustic stratigraphy. Sea level change emerges as a master variable to which changes in the ocean environment must be traced in many cases, and tests of the onlap-offlap paradigm therefore are of crucial importance.
Influence Of Dna On The Rate Of Porphyrin Metallation, Robert F. Pasternack, E. J. Gibbs, R. Santucci, Stephanie A. Schaertel , '86, Panayiotis A. Ellinas , '87, Stanley C. Mah , '87
Influence Of Dna On The Rate Of Porphyrin Metallation, Robert F. Pasternack, E. J. Gibbs, R. Santucci, Stephanie A. Schaertel , '86, Panayiotis A. Ellinas , '87, Stanley C. Mah , '87
Chemistry & Biochemistry Faculty Works
Poly(dG–dC)₂ and poly(dA–dT)₂ have marked influences on the rate of insertion of copper(II) into cationic porphyrins reflecting the interaction mode of the porphyrin with the nucleic acid.
Boron-Bearing Kornerupine From Fiskenaesset, West Greenland: A Reexamination Of Specimens From The Type Locality, Edward S. Grew, Richard K. Herd, Nicholas Marquez
Boron-Bearing Kornerupine From Fiskenaesset, West Greenland: A Reexamination Of Specimens From The Type Locality, Edward S. Grew, Richard K. Herd, Nicholas Marquez
Earth Science Faculty Scholarship
In 1884, Lorenzen proposed the formula MgAI2SiO6 for his new mineral kornerupine from Fiskenæsset and did not suspect it to contain boron. Lacroix and de Gramont (1919) reported boron in Fiskenæsset kornerupine, while Herd (1973) found none. New analyses (ion microprobe mass analyser and spectrophotometric) of kornerupine in three specimens from the type locality, including the specimens analysed by Lorenzen and Herd, indicate the presence of boron in all three, in amounts ranging from 0.50 to 1.44 wt.% B203, e.g. (Li0.04 Na0.01 Ca0.01) (Mg3.49 Mn0.01 Fe0.17 …
Nutrient Losses From Conventional And No-Till Cornfields, Robert L. Blevins, Wilbur Frye
Nutrient Losses From Conventional And No-Till Cornfields, Robert L. Blevins, Wilbur Frye
Soil Science News and Views
Farmers must be concerned about both the monetary loss and the threat of groundwater and surface water pollution associated with the loss of plant nutrients from their fields. There is also an increasing public concern about pollution and the role of agriculture in nonpoint-source pollution. Movement of water over the surface of the soil as well as through the soil profile increases the potential for loss of water-soluble nutrients, especially nitrates.
Generalized Linear Inversion Using Tau-P Forward Modeling, Stephen Dade Walker
Generalized Linear Inversion Using Tau-P Forward Modeling, Stephen Dade Walker
Student Dissertations & Theses
The Generalized Linear Inversion (GLI) method is used in conjunction with a tau-p forward model to successfully perform inversions of test and real-data examples. All data examples used are one-dimensional velocity profiles that represent several different cases. The stability of the technique is demonstrated in all the test-data sets. The use of simple models and wel1-control 1ed test data results in a minimum of iterations of the inversion process. Different levels of perturbation of the model and test-data examples are used to reveal insight into the robust nature of the inversion.
Shape Recognition By Curvature Changing Points And Fourier Transform, Jianzhong Li
Shape Recognition By Curvature Changing Points And Fourier Transform, Jianzhong Li
Masters Theses
Computer vision is a relatively new and fast-growing field. Shape representation and recognition is a very important but difficult branch in this field.
One method of using curvature changing points and Fourier transform to recognize the shape is described in this thesis. Also an important feature in computer vision, multiscaling, is achieved by this method.
A Study Of Ion Implanted Silicon Using Rutherford Backscattering Spectroscopy With Ion Channeling, Thomas J. Pollock
A Study Of Ion Implanted Silicon Using Rutherford Backscattering Spectroscopy With Ion Channeling, Thomas J. Pollock
Masters Theses
Rutherford Backscattering Spectroscopy with channeling is the only nondestructive method for analyzing crystals which have been ion implanted. An RBS with channeling procedure has been established at the Accelerator Lab of Western Michigan University. It utilizes a tandem Van de Graaff accelerator for an incident helium beam, a goniometer for crystal alignment, and a computer for experimental control and data aquisition. State of the art measurements can be made with accuracies comparable to other labs. Specifically, ion implanted silicon was studied wherein crystal damage due to implanting was found to vary directly with implanting energy and fluence and was also …
Comment On ‘‘Relations Between Microscopic And Macroscopic Lowest-Order Optical Nonlinearities Of Molecular Crystals With One- Or Two-Dimensional Units’’, K.M. White, Craig J. Eckhardt
Comment On ‘‘Relations Between Microscopic And Macroscopic Lowest-Order Optical Nonlinearities Of Molecular Crystals With One- Or Two-Dimensional Units’’, K.M. White, Craig J. Eckhardt
Craig J. Eckhardt Publications
An algebraic error in an earlier paper [J. Zyss and J. L. Oudar, Phys. Rev. A 26, 2028 (1982)] led to an interpretation regarding the desirable polarizability characteristics of a molecule for second-harmonic generation in crystals which is opposite to that actually desired. Optimum response is obtained from crystals comprised of molecules with significant in-plane polarizabilities.
