A research program to reduce the interior noise in general aviation aircraft, index and summary

This report is an index of the published works from NASA Grant NSG 1301, entitled A Research Program to Reduce the Interior Noise in General Aviation Aircraft. Included are a list of all published reports and papers, a compilation of test specimen characteristics, and summaries of each published work

Rapid toxicity detection in water quality control utilizing automated multispecies biomonitoring for permanent space stations

The objective of this study was to evaluate proposed design characteristics and applications of automated biomonitoring devices for real-time toxicity detection in water quality control on-board permanent space stations. Simulated tests in downlinking transmissions of automated biomonitoring data to Earth-receiving stations were simulated using satellite data transmissions from remote Earth-based stations

A New Approach to Measuring Moral Virtues: The Multi-Component Gratitude Measure

Empirical explorations of moral virtues have increased dramatically recently. This paper introduces a new method of assessing moral virtue using gratitude as an example; a virtue that continues to be a topic of great interest in psychology, philosophy and education. We argue, and demonstrate empirically, that to comprehensively examine a moral virtue, it is necessary to explore its cognitive, affective, attitudinal (including motivational), and behavioural aspects. We have created the 'Multi-Component Gratitude Measure' (MCGM) comprised of four components, each designed to assess a distinct dimension of the virtue of gratitude: (a) conceptions (or understandings) of gratitude; (b) grateful emotions; (c) attitudes towards gratitude; and (d) gratitude-related behaviours. In contrast to existing measures, the MCGM aims to comprehensively examine the major components that constitute this complex moral construct. In two studies we illustrate the value of assessing these four components of gratitude and how individuals can differ in the number and ‘type’ of components they exemplify. Importantly, we demonstrate how well-being increases linearly with the number of components a person possesses, as measured by three distinct measures of well-being. We discuss individual differences in gratitude experience and what this means for personal flourishing as well as future measurement of moral constructs

The Effects of Joint Training on Career and Technical Education and Special Education Professionals

Abstract Young adults with intellectual and/or developmental disabilities who leave high school have limited options in adulthood. Their rates of competitive employment in inclusive community settings is very low compared to their counterparts without disabilities. Involvement in postsecondary education and independent, community living is likewise limited. They need teams of trained professionals representing relevant disciplines who work together to support the student along college, career, and community pathways. Not only should special educators (SPED) be trained, but career technical education (CTE) professionals should be jointly trained in how to collaborate effectively and provide well-coordinated services. The purpose of this research was to explore the effects of joint training involving both CTE and SPED professionals on their knowledge and attitudes regarding collaboration in serving students with disabilities in transition from high school to adulthood. Researchers evaluated pre- and post-measures of a joint training group (CTE plus SPED participants) and a control group. Results demonstrated increased knowledge of joint training group participants and improved attitudes about collaboration in comparison to control group participants. Qualitative analysis yielded four themes: (a) barriers to collaboration, (b) the important role of CTE, (c) the need for increased collaboration, and (d) the need to involve administrators and guidance counselors in collaborative efforts alongside SPED and CTE teachers. Authors discuss implications of results to improve collaboration

Design of the low-speed NLF(1)-0414F and the high-speed HSNLF(1)-0213 airfoils with high-lift systems

The design and testing of Natural Laminar Flow (NLF) airfoils is examined. The NLF airfoil was designed for low speed, having a low profile drag at high chord Reynolds numbers. The success of the low speed NLF airfoil sparked interest in a high speed NLF airfoil applied to a single engine business jet with an unswept wing. Work was also conducted on the two dimensional flap design. The airfoil was decambered by removing the aft loading, however, high design Mach numbers are possible by increasing the aft loading and reducing the camber overall on the airfoil. This approach would also allow for flatter acceleration regions which are more stabilizing for cross flow disturbances. Sweep could then be used to increase the design Mach number to a higher value also. There would be some degradation of high lift by decambering the airfoil overall, and this aspect would have to be considered in a final design

