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1996

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Articles 1651 - 1680 of 2437

Full-Text Articles in Physical Sciences and Mathematics

Global Telerobotics: Exploring Effective Internet Access To Robots, Simon Hartfiel, Susan Hartfiel, Leone Dunn Jan 1996

Global Telerobotics: Exploring Effective Internet Access To Robots, Simon Hartfiel, Susan Hartfiel, Leone Dunn

Faculty of Informatics - Papers (Archive)

This paper describes an Industrial Automation research project at the University of Wollongong, Australia. The project aims to develop a telerobotic planning and control architecture and human robot interface that can be used for intervention robots which require task level programming. In order to investigate global telerobotic principles, the workspace will be made accessible across the Internet via the World Wide Web. The paper describes the experimental setup and implementation of this project, focussing on a discussion of human robot interaction issues, such as interface design problems and the use of a World Wide Web browser for user interaction.

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Web Intelligent Query - Disconnected Web Browsing Using Cooperative Techniques, Ramanathan Kavasseri, Todd Keating, Michael Wittman, Anupam Joshi, Sanjiva Weerawarana Jan 1996

Web Intelligent Query - Disconnected Web Browsing Using Cooperative Techniques, Ramanathan Kavasseri, Todd Keating, Michael Wittman, Anupam Joshi, Sanjiva Weerawarana

Department of Computer Science Technical Reports

No abstract provided.

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Scalable Scientific Software Libraries And Problem Solving Environments, John R. Rice Jan 1996

Scalable Scientific Software Libraries And Problem Solving Environments, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

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A Survey Of Mobile Transaction Models, Abdelsalam Helal, Santosh Balakrishnan, Margaret Dunham, Ramez Elmasri Jan 1996

A Survey Of Mobile Transaction Models, Abdelsalam Helal, Santosh Balakrishnan, Margaret Dunham, Ramez Elmasri

Department of Computer Science Technical Reports

No abstract provided.

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On Neurobiological, Neuro-Fuzzy And Statistical Pattern Recognition Techniques, Anupam Joshi, Narendran Ramakrishnan, Elias N. Houstis, John R. Rice Jan 1996

On Neurobiological, Neuro-Fuzzy And Statistical Pattern Recognition Techniques, Anupam Joshi, Narendran Ramakrishnan, Elias N. Houstis, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

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Average Profile Of Generalized Digital Search Trees And The Generalized Lempel-Ziv Algorithm, Guy Louchard, Wojciech Szpankowski, Jing Tang Jan 1996

Average Profile Of Generalized Digital Search Trees And The Generalized Lempel-Ziv Algorithm, Guy Louchard, Wojciech Szpankowski, Jing Tang

Department of Computer Science Technical Reports

No abstract provided.

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Visualization Of Scalar Topology For Structural Enhancement, Chandrajit L. Bajaj, Daniel R. Schikore Jan 1996

Visualization Of Scalar Topology For Structural Enhancement, Chandrajit L. Bajaj, Daniel R. Schikore

Department of Computer Science Technical Reports

No abstract provided.

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A Graph-Constructive Approach To Solving Systems Of Geomeric Constraints, Ioannis Fudos, Christoph M. Hoffmann Jan 1996

A Graph-Constructive Approach To Solving Systems Of Geomeric Constraints, Ioannis Fudos, Christoph M. Hoffmann

Department of Computer Science Technical Reports

No abstract provided.

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Analysis Of A Splitting Process Arising In Probabilistic Counting And Other Related Algorithms, Peter Kirschenofer, Helmut Prodinger, Wojciech Szpankowski Jan 1996

Analysis Of A Splitting Process Arising In Probabilistic Counting And Other Related Algorithms, Peter Kirschenofer, Helmut Prodinger, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.

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Knots About Stokes' Theorem, Michael C. Sullivan Jan 1996

Knots About Stokes' Theorem, Michael C. Sullivan

Articles and Preprints

Connections between knot theory and Stokes' Theorem as presented to students in a sophomore level vector calculus class.

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Stochastic Differential Systems With Memory: Theory, Examples And Applications (Sixth Workshop On Stochastic Analysis), Salah-Eldin A. Mohammed Jan 1996

Stochastic Differential Systems With Memory: Theory, Examples And Applications (Sixth Workshop On Stochastic Analysis), Salah-Eldin A. Mohammed

Miscellaneous (presentations, translations, interviews, etc)

No abstract provided.

