Now showing items 7127-7146 of 14830

    • Identification and classification of lines in slitless spectra of lightning

      Orville, Richard Edmonds, 1936- (The University of Arizona., 1963)
    • Identification and clinical validation of defining characteristics of the nursing diagnosis alteration in tissue perfusion: Peripheral

      Van Ort, Suzanne; Oglesby, Sandra Anne/Allen, 1944- (The University of Arizona., 1993)
      This descriptive study used the Diagnostic Content Validity (DCV) and the Clinical Diagnostic Validation (CDV) models proposed by Fehring (1986) to clinically identify and validate the defining characteristics for Alteration in Tissue Perfusion: Peripheral. The Peripheral Vascular Assessment Tool (PVAT) was designed as the data collection tool; the DCV of the PVAT was 0.75. Twenty subjects, 18 years old and older, were selected from a population who were admitted as in-patients in one rural southwestern hospital. Data were collected through patient interviews, independent nurse assessment, and review of medical records. The CDV score for the validated tool was 0.62. No major defining characteristics and six minor defining characteristics were clinically validated. Differences in defining characteristics were found in the subjects with arterial occlusive disease and those with venous occlusive disease. Findings are applicable to nursing practice and research.
    • The identification and clinical validation of the defining characteristics of the nursing diagnosis Alteration in Tissue Perfusion: Cardiac

      Woodtli, Anne; Kelly, David Jonathan (The University of Arizona., 1989)
      This exploratory study used Diagnostic Content Validity (DCV) and the Clinical Diagnostic Validation (CDV) models proposed by Fehring (1986) to clinically identify and validate the defining characteristics for Alteration in Tissue Perfusion: Cardiac. The literature based Kelly Cardiac Assessment Tool (KCAT) was designed as the data collection tool. The diagnostic content validity of the KCAT was 0.70. Twenty subjects, 18 years old and older were selected from a population who were admitted as inpatients in a southwestern university affiliated hospital. Data were collected through patient interviews, independent nurse assessment, and review of laboratory data. Using the steps described in Fehring's CDV model (1986) one major defining characteristic and 13 minor defining characteristics were clinically validated. The tool CDV score was 0.62. The nursing diagnosis Alteration in Tissue Perfusion: Cardiac was clinically validated and one major and 13 minor defining characteristics were identified.
    • Identification and validation of the defining characteristics of alteration in comfort: Pain in non-communicative adults

      Woodtli, Anne; Armstrong, Deborah King, 1962- (The University of Arizona., 1992)
      The results of this study determined the defining characteristics for the diagnosis Alteration in comfort: pain in patients unable to communicate discomfort due to neurologic injury or administration of anesthesia. Sixty nurse-participants from three New England hospitals completed a written questionnaire, rating 17 literature-based items, identifying how frequently each sign occurs when pain is diagnosed, and the perceived importance of each sign. Using Fehring's (1986) Diagnostic Content Validation (DCV) model, three major defining characteristics were validated: increase in arterial blood pressure, increase in heart rate, and restlessness; and eight minor defining characteristics were validated: increase in respiratory rate, facial mask of pain, resistance to movement, moaning, rigid muscle tone, withdrawal from stimulus, tears/crying and diaphoresis. High rank order correlations in the identified defining characteristics were evident between post-anesthesia recovery and neurologically impaired patients, as well as high correlations between DCV scores and perceived importance scores.
    • IDENTIFICATION OF A BOVINE IMMUNOGLOBULIN COMPONENT UNIQUE TO MILK AND COLOSTRUM

      Davis, Elizabeth Jane, 1961- (The University of Arizona., 1986)
    • Identification of alcoholics through nursing assessment

      Walters, Jeanne Claire, 1924- (The University of Arizona., 1969)
    • Identification of an optimal ground water management strategy in a contaminated aquifer

