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Solutions of Systems of Differential Equations

Description: FOLDER is a routine whose purpose is to solve a system of linear differential equations on the IBM 650 computer which is equipped with index accumulators and floating-point hardware. A system of K n/sup th/-order differential equations which is represented by a system of K x n first-order differential equations and coded in a prescribed manner is solved numerically by the methods of Milne and/or Runge-Kutta. Flexible operating modes are made possible by the user's designtion of parameters. Outp… more
Date: June 1, 1959
Creator: Clay, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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GENERALIZED FUNCTIONS OF GREEN FOR SYSTEMS OF ORDINARY DIFFERENTIAL EQUATIONS

Description: The adjoint operator of a matrix operator and adjoint boundary conditions for adjoint matrix operators are defined. It is shown that a matrix operator can be associated in various ways with a scalar differential operator and if two adjoint matrix operators are associated with scalar differential operators then the scalar operators are adjoint. Generalized Green's functions are obtained and their use for solving boundary-value problems is discussed. Properties which characterize a generalized fu… more
Date: July 1, 1959
Creator: Wyler, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Multifractal Cloud Properties Data Assessment]

Description: Our group has been very active over the last year, analyzing a number of data sets to characterize multifractal cloud properties and assess the effects of clouds on surface radiation properties (spectral and broadband). The data sets analyzed include: AVHRR observations of clouds over the ocean, SPOT observations of clouds over the ocean, SSM/I observations of clouds over the ocean, pyranometer data with all-sky photographs, pyrgeometer data all-sky photographs, and spectral surface irradiance … more
Date: May 6, 1992
Creator: Gautier, C.; Ricchiazzi, P.; Peterson, P.; Lavallee, D.; Frouin, R.; Lubin, D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Results of PM{sub 10} and TSP monitoring at McMurdo Station, Antarctica

Description: This report presents the results of ambient air monitoring of particulate matter performed during the 1992-1993 austral summer in the vicinity of McMurdo Station, Antarctica. Thirty three 24-hour samples were collected from three locations for determination of the concentration of particulate matter less that 10 micrometers (PM{sub 10}), and seven samples collected for determination of total suspended particulate matter (TSP) concentration. Critical flow high volume air samplers with a sample f… more
Date: May 1, 1993
Creator: Lugar, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Results of monitoring for PCDDs and PCDFs in ambient air at McMurdo Station, Antarctica

Description: This report presents the results of ambient air monitoring for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) performed during the 1992-1993 austral summer in the vicinity of McMurdo Station, Antarctica. Fifteen air samples were collected from four different locations for determination of the presence and concentration of PCDD/PCDF compounds. General Metal Works Inc. PS-1 air samplers equipped with polyurethane foam (PUF) with a sample flow rate of approxima… more
Date: September 1, 1993
Creator: Lugar, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Intersections, ideals, and inversion

Description: Techniques from computational algebra provide a framework for treating large classes of inverse problems. In particular, the discretization of many types of integral equations and of partial differential equations with undetermined coefficients lead to systems of polynomial equations. The structure of the solution set of such equations may be examined using algebraic techniques.. For example, the existence and dimensionality of the solution set may be determined. Furthermore, it is possible to … more
Date: October 1, 1998
Creator: Vasco, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Beryllium-10 in the Taylor Dome ice core: Applications to Antarctic glaciology and paleoclimatology

Description: An ice core was drilled at Taylor dome, East Antarctica, reaching to bedrock at 554 meters. Oxygen-isotope measurements reveal climatic fluctuations through the last interglacial period. To facilitate comparison of the Taylor Dome paleoclimate record with geologic data and results from other deep ice cores, several glaciological issues need to be addressed. In particular, accumulation data are necessary as input for numerical ice-flow-models, for determining the flux of chemical constituents fr… more
Date: December 31, 1996
Creator: Steig, E. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comprehensive Characterization Report on Winter Quarters Bay, McMurdo Station, Antarctica