Magnetically Induced Circular Polarization, K.L. Stricklett, D.J. Burns, Paul Burrow
Magnetically Induced Circular Polarization, K.L. Stricklett, D.J. Burns, Paul Burrow
Paul Burrow Publications
Helium atoms excited to an aligned (1s3d) 3D state are produced by electron impact parallel to a magnetic field. The initial alignment of the atomic state evolves into an orientation with finite angular momentum along the magnetic field direction and thus gives rise to a circularly polarized component in the (1s3d) 3D→(1s2p) 3P radiation propagating parallel to the magnetic field. Circular-polarization fractions of a few percent are observed, in general agreement with theory. The measured polarization fraction is found to be pressure dependent, indicating that secondary excitation and cascade processes must be included for a complete description.
Electric Field And Plasmadensity Measurements In The Strongly-Driven Daytime Equatorial Electrojet: 1. The Unstablelayer And Gradient Drift Waves, R. F. Pfaff, M. C. Kelley, E. Kudeki, Bela G. Fejer, K. D. Baker
Electric Field And Plasmadensity Measurements In The Strongly-Driven Daytime Equatorial Electrojet: 1. The Unstablelayer And Gradient Drift Waves, R. F. Pfaff, M. C. Kelley, E. Kudeki, Bela G. Fejer, K. D. Baker
Bela G. Fejer
Electric field and plasma density instrumentation on board a sounding rocket launched from Punta Lobos, Peru, detected intense electrostatic waves indicative of plasma instabilities in the daytime equatorial electrojet. Simultaneous measurements taken by the Jicamarca radar showed strong 3-m type 1 electrojet echoes as well as evidence of kilometer scale horizontally propagating waves. The in situ electric field wave spectra displayed three markedly different height regions within the unstable layer: (1) a two-stream region on the topside between 103 and 111 km where the electron current was considered to be strongest, (2) a gradient drift region between 90 and 106.5 …
The Condor Equatorial Electrojetcampaign: Radar Results, E. Kudeki, Bela G. Fejer, D. T. Farley, C. Hanuise
The Condor Equatorial Electrojetcampaign: Radar Results, E. Kudeki, Bela G. Fejer, D. T. Farley, C. Hanuise
Bela G. Fejer
A review of the experimental and theoretical background to the Condor equatorial electrojet campaign is followed by the presentation and discussion of VHF radar interferometer and HF radar backscatter data taken concurrently with two rocket in situ experiments reported in companion papers (Pfaff et al., this issue (a, b). Both experiments were conducted in strongly driven periods with the on-line radar interferometer displaying signatures of what has been interpreted in earlier radar work (Kudeki et al., 1982) as kilometer scale gradient drift waves. Low-frequency density fluctuations detected by in situ rocket sensors confirm the earlier interpretation. VHF radar/rocket data comparisons …
Electric Field And Plasmadensity Measurements In The Strongly-Driven Daytime Equatorial Electrojet: 2. Two-Streamwaves, R. F. Pfaff, M. C. Kelley, E. Kudeki, Bela G. Fejer, K. D. Baker
Electric Field And Plasmadensity Measurements In The Strongly-Driven Daytime Equatorial Electrojet: 2. Two-Streamwaves, R. F. Pfaff, M. C. Kelley, E. Kudeki, Bela G. Fejer, K. D. Baker
Bela G. Fejer
Both primary and secondary two-stream (Farley-Buneman) waves have been detected by in situ electric field and plasma density probes in the strongly driven daytime equatorial electrojet over Peru. Simultaneous Jicamarca radar observations showed strong vertical and oblique 3-m type 1 echoes, also indicative of the two-stream mechanism. The rocket data show the two-stream region on the topside of the unstable layer to be situated between 103 and 111 km where the electron current was the strongest. This region was characterized by broadband plasma oscillations extending past 1 kHz in the rocket frame. Furthermore, above 106.5 km, where the electron density …
“Macromolecules 86": An International Conference On Functional Polymers And Biopolymers, Otto Vogl, Geoffrey C. Eastmond
“Macromolecules 86": An International Conference On Functional Polymers And Biopolymers, Otto Vogl, Geoffrey C. Eastmond
Otto Vogl
No abstract provided.