      Colarullo, Susan J.; Maddock, Thomas (The University of Arizona., 1988)
      A ground water hydraulic management model is used to identify the optimal strategy for allocating limited fresh-water supplies while containing and recovering polluted ground water in a hypothetical, unconfined aquifer contaminated by a conservative solute. The cost of pumping from a network of potential supply and recovery wells is minimized, subject to a set of hydraulic, institutional, and legal constraints. Hydraulic constraints are formulated using linear systems theory to describe drawdown and ground water velocity variables as linear combinations of supply- and recovery-well discharge decision variables. Successful validation of the optimal management strategy indicates that the formulated model can feasibly be applied to define management options for locally-contaminated aquifer systems conjunctively used to fulfill fresh-water demands.
    • Identification of CCU patient visiting needs

      Cook, Sonja Leslie (The University of Arizona., 1979)
    • Identification of citrus varieties through observations of leaf characteristics

      Braman, Charles Durwood, 1934- (The University of Arizona., 1967)
    • Identification of cloud types with the spherical sunshine recorder

      McMahan, Oscar Harry, 1903- (The University of Arizona., 1943)
    • Identification of distinguishing characteristics around middens of Mount Graham red squirrels

      Smith, Andrew Allen, 1963- (The University of Arizona., 1992)
      I measured characteristics of vegetation around middens of the endangered Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis) in the Pinaleno Mountains of southeastern Arizona. Midden sites were compared to random sites in both the spruce/fir and transition-zone forests. Foliage volume, canopy closure over plot center, volume of downed logs ≥20 cm in diameter, and density of snags >40 cm in diameter at breast height (dbh) were greater at midden sites and best distinguished midden sites from random sites in both forest types. The mean stand age of midden sites was >230 years in the spruce/fir forest and >200 years in the transition-zone forest. As regeneration of disturbed sites will take long periods of time, management applications to protect the red squirrel must focus on preserving existing habitat by limiting activities that remove large trees, snags, or logs, open the forest canopy, create forest edge, or otherwise disrupt forest integrity.
    • Identification of Groundwater Basin Shape and Boundary Using Hydraulic Tomography

      Yeh, Tian-Chyi Jim; Daranond, Kwankwai; Ferre, Paul A.; Meixner, Thomas (The University of Arizona., 2019)
      Shapes and boundary types of a groundwater basin play important roles in the analysis of groundwater management and contaminant migration. Hydraulic tomography (HT) is a recently developed new approach for high-resolution characterization of aquifers. HT is not only an inverse methodology but also a logic data collection approach for non-redundant hydraulic information to provide high-resolution characterizations of aquifers. In this study, HT was applied to synthetic 2-D aquifers to investigate its feasibility to map the irregular shapes and types of the aquifer boundaries. We first used the forward model of VSAFT2 to simulate hydraulic responses of aquifers due to pumping tests under combinations of irregular geometries and different boundary conditions, e.g., constant head, and no-flow boundaries. Then, we used SimSLE (Simultaneous Successive Linear Estimator) inverse model in VSAFT2 to estimate the spatial distribution of hydraulic properties within rectangular-shaped domains with constant head boundaries. The simulations were conducted in both steady and transient states using a similar monitoring network to assess the ability of HT for detecting types and shapes of the boundary. Furthermore, the improvement of the estimation with prior information of transmissivity and storage coefficient was investigated. These cases were conducted using Monte Carlo simulations to ensure statistical meaningful conclusions.
    • Identification of parameters describing a conductor-backed dielectric slab

      Dudley, Donald G.; Tran, Huong Ngoc, 1966- (The University of Arizona., 1989)
      In this parametric inverse problem, we consider a lossless dielectric slab excited by a transient plane wave. The scattered electric field from the slab is presented in the ray-optic and the complex-resonance forms. Our interest is to extract the complex-resonances of the system in order to identify the parameters that describe the scatterer. We review the signal processing procedure and the identification procedure employed to identity the poles of the system. We investigate the effect of noise on identification and determine the maximum amount of noise one can impose on the system. In addition, we study the effect of data truncation on our identification procedure. We also discuss the parameters that dictate the minimum record required for successful identification. Finally, we demonstrate some similarities in effect of noise and truncation on our identification process.