Description: Winter Quarters Bay is a small embayment located adjacent to the United States largest base in Antarctica, McMurdo Station. McMurdo Station, which is managed by the National Science Foundation`s Office of Polar Programs, was constructed in 1955, has been in constant use since that time, and has a population of about 1,000 persons during the summer and about 250 people for the winter. The bay offers shelter for ships and an ice dock is used during January and February to off load fuel and cargo.… more
Date: January 1, 1997
Creator: Crockett, A. B. & White, G. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quantitative comparison of the in situ microbial communities in different biomes

Description: A system to define microbial communities in different biomes requires the application of non-traditional methodology. Classical microbiological methods have severe limitations for the analysis of environmental samples. Pure-culture isolation, biochemical testing, and/or enumeration by direct microscopic counting are not well suited for the estimation of total biomass or the assessment of community composition within environmental samples. Such methods provide little insight into the in situ phe… more
Date: December 31, 1995
Creator: White, D.C.; Ringelberg, D.B. & Palmer, R.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Microbial ecology of terrestrial Antarctica: Are microbial systems at risk from human activities?

Description: Many of the ecological systems found in continental Antarctica are comprised entirely of microbial species. Concerns have arisen that these microbial systems might be at risk either directly through the actions of humans or indirectly through increased competition from introduced species. Although protection of native biota is covered by the Protocol on Environmental Protection to the Antarctic Treaty, strict measures for preventing the introduction on non-native species or for protecting micro… more
Date: August 1, 1996
Creator: White, G.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Update on terrestrial ages of Antarctic meteorites

Description: Terrestrial ages of Antarctic meteorites are one of the few parameters that will help us to understand the meteorite concentration mechanism on blue-ice fields. Traditionally, terrestrial ages were determined on the basis of {sup 36}Cl in the metal phase, which has an uncertainty of about 70 ky. For young meteorites (< 40 ky), the terrestrial age is usually and most accurately determined using {sup 14}C in the stone phase. In recent years two methods have been developed which are independent… more
Date: January 14, 2000
Creator: Welten, K C; Nishiizumi, K & Caffee, M W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heterogeneous processing of bromine compounds by atmospheric aerosols: Relation to the ozone budget

Description: This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The depletion of ozone, particularly above Antarctica, has been investigated extensively to formulate public policy on the use of halocarbons. While it has been shown that heterogeneous reactions of chlorine compounds on stratospheric particulates cause the ozone hole, little is known of the analogous bromine mechanisms, even though it has been recogniz… more
Date: November 1, 1998
Creator: Robinson, J. M.; Henson, B. F.; Dubey, M. K.; Casson, J. L.; Johal, M. S. & Wilson, K. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of CCM3 simulations using two climatological ozone data sets

Description: A comparison of two six year simulations with the CCM3 using different monthly mean, zonally symmetric ozone climatologies is presented. Each run was identical except for the ozone specification. The climatological SSTs supplied with CCM3 were cycled for the extent of the simulation. The ozone data sets were used were the data distributed with the CCM3 code and that compiled at SUNY Albany. The SUNYA data set reflects contemporary ozone measurements extensively using remote sensing data. The CC… more
Date: February 1, 1997
Creator: Boyle, J.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ocean current observations near McMurdo Station, Antarctica, 1993 to 1994: Relation to wastewater discharge dispersal

Description: This report presents analyses of current measurements from McMurdo Sound, Antarctica during December, 1993 to November, 1994, in relation to dispersal of the McMurdo Station wastewater plume. Data collected from 1991 to 1993 are also discussed here. Six current meters were deployed near McMurdo Station, Antarctica, from December 1993 to November 1994. Five functioned properly throughout the observation period, and one failed. Analyses of 5 data series include: (1) summaries of current speed and… more
Date: September 1, 1995
Creator: Barry, J. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental effects of the US Antarctic Program`s use of balloons in Antarctica

Description: The USAP uses balloons in Antarctica to conduct scientific research, to facilitate safe air transport, and to provide data for global weather predictions. However, there is the possibility that balloons or their payloads may adversely affect Antarctic fauna or flora. The purpose of this study is to provide background information upon which the USAP may draw when complying with its responsibilities under the National Environmental Policy Act of 1969, the Antarctic Treaty, and the Madrid Protocol. more
Date: June 1, 1995
Creator: McCold, L. N.; Eddlemon, G. K. & Blasing, T. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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