Pre-emphasis determination for an S-band constant bandwidth FM/FM station

Telemetry bands are being reassigned to UHF at 1500 and 2200 MHz. Conversion primarily requires changes in equipment used in RF link, while many of same subcarrier oscillators, mixer amplifiers, and frequency discriminators can be used

Price Adjustment and Liquidity in a Residential Real Estate Market with an Accelerated Information Cascade

We examine the effect of an unannounced information event, Hurricane Katrina, on the liquidity of the residential real estate market in an area proximately located to the Mississippi Gulf Coast. Using 2SLS and Weibull techniques applied to a unique MLS data set, we test changes in liquidity in a submarkets framework. Results suggest Katrina created submarket effects with respect to the listing and sales periods of our sample and market liquidity was directly influenced by this event. We suggest that this effect was tied to information flow as owners of heavily damaged properties sought new housing in a nearby area.

Measured electron contribution to Shuttle plasma environment: Abbreviated update

The differential energy spectra of electrons between 1 and 100 eV were measured by an electron spectrometer flown on an early shuttle. This energy range was scanned in 64 incremental steps with a resolution of 7%. The most striking feature that was observed throughout these spectra was a relatively flat distribution of the higher energy electrons out to 100 eV. This is in contrast to normal ambient spectra which consistently show a rapid decline in quantitative flux beyond 50 to 55 eV. The lower energy (1 to 2 eV) end of these spectra showed steep thermal trails comparable to normal ambient spectral structure. In general, daytime fluxes were significantly higher than those obtained during nighttime measurements. Quantitative flux excursions which may possibly be associated with thruster firing were frequently observed. Spectral structure suggestive of the N2 vibrational excitation energy loss mechanism was also seen in the data from some measurement periods. Examples of these spectra are shown and possible correlations are discussed

Simulation analysis of a microcomputer-based, low-cost Omega navigation system

The current status of research on a proposed micro-computer-based, low-cost Omega Navigation System (ONS) is described. The design approach emphasizes minimum hardware, maximum software, and the use of a low-cost, commercially-available microcomputer. Currently under investigation is the implementation of a low-cost navigation processor and its interface with an omega sensor to complete the hardware-based ONS. Sensor processor functions are simulated to determine how many of the sensor processor functions can be handled by innovative software. An input data base of live Omega ground and flight test data was created. The Omega sensor and microcomputer interface modules used to collect the data are functionally described. Automatic synchronization to the Omega transmission pattern is described as an example of the algorithms developed using this data base

A microcomputer-based low-cost Omega navigation system

The application of a low cost, commercially available microcomputer as the navigation processor for a simplified OMEGA navigation system is an area of current research. The interface of a low cost front end OMEGA sensor is described and an example of the phase processing software and navigation routines is given. Emphasis is placed on the description of results obtained with the software version of the OMEGA burst filter known as the memory aided phase locked loop

2019 Walden University Research Symposium

Welcome to the 2019 Walden University Research Symposium. We are glad you can join us for our first symposium in conjunction with Winter Graduation in seven years. The Research Symposium is an annual event that showcases research projects from our academic community, especially work by our recent graduates. The poster presentations provide an opportunity for researchers to engage with all individuals attending the symposium and potentially to network with other interested researchers. If there is a theme this year, beyond the shared focus on social change, it would be research aimed at understanding how to respond to the challenges that face people in their daily lives. The “magic” of a research symposium can be found in the interactions between presenters and audience, however. So, please, don’t be shy—step up, ask questions, make comments, and enjoy the experience.https://scholarworks.waldenu.edu/symposium2019/1000/thumbnail.jp

Assessing the Developmental Instruction Model: An Exploratory Study of Classroom “Fit” Using Environmental Types

To support the instructional process, Knefelkamp advanced the developmental instruction model (DIM) to describe the aspects of academic environments that facilitate the epistemological development of college students, consistent with the Perry scheme. No related measurement tool has been developed for the DIM, which may account for the lack of research on it. Because the four DIM constructs (experiential, diversity, personalization, and structure) seemed consistent with the four dimensions found in environmental type theory (extraversion–introversion, sensing–intuition, thinking–feeling, and judging–perception), its related measure, the Salter Environmental Type Assessment, was used. The assertion that advanced learners begin to recognize these four dimensions was examined in this study of students’ (N = 200) perceptions of classroom fit” by class standing. As compared to first-year students, advanced undergraduate students in this sample indicated stronger preferences (toward environmental extraversion, intuition, and feeling) for the types of learning environments that would support epistemological development. Findings related to environmental judging–perceiving were mixed, however. The results also suggest that the Salter Environmental Type Assessment may be a workable measure of the basic constructs in the DIM. Implications to college teaching are discussed

Defining and Supporting Professional Doctorates in Higher Education

The impetus for this paper was to gain some consistency in how advanced degrees are described, developed and evaluated at the author’s institution. A particular focus was on professional doctorates, which was found to be a topic of relevance to universities in many countries. The result of that effort will be reported in this session. Specifically, after a brief history of graduate education, including the emergence of professional doctorates; the discussion will provide a synthesis of the core components of doctoral pedagogy and curriculum, with foci on the research training environment and the capstone process. The session will end with a set of recommendations for making choices about doctoral programs, especially in the increasingly distributed and online environment of global higher education

Initial Environmetric Studies of the SETA-Form C

The Salter Environmental Type Assessment (SETA) was designed to measure the “personalities” of behavioral environments and to work in conjunction with the Myers-Briggs Type Indicator®. The Form C revision of the SETA, which launched in 2012, involved increasing the number of scored items and moving the assessment to online administration. Initial results from environmetric studies of scores from Form C show that the SETA’s measurement properties remain consistent with previous versions and support its overall utility.https://scholarworks.waldenu.edu/archivedposters/1018/thumbnail.jp