1,821 research outputs found

    Fish Population in Five Missouri River Ox-bow Lakes

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    Fish populations in five Missouri River ox-bow lakes were investigated during 1963 and 1964. This was a joint project of the Iowa Conservation Commission; Nebraska Game, Forestation and Parks Commission, and the United States Fish and Wildlife Service. Gizzard shad were the most abundant fish. Shad, freshwater drum, and carpsucker composed over 60% of all fish caught in four lakes. Crappie were the most numerous game fish comprising between 29% and 81% of the game fish caught in the various ox-bows. Channel catfish, White bass and bluegill were abundant in most lakes. Indigenous populations including northern pike, sauger, walleye, largemouth bass, yellow perch, flathead catfish, paddlefish, bullheads, orangespotted sunfish and green sunfish were also present

    Classical approximation for ionization by heavy particle impact

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    Classical binary approximation for ionization by proton impac

    Classical calculations of charge transfer cross sections

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    Calculations of charge transfer cross section

    User's guide: Programs for processing altimeter data over inland seas

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    The programs described were developed to process GEODYN-formatted satellite altimeter data, and to apply the processed results to predict geoid undulations and gravity anomalies of inland sea areas. These programs are written in standard FORTRAN 77 and are designed to run on the NSESCC IBM 3081(MVS) computer. Because of the experimental nature of these programs they are tailored to the geographical area analyzed. The attached program listings are customized for processing the altimeter data over the Black Sea. Users interested in the Caspian Sea data are expected to modify each program, although the required modifications are generally minor. Program control parameters are defined in the programs via PARAMETER statements and/or DATA statements. Other auxiliary parameters, such as labels, are hard-wired into the programs. Large data files are read in or written out through different input or output units. The program listings of these programs are accompanied by sample IBM job control language (JCL) images. Familiarity with IBM JCL and the TEMPLATE graphic package is assumed

    Geoid undulations and gravity anomalies over the Aral Sea, the Black Sea and the Caspian Sea from a combined GEOS-3/SEASAT/GEOSAT altimeter data set

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    Satellite-based altimetric data taken by GOES-3, SEASAT, and GEOSAT over the Aral Sea, the Black Sea, and the Caspian Sea are analyzed and a least squares collocation technique is used to predict the geoid undulations on a 0.25x0.25 deg. grid and to transform these geoid undulations to free air gravity anomalies. Rapp's 180x180 geopotential model is used as the reference surface for the collocation procedure. The result of geoid to gravity transformation is, however, sensitive to the information content of the reference geopotential model used. For example, considerable detailed surface gravity data were incorporated into the reference model over the Black Sea, resulting in a reference model with significant information content at short wavelengths. Thus, estimation of short wavelength gravity anomalies from gridded geoid heights is generally reliable over regions such as the Black Sea, using the conventional collocation technique with local empirical covariance functions. Over regions such as the Caspian Sea, where detailed surface data are generally not incorporated into the reference model, unconventional techniques are needed to obtain reliable gravity anomalies. Based on the predicted gravity anomalies over these inland seas, speculative tectonic structures are identified and geophysical processes are inferred

    Analysis of altimetry over inland seas

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    Satellite-based altimetric data taken by GEOS-3 and SEASAT over the Black Sea and Caspian Sea are analyzed and a least squares collocation technique is used to predict the geoid undulation on a .25-degree by .25-degree grid and to transform these geoid undulations to free air gravity anomalies. This project entailed processing satellite altimeter data over inland seas for recovery of area mean gravity information. Gravity information in this area of the world is not readily available, so the possibility of obtaining it from the processing of altimeter observations is attractive. The principal objective was to complete and extend analyses done in a previous study, verify those results, and document the results and techniques. A secondary objective was to improve the algorithms and results, if possible. The approach used involved editing geoid height data to remove overland data; evaluating geoid height differences at crossover points; removing orbit errors from geoid heights using crossover differences; gridding geoid height data at .25-degree by .25-degree intervals; and estimating the gravity anomalies from gridded geoid heights using the collocation technique

    Analysis of altimetry over the Aral Sea

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    Satellite based altimetric data taken by GEOS-3, SEASAT, and GEOSAT over the Aral Sea are analyzed and a least squares collocation technique is used to predict the geoid undulations on a 0.25 by 0.25 degree grid and to transform these geoid undulations to free air gravity anomalies. Rapp's 180 by 180 geopotential model is taken as the empirical model. The collocation procedure is performed with a set of local residual empirical covariance functions. For comparison, Rapp's global covariance functions and Jordan's self-consistent theoretical covariance functions based on Jordan's formulation and on locally derived parameters are also used to grid geoid undulations and to predict gravity anomalies. The sensitivity of the collocation results to the choice of covariance functions is discussed

    Comparison of Male and Female Offenders under Community Supervision

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    Correction

    Comparison of Channel Catfish Populations in Channeled and Unchanneled Sections of the Little Sioux River, Iowa

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    Comparisons are made of channel catfish in channeled and unchanneled sections of the Little Sioux River with regard to abundance, movement, and age and growth. Mean catches per unit effort of channel catfish were higher during May to October bi-weekly periods in the unchanneled section. Movement was predominantly downstream in both areas. In the unchanneled section 23.7% moved upstream, 69.6% moved downstream, and 6.7% were recaptured at their release site. In the channeled area 25.8% moved upstream, 39.8% moved downstream and 34.4% were recaptured at their release site. Due to the free exchange of catfish between both areas, growth rates were similar in both areas. The largest mean annual increment in both areas (4.42 inches) occurred in the second year

    Nothing without a Demand: Black Power and Student Activism on North Carolina College Campuses, 1967-1973

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    All of this literature engages with a number of key questions about race, activism, and higher education: How do students come together to advocate for change? Why did Black Power leaders like Stokely Carmichael and Malcolm X have such resonance with students? What tactics were most effective in catalyzing reform in the academy? What made black, African American, or ethnic studies programs so critical to student protesters? To what extent should students be able to control their educational destiny? What obligations do colleges and universities have to underrepresented students? What were administrators’ interests during the movement, and how did those interests shape institutional responses? This thesis touches on all of these questions in order to speak to a larger one: What characteristics of institutions of higher education explain the types of changes that followed the black campus movement? By synthesizing events at multiple campuses while keeping a fairly narrow focus on the state of North Carolina, this work will shed light on how students at three schools—elite, private Duke University; the state’s leading public school, the University of North Carolina at Chapel Hill; and the state’s top historically black college, North Carolina Agricultural & Technical University—organized themselves, created power, and won limited concessions that would have never seemed possible in the old dynamics of higher education.Bachelor of Art
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