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Type-Ii Interface Exciton In Znse/(Zn,Mn)Se Heterostructures, V V. Rossin, Thomas Böttger, F Henneberger Jan 1996

Type-Ii Interface Exciton In Znse/(Zn,Mn)Se Heterostructures, V V. Rossin, Thomas Böttger, F Henneberger

Physics and Astronomy

Two emission bands are observed in the photoluminescence spectrum of ZnSe/~Zn,Mn!Se heterostructures. These bands emerge in a magnetic field and are associated with interface excitons formed as a result of a magnetic-field-induced type-I–type-II transition of the band alignment. Time-resolved measurements yield lifetimes in the ns range signifying a relatively large spatial separation of electrons and holes and hence low optical oscillator strength. These features are confirmed by a theoretical analysis of the interface exciton state revealing a reduced importance of the electron-hole Coulomb interaction in comparison with type-II excitons in quantum wells.

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The Planet, 1996, Winter, Deanna Woolston, Huxley College Of The Environment, Western Washington University Jan 1996

The Planet, 1996, Winter, Deanna Woolston, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

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Space, Time, And Matter, Henry G. Schwarz Jan 1996

Space, Time, And Matter, Henry G. Schwarz

History Faculty and Staff Publications

One of the principal tasks of current cosmology is to determine the amount of matter in the present universe. This task, however, is hampered by two basic errors, one the present method of measuring distances, particularly the reliance on the notion of a "standard candle," and the other the way the amount of matter is estimated, namely, by counting objects in the visi­ble universe and estimating the amount of invisible matter. Underlying these two errors is the failure to study the universe in terms of space-time.

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1996 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie Jan 1996

1996 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie

Data Sets

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1996.

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The Temperature Dependence Of Ultra Violet Sulfur Dioxide Absorption Cross Sections, Alexis Brunner Jan 1996

The Temperature Dependence Of Ultra Violet Sulfur Dioxide Absorption Cross Sections, Alexis Brunner

Honors Theses, 1963-2015

Atmospheric sulfur dioxide data became available in 1982 during and after the eruption of El Chichon, when the Total Ozone Mapping Spectrometer, TOMS, received increased absorption in the shortest wavelength channels of the instrument. TOMS was designed to map the daily global total ozone field. The increased absorption was later determined to be due to sulfur dioxide because it is a gaseous volcanic substituent that has corresponding absorption to that seen in the TOMS data. Currently there is no way to develop an algorithm that will accurately subtract the effects of sulfur dioxide from the TOMS data in order to …

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An Annotated Checklist Of The Spiders Of Northwestern Iowa And The Loess Hills Of Western Iowa, Barbara J. Abraham Jan 1996

An Annotated Checklist Of The Spiders Of Northwestern Iowa And The Loess Hills Of Western Iowa, Barbara J. Abraham

Journal of the Iowa Academy of Science: JIAS

Spiders were collected by the author from various habitats in 16 counties of northwestern Iowa and the loess hills of western Iowa during the summers of 1985 and 1990-1992. Additional donated specimens from the same region in 1981and1989 were identified by the author. Twenty-three families, 92 genera and 184 species have been identified.

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Effects Of In Profile On Material And Device Properties Of Algaas/Ingaas/Gaas High Electron Mobility Transistors, David C. Look, B. Jogai, R. Kaspi, J. L. Ebel, K. R. Evans, R. L. Jones, K. Nakano, R. E. Sherriff, C. E. Stutz, G. C. Desalvo, C. Ito Jan 1996

Effects Of In Profile On Material And Device Properties Of Algaas/Ingaas/Gaas High Electron Mobility Transistors, David C. Look, B. Jogai, R. Kaspi, J. L. Ebel, K. R. Evans, R. L. Jones, K. Nakano, R. E. Sherriff, C. E. Stutz, G. C. Desalvo, C. Ito

Physics Faculty Publications

The molecular‐beam‐epitaxial growth of InxGa1−xAs on GaAs or AlyGa1−yAs leads to a variation of In content with depth, due to In segregation. However, by predepositing In at the beginning of InxGa1−xAs growth, and also thermally removing the excess In at the end, we can produce a layer with the ideal ‘‘square’’ In profile. We find that the performance of AlyGa1−yAs/InxGa1−xAs/GaAs high electron mobility transistors is most enhanced by the predeposition step alone.

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Magnetophotoluminescence Study Of Excited States Associated With Donor Bound Excitons In High-Purity Gaas, D. C. Reynolds, David C. Look, B. Jogai, G. L. Mccoy, K. K. Bajaj Jan 1996

Magnetophotoluminescence Study Of Excited States Associated With Donor Bound Excitons In High-Purity Gaas, D. C. Reynolds, David C. Look, B. Jogai, G. L. Mccoy, K. K. Bajaj

Physics Faculty Publications

Detailed magnetic-field splitting of the two rotator states designated as (Γ6+Γ8, J=5/2) and (Γ7, J=1/2) associated with donor bound excitons in high-purity epitaxial GaAs is observed in magnetophotoluminescence spectra. These two states are associated with the light-hole mass and are split by the spin-orbit interaction. The ordering in energy of these two states agrees with that predicted by theory. Also observed are the rotator states in which, after the radiative collapse of the exciton, the donor is left in the excited states. A good agreement between the energies of the excited states of the …

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Multiport Well Design For Sampling Of Ground Water At Closely Spaced Vertical Intervals, Geoffrey N. Delin, Matthew K. Landon Jan 1996

Multiport Well Design For Sampling Of Ground Water At Closely Spaced Vertical Intervals, Geoffrey N. Delin, Matthew K. Landon

United States Geological Survey: Staff Publications

Detailed vertical sampling is useful in aquifers where vertical mixing is limited and steep vertical gradients in chemical concentrations are expected.

