The influence of conducting flaps on the reflection coefficient of a parallel-plate waveguide illuminating a conducting sheet

Conducting flap effects on reflection coefficient of parallel-plate waveguide illuminating conducting shee

Aperture reflection coefficient of a parallel- plate waveguide by wedge diffraction analysis

Aperture reflection coefficient of parallel plate waveguide by wedge diffraction analysi

Dancing Between Two Worlds: Training Experiences of Dual Credentialed Counselors

Several challenges exist in the implementation of integrated care given that SUD/Addiction treatment has historically been segregated from the broader health care system (Office of the Surgeon General, 2016). One expression of the gap that persists is that for counselors who want to administer SUD/Addiction and mental health counseling, or co-occurring services, in Washington State they are required to satisfy state requirements for two separate credentials. The purpose of this study was to conduct an in-depth exploration into the training experiences of Dual Credentialed Counselors (DCCs) in Washington State where two separate credentials are required to administer co-occurring counseling. In this Interpretive Phenomenological Analysis, six participants agreed to share their training experiences. Two semi-structured interviews were conducted with each participant. Research study findings illuminated themes that reflected how participants made sense of their training experience given the segregation, features, and conditions that were part of the ecosystem within which they trained, and elucidated how they navigated the divisions that persist between SUD/Addiction and mental health counseling. Ultimately, the study revealed that there are several opportunities to develop training resources. The dearth of supervision models which specifically address the nuances and complexity of administering co-occurring counseling is a conspicuous gap to fill. Further research studies focused on the development of resources and supervision models, which address the training needs of DCCs, could contribute to the implementation of integrated care. This dissertation is available in open access at AURA (https://aura.antioch.edu) and OhioLINK ETD Center (https://etd.ohiolink.edu)

The Te-d1 mode reflection coefficient of a ground-plane mounted parallel-plate waveguide illuminating a reflecting sheet

Symmetric parallel plate waveguide reflection coefficient analyze

Radiation pattern of a ground-plane mounted parallel-plate waveguide analyzed by a surface integration technique

Surface integration analysis of radiation pattern of parallel plate waveguid

A new approach for shaping of dual-reflector antennas

The shaping of 2-D dual-reflector antenna systems to generate a prescribed distribution with uniform phase at the aperture of the second reflector is examined. This method is based on the geometrical nature of Cassegrain and Gregorian dual-reflector antennas. The method of syntheses satisfies the principles of geometrical optics which are the foundations of dual-reflector designs. Instead of setting up differential equations or heuristically designing the subreflector, a set of algebraic equations is formulated and solved numerically to obtain the desired surfaces. The caustics of the reflected rays from the subreflector can be obtained and examined. Several examples of 2-D dual-reflector shaping are shown to validate the study. Geometrical optics and physical optics are used to calculate the scattered fields from the reflectors

Application of wedge diffraction to antenna theory

Geometrical optics techniques for diffraction available for antenna analysi

The chromatic visual evoked response as an indication of visual development

In an endeavour to provide further insight into the maturation of the cortical visual system in human infants, chromatic transient pattern reversal visual evoked potentials to red/green stimuli, were studied in a group of normal full term infants between the ages of 1 and 14 weeks post term in both cross sectional and longitudinal studies. In order to produce stimuli in which luminance cues had been eliminated with an aim to eliciting a chromatic response, preliminary studies of isoluminance determination in adults and infants were undertaken using behavioural and electrophysiological techniques. The results showed close similarity between the isoluminant ratio for adults and infants and all values were close to photometric isoluminance. Pattern reversal VEPs were recorded to stimuli of a range of red/green luminance ratios and an achromatic checkerboard. No transient VEP could be elicited with an isoluminant chromatic pattern reversal stimulus from any infant less than 7 weeks post term and similarly, all infants more than 7 weeks post term showed clear chromatic VEPs. The chromatic response first appeared at that age as a major positive component (P1) of long latency. This was delayed and reduced in comparison to the achromatic response. As the infant grew older, the latency of the P1 component decreased with the appearance of N1 and N by the 10th week post term. This finding was consistent throughout all infants assessed. In a behavioural study, no infant less than 7 weeks post term demonstrated clear discrimination of the chromatic stimulus, while those infants older than 7 weeks could do so. These findings are reviewed with respect to current neural models of visual development

Higher-order diffraction concept applied to parallel-plate waveguide patterns

Higher order diffraction concept applied to computation of parallel-plate waveguide aperture radiation pattern

Prediction of the pattern performance for the Aeroassist Flight Experiment (AFE) spacecraft

In order to provide a set of benchmark flight data for a reusable Aeroassisted Orbit Transfer Vehicle (AOTV) application, NASA undertook the development of an Aeroassisted Flight Experiment (AFE) which will be launched from the Space Shuttle. A representative aeroassist trajectory will be flown and sensor measurements of aerodynamic performance, thermal protection response, and plasma ionization reentry effects will be obtained. Discussed here is the spacecraft antenna. Estimates of signal transmissions from the AFE to the Tracking and Data Relay Satellites (TDRS) during the reentry period are given. The computer modeling of the antennas is presented with and without the reentry plasma