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A dynamic computer model of the growth process in university nursing programs

Description: The aim of this research is to identify the critical variables influencing the growth process in baccalaureate nursing programs, to establish the system structure of relationships between those variables, to incorporate the variables and their relationships into a dynamic decision-oriented simulation model of the growth process, and to investigate the validity and usefulness of the simulation model.
Date: August 1977
Creator: Jones, Jack William
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Evaluation of the Response of the Big Sioux Aquifer to Extreme Drought Conditions in Minnehaha County, South Dakota

Description: From purpose and approach of study: The purpose of this study was to use the digital-computer model developed from the previous study (Koch, 1982) to examine the effects on the aquifer of a pumping rate of 25 million gallons a day under the worst-drought conditions that occurred during 1974-78. A frequency rating was determined for the most severe low-flow condition in the Big Sioux River.
Date: 1983
Creator: Koch, Neil C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Sanitary Sewers on Ground-Water Levels and Streams in Nassau and Suffolk Counties, New York, Part 1: Geohydrology, Modeling Strategy, and Regional Evaluation

Description: From purpose and scope: This report is the first in a three-part series describing the U.S. Geological Survey's efforts in the detailed hydrologic investigation of southern Nassau and southwest Suffolk Counties, which includes a ground-water modeling study to predict the effects of an extensive sewer network scheduled to be completed in 1985. As the introduction to the series, this report has four objectives: (1) to present a detailed description of the hydrologic system in the area, including … more
Date: 1983
Creator: Reilly, Thomas E.; Buxton, Herbert T.; Franke, O. L. & Wait, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Machine-Readable Data Files from the Madison Limestone and Northern Great Plains Regional Aquifer System Analysis Projects, Montana, Nebraska, North Dakota, South Dakota, and Wyoming

Description: Abstract: This report lists the machine-readable data files developed for the Madison Limestone and Northern Great Plains Regional Aquifer System Analysis (RASA) projects that are stored on magnetic tape and available from the U.S. Geological Survey. Record format, file content, and size are given for: (1) Drill-stem-test data for Paleozoic and Mesozoic formations; (2) geologic data from the Madison Limestone project; (3) data sets used in the regional simulation model; (4) hydraulic-head data … more
Date: 1982
Creator: Downey, Joe S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simulations of Non-Steady Flow in a Glacial Outwash Aquifer, Southern Franklin County, Ohio

Description: From introduction: This report is part of an overall study to model the flow and to describe the water-quality characteristics of the glacial outwash aquifer in part of the Scioto River basin. The purpose of this report is to describe the development of a transient-state digital-computer model and the simulated water-level resulting from anticipated withdrawal by up to six new municipal wells.
Date: 1983
Creator: Razem, Allan C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

WATEQF: A FORTRAN IV Version of WATEQ, a Computer Program for Calculating Chemical Equilibrium of Natural Waters

Description: Abstract: WATEQF is a FORTRAN IV computer program that models the thermodynamic speciation of inorganic ions and complex species in solution for a given water analysis. The original version (WATEQ) was written in 1973 by A. H. Truesdell and B. F. Jones in Programming Language/one (PL/1). With but a few exceptions, the thermochemical data, speciation, activity coefficients, and general calculation procedure of WATEQF is identical to the PL/1 version. This report notes the differences between WAT… more
Date: September 1976
Creator: Plummer, L. Niel; Jones, Blair F. & Truesdell, Alfred H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Summary of Ground-Water Pumpage in the Central Valley, California, 1961-77

Description: From purpose and scope: The purpose of this part of the Central Valley Aquifer Project is to gather and analyze all available information on the magnitude and distribution of ground-water pumpage in the Central Valley. These data will be used as input to a digital ground-water model, one of the products of the Central Valley Aquifer Project.
Date: October 1983
Creator: Diamond, Jonathan & Williamson, Alex K.
Item Type: Refine your search to only Report
Location: None
Partner: UNT Libraries Government Documents Department
open access

Geohydrology and Digital-Simulation Model of the Farrington Aquifer in the Northern Coastal Plain of New Jersey

Description: From introduction: The purpose of this study is to simulate the hydrology of the Farrington aquifer using a computer-simulation model so that the effects of alternative withdrawal schemes can be evaluated quantitatively. The primary study area consists of the northern part of the New jersey Coastal Plain...This report discusses the geohydrology of the Farrington aquifer, the simulation model, and the effects of projected withdrawals from the Farrington aquifer.
Date: August 1979
Creator: Farlekas, George M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simulated Effects of Anticipated Coal Mining on Dissolved Solids in Selected Tributaries of the Yampa River, Northwestern Colorado

Description: From introduction: The overall objective of this report is to determine the cumulative effects of mining on dissolved solids in the Yampa River basin. more specifically the approach is (1) to develop a model of streamflow and dissolved solids focused on the Trout Creek drainage and a reach of the Yampa River main stem; (2) to calibrate this model with existing data; (3) to insert into the model future mine plans as given by the Mined Land Reclamation Division to determine cumulative effects of … more
Date: 1983
Creator: Parker, Randolph S. & Norris, J. Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Digital Model of the Floridian Aquifer, North of Tampa, Florida

Description: From purpose and scope: The purpose of this report is to describe the development and calibration of a regional digital model of the Floridian aquifer in the Tampa Bay area. This model can be used to provide regional analyses of the effects of present and proposed pumping from the Floridian aquifer.
Date: October 1977
Creator: Robertson, Alton F. & Mallory, Michael J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Digital-Simulation and Projection of Head Changes in the Potomac-Raritan-Magothy Aquifer System, Coastal Plain, New Jersey