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Effect Of Nitrate, Organic Carbon, And Temperature On Potential Denitrification Rates In Nitrate-Rich Riverbed Sediments, K. S. Pfenning, P. B. Mcmahon Jan 1996

Effect Of Nitrate, Organic Carbon, And Temperature On Potential Denitrification Rates In Nitrate-Rich Riverbed Sediments, K. S. Pfenning, P. B. Mcmahon

United States Geological Survey: Staff Publications

A study conducted in 1994 as part of the US Geological Survey's National Water-Quality Assessment Program, South Platte River Basin investigation, examined the effect of certain environmental factors on potential denitrification rates in nitrate-rich riverbed sediments. The acetylene block technique was used to measure nitrous oxide (N2O) production rates in laboratory incubations of riverbed sediments to evaluate the effect of varying nitrate concentrations, organic carbon concentrations and type, and water temperature on potential denitrification rates. Sediment incubations amended with nitrate, at concentrations ranging from 357 to 2142 μmol 1-1 (as measured in the field), produced no significant …

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Climatic And Hydrologic Oscillations In The Owens Lake Basin And Adjacent Sierra Nevada, California, Larry Benson, James W. Burdett, Michaele Kashgarian, Steve Lund, Fred Phillips, Robert O. Rye Jan 1996

Climatic And Hydrologic Oscillations In The Owens Lake Basin And Adjacent Sierra Nevada, California, Larry Benson, James W. Burdett, Michaele Kashgarian, Steve Lund, Fred Phillips, Robert O. Rye

United States Geological Survey: Staff Publications

Oxygen isotope and total inorganic carbon values of cored sediments from the Owens Lake basin, California, indicate that Owens Lake overflowed most of the time between 52,500 and 12,500 carbon-14 (14C) years before present (B.P.). Owens Lake desicated during or after Heinrich event H1 and was hydrologically closed during Heinrich event H2. The magnetic susceptibility and organiz carbon content of cored sediments indicate that about 19 Sierra Nevada glaciations occurred between 52,500 and 23,500 14C years B.P.

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Sea-Level Records At ~80 Ka From Tectonically Stable Platforms: Florida And Bermuda, K. R. Ludwig, D. R. Muhs, K. R. Simmons, R. B. Halley, E. A. Shinn Jan 1996

Sea-Level Records At ~80 Ka From Tectonically Stable Platforms: Florida And Bermuda, K. R. Ludwig, D. R. Muhs, K. R. Simmons, R. B. Halley, E. A. Shinn

United States Geological Survey: Staff Publications

Studies from tectonically active coasts on New Guinea and Barbados have suggested that sea level at ~80 ka was significantly lower than present, whereas data from the Atlantic and Pacific coasts of North America indicate an ~80 ka sea level close to that of the present. We determined ages of corals from a shallow submerged reef off the Florida Keys and an emergent marine deposit on Bermuda. Both localities are on tectonically stable platforms distant from plate boundaries. Uranium-series ages show that corals at both localities grew during the ~80 ka sea-level highstand, and geologic data show that sea level …

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Pesticides In Streams Draining Agricultural And Urban Areas In Colorado, Robert Kimbrough, David Litke Jan 1996

Pesticides In Streams Draining Agricultural And Urban Areas In Colorado, Robert Kimbrough, David Litke

United States Geological Survey: Staff Publications

A study was conducted from April 1993 through April 1994 to describe and compare the occurrence and distribution of pesticides in streams in a small agricultural and a small urban area in Colorado. Twenty-five water samples collected at least monthly at the mouths of two tributary streams of the South Platte River were analyzed for 47 pesticides. The results indicate that both agricultural and urban areas are probable sources for pesticides in streams. In the agricultural area, 30 pesticides were detected, and in the urban area, 22 pesticides were detected in one or more samples. Most often, the more frequently …

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Acetochlor In The Hydrologic System In The Midwestern United States, 1994, Dana Kolpin, Brenda Nations, Donald Goolsby, E. Michael Thurman Jan 1996

Acetochlor In The Hydrologic System In The Midwestern United States, 1994, Dana Kolpin, Brenda Nations, Donald Goolsby, E. Michael Thurman