Comparing methods of category learning: Classification versus feature inference

Categories have at least two main functions: classification of instances and feature inference. Classification involves assigning an instance to a category, and feature inference involves predicting a feature for a category instance. Correspondingly, categories can be learned in two distinct ways, by classification and feature inference. A typical difference between these in the perceptual category learning paradigm is the presence of the category label as part of the stimulus in feature inference learning and not in classification learning. So we hypothesized a label-induced rule-bias in feature inference learning compared to classification and evaluated it on an important starting point in the field for category learning – the category structures from Shepard, Hovland, and Jenkins (Psychological Monographs: General and Applied, 75(13), 1-42, 1961). They classically found that classification learning of structures consistent with more complex rules resulted in poorer learning. We compared feature inference learning of these structures with classification learning and found differences between the learning tasks supporting the label-bias hypothesis in terms of an emphasis on label-based rules in feature inference. Importantly, participants’ self-reported rules were largely consistent with their task performance and indicated the preponderance of rule representation in both tasks. So, while the results do not support a difference in the kind of representation for the two learning tasks, the presence of category labels in feature inference tended to focus rule formation. The results also highlight the specialized nature of the classic Shepard et al. (1961) stimuli in terms of being especially conducive to the formation of compact verbal rules

Containing HIV and AIDS: Creating a readers’ theatre script for professional learning in higher education

We worked together to create a readers’ theatre script as a vehicle for learning about using everyday objects to open up conversations in a workshop on HIV and AIDS curriculum integration research in higher education. Through creating the script and a series of interconnected dialogue pieces we uncovered experiences and understandings of productive containment and connections in professional learning in higher education, especially in relation to sensitive areas such as HIV and AIDS. We demonstrate how we composed the readers’ theatre script as a creative analytical practice to gain insights into our learning, while also discovering more about how this arts-based research practice can enhance individual and collaborative meaning making. Through arts-based collaborative self-study research we were able to deepen and extend our learning in a supportive and inventive manner, which fuelled hopefulness and a renewed sense of purpose

Knowledge, Food and Place: a way of producing a way of knowing

The article examines the dynamics of knowledge in the valorisation of local food, drawing on the results from the CORASON project (A cognitive approach to rural sustainable development: the dynamics of expert and lay knowledge), funded by the EU under its Framework Programme 6. It is based on the analysis of several in-depth case studies on food relocalisation carried out in 10 European countries

Applications of satellite technology to broadband ISDN networks

Two satellite architectures for delivering broadband integrated services digital network (B-ISDN) service are evaluated. The first is assumed integral to an existing terrestrial network, and provides complementary services such as interconnects to remote nodes as well as high-rate multicast and broadcast service. The interconnects are at a 155 Mbs rate and are shown as being met with a nonregenerative multibeam satellite having 10-1.5 degree spots. The second satellite architecture focuses on providing private B-ISDN networks as well as acting as a gateway to the public network. This is conceived as being provided by a regenerative multibeam satellite with on-board ATM (asynchronous transfer mode) processing payload. With up to 800 Mbs offered, higher satellite EIRP is required. This is accomplished with 12-0.4 degree hopping beams, covering a total of 110 dwell positions. It is estimated the space segment capital cost for architecture one would be about $190M whereas the second architecture would be about$250M. The net user cost is given for a variety of scenarios, but the cost for 155 Mbs services is shown to be about $15-22/minute for 25 percent system utilization

Lorentz and CPT Invariance Violation In High-Energy Neutrinos

High-energy neutrino astronomy will be capable of observing particles at both extremely high energies and over extremely long baselines. These features make such experiments highly sensitive to the effects of CPT and Lorentz violation. In this article, we review the theoretical foundation and motivation for CPT and Lorentz violating effects, and then go on to discuss the related phenomenology within the neutrino sector. We describe several signatures which might be used to identify the presence of CPT or Lorentz violation in next generation neutrino telescopes and cosmic ray experiments. In many cases, high-energy neutrino experiments can test for CPT and Lorentz violation effects with much greater precision than other techniques.Comment: 27 pages, 8 figure