Description: From abstract: A digital model was used to simulate the response of the Potomac-Raritan-Magothy aquifer system to pumping stresses during the 18-year period, 1956-73. The model was used to compute projected potentiometric heads and trends to the year 2000. Three sets of conditions were simulated: (1) no increase in ground-water extractions, (2) continued growth in ground-water extractions at the rate of 3 percent annually, and (3) continued growth in ground-water extractions at the rate of 3 pe… more
Date: June 1980
Creator: Luzier, James E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Deprivation of Equations Describing Solute Transport in Ground Water

Description: Abstract: A general equation describing the three-dimensional transport and dispersion of a reacting solute in flowing ground water is derived from the principle of conservation of mass. The derivation presented in this report is more detailed but less rigorous than derivations published previously. The general solute-transport equation relates concentration changes to hydrodynamic dispersion, convective transport, fluid sources and sinks, and chemical reactions. Because both dispersion and con… more
Date: April 1977
Creator: Konikow, Leonard F. & Grove, David B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Digital Model of Predevelopment Flow in the Tertiary Limestone (Floridian) Aquifer System in West-Central Florida

Description: From introduction: This study is part of a regional study of the Tertiary limestone aquifer system in the southeastern United States. The regional study encompasses all of Florida and extends into Georgia, Alabama, and South Carolina--a total area of about 82,000 square miles.
Date: June 1982
Creator: Ryder, Paul D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Acidity and Other Water-Quality Characteristics of Upper Oyster Creek, Ocean County, New Jersey

Description: Water-quality data collected in the upper Oyster Creek drainage basin indicate that the stream has excellent water quality except for a persistently low pH. The mean concentrations of the major inorganic ions were all less than 6.0 mg/L. Mean concentrations of total nitrogen and total phosphorus were 0.15 mg/L and 0.01 mg/L, respectively. Dissolved oxygen averaged 8.7 mg/L and 81 percent saturation. Low pH levels are typical of streams draining cedar swamps. In Oyster Creek, the pH tended to de… more
Date: June 1980
Creator: Fusillo, Thomas V.; Schornick, James C., Jr.; Koester, Harry E. & Harriman, Douglas A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Computation of Inflows and Outflows of Eight Regulated Lakes in the Oswego River Basin, New York, 1930-79

Description: Purpose and scope: This report describes (1) methods of computation used to obtain the daily lake inflows and outflows and river discharges; (2) sources of error and their implications for reliability of the computed values; and (3) a technique for smoothing lake-level hydrographs that minimizes the effect of random fluctuations in daily lake-levels resulting from seiche or wind action.
Date: 1983
Creator: Lumia, Richard & Moore, Richard B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reservoir Development Impacts on Surface-Water Quantity and Quality in the Yampa River Basin, Colorado and Wyoming

Description: From introduction: This report describes the results of an investigation in which three computer models were used to evaluate different levels of the proposed reservoir development. One model simulated streamflow conditions with alternative multireservoir configurations; a second model simulated the dissolved-solids concentrations at various locations in the basin; and a third model used streamflows and dissolved solids concentrations to simulate the water-quality conditions within certain prop… more
Date: 1983
Creator: Adams, D. Briane; Bauer, Daniel P.; Dale, Robert H. & Steele, Timothy Doak
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Data-Base System for Northern Midwest Regional Aquifer-System Analysis

Description: From abstract: This report presents a newly-developed "computerized data-base system . . . to facilitate collection and use of large quantities of data for a model study of the Cambrian-Ordovician aquifer system in the Northern Midwest." It includes maps and diagrams.
Date: January 1981
Creator: Kontis, A. L. & Mandle, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Water-Level Changes in the High Plains Regional Aquifer, Northwestern Oklahoma, Predevelopment to 1980

Description: From general description: During 1978, the U.S. Geological Survey began a 5-year study of the High Plains regional aquifer system to provide hydrologic information for evaluation of the effects of long-term development of the aquifer and to develop computer models for prediction of aquifer response to alternative changes in ground-water management (Weeks, 1978). This report is one of a series presenting hydrologic information on the High plains aquifer in Oklahoma.
Date: 1983
Creator: Havens, John S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modifications and Corrections to the Finite-Difference Model for Simulation of Three-Dimensional Ground-Water Flow

Description: From abstract: This report describes modifications that are incorporated into the finite-difference model for simulation of ground-water flow in three dimensions by Trescott, and Trescott and Larson. [It] also describes corrections to the model that eliminate errors in the equation formulation and in mass-balance computations for certain types of simulations.
Date: 1982
Creator: Torak, Lynn J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Rainfall-Runoff Data Network, Rockland County, New York

Description: Purpose and scope: This report evaluates the rainfall-runoff data collected at 12 sites on 10 streams in Rockland County during 1975-79 and examines the adequacy of the rainfall-runoff models developed for 10 of the sites. The predictive capability of the models will dictate their use in eventual determinations of flood-frequency relationships at each gaged site.
Date: 1982
Creator: Lumia, Richard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plan of Study for the Northern Atlantic Coastal Plain Regional Aquifer System Analysis

Description: Abstract: Sediments of Cretaceous to Holocene age compose the Northern Atlantic Coastal Plain aquifer system in an area of 50,000 square miles from North Carolina to New York. The aquifer system is the principal source of water supply for most of the area. About 1.4 billion gallons are withdrawn each day. Increasing pumpage has create~ problems such as declining water levels, saltwater intrusion, and land subsidence. The U.S. Geological Survey has begun a comprehensive study of the aquifer syst… more
Date: April 1980
Creator: Meisler, Harold
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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