United States Geological Survey: Staff Publications

The herbicide acetochlor [2-chloro-N-(ethoxymethyl)- N-(2-ethyl-6-methylphenyl)acetamide] was given conditional registration in the United States by the U.S. Environmental Protection Agency in March 1994. This registration provided a rare opportunity to investigate the occurrence of a pesticide during its first season of extensive use in the midwestern United States. Water samples collected and analyzed by the U.S. Geological Survey during 1994 documented the distribution of acetochlor in the hydrologic system; it was detected in 29% of the rain samples from four sites in Iowa, 17% of the stream samples from 51 sites across nine states, and 0% of the groundwater samples from …

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Origin Of Bermuda's Clay-Rich Quaternary Paleosols And Their Paleoclimatic Significance, Stanley R. Herwitz, Daniel R. Muhs, Joseph M. Prospero, Shannon Mahan, Bruce Vaughn Jan 1996

Origin Of Bermuda's Clay-Rich Quaternary Paleosols And Their Paleoclimatic Significance, Stanley R. Herwitz, Daniel R. Muhs, Joseph M. Prospero, Shannon Mahan, Bruce Vaughn

United States Geological Survey: Staff Publications

Saharan dust deposition on Bermuda during successive Quaternary glacial periods is consistent with patterns of general circulation models, which indicate that during glacial maxima the northeast summer trade winds were stronger than at present and reached latitudes higher than 30°N despite lower-than-present sea surface temperatures in the North Atlantic.

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Organic Matter Accumulation, Sulfate Reduction, And Methanogenesis In Pliocene–Pleistocene Turbidites On The Iberia Abyssal Plain, P. A. Meyers, Timothy J. Shaw Jan 1996

Organic Matter Accumulation, Sulfate Reduction, And Methanogenesis In Pliocene–Pleistocene Turbidites On The Iberia Abyssal Plain, P. A. Meyers, Timothy J. Shaw

Faculty Publications

No abstract provided.

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The Apic Approach To High Performance Network Interface Design: Protected Dma And Other Techniques, Zubin D. Dittia, Guru M. Parulkar, Jerome R. Cox Jr. Jan 1996

The Apic Approach To High Performance Network Interface Design: Protected Dma And Other Techniques, Zubin D. Dittia, Guru M. Parulkar, Jerome R. Cox Jr.

All Computer Science and Engineering Research

We are building a very high performance 1.2 Gb/s ATM network interface chip called the APIC (ATM Port Interconnect Controller). In addition to borrowing userful ideas from a number of research and commercial prototypes, the APIC design embraces several innovative features, and integrates all of these pieces into a coherent whole. This paper describes some of the novel ideas that have been incorporated in the APIC design with a view to improving the bandwidth and latency seen by end-applications. Among the techniques described, Protected DMA and Protected I/O were designed to allow applications to queue data for transmission or reception …

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Efficient User Space Protocol Implementations With Qos Guarantees Using Real-Time Upcalls, R. Gopalakrishnan, Guru M. Parulkar Jan 1996

Efficient User Space Protocol Implementations With Qos Guarantees Using Real-Time Upcalls, R. Gopalakrishnan, Guru M. Parulkar

All Computer Science and Engineering Research

Real-time upcalls (RTUs) are an operating systems mechanism to provide quality-of-service (QoS) guarantees to network applications, and to efficiently implement protocols in user space with (QoS) guarantees. Traditionally, threads (and real-time extensions to threads) have been used to structure concurrent activities in user space protocol implementations. However, preemptive scheduling required for real-time threads leads to excessive context switching, and introduces the need for expensive concurrency control mechanisms such as locking. The RTU mechanism exploits the iterative nature of protocol processing to eliminate the need for locking, and reduce asynchronous preemption, while ensuring real-time operation. In addition to efficiency, eliminating the …

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A 240-Year Stable Oxygen And Carbon Isotopic Record In A Coral From South Florida: Implications For The Prediction Of Precipitation In Southern Florida, Peter Koenraad Swart, Richard E. Dodge, Harold J. Hudson Jan 1996

A 240-Year Stable Oxygen And Carbon Isotopic Record In A Coral From South Florida: Implications For The Prediction Of Precipitation In Southern Florida, Peter Koenraad Swart, Richard E. Dodge, Harold J. Hudson

Marine & Environmental Sciences Faculty Articles

This study reports on the δ18O and δ13C composition of the skeleton from a 240-year-old specimen of Montastraea faveolata growing in Biscayne National Park, South Florida. Annual variations in the δ18O of the skeleton deposited during the summer months show a bimodal correlation with summer rainfall. During wetter years, the δ18O of the coral skeleton and the amount of precipitation during the summer months are inversely correlated (r = -0. 7) reflecting dilution of the seawater by meteoric water lower in δ18O. During years in which summer rainfall is less …

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