Armstrong Research, Technology, and Engineering Accomplishments 2014

No abstract availabl

Electrophysiologic assessment of (central) auditory processing disorder in children with non-syndromic cleft lip and/or palate

Session 5aPP - Psychological and Physiological Acoustics: Auditory Function, Mechanisms, and Models (Poster Session)Cleft of the lip and/or palate is a common congenital craniofacial malformation worldwide, particularly non-syndromic cleft lip and/or palate (NSCL/P). Though middle ear deficits in this population have been universally noted in numerous studies, other auditory problems including inner ear deficits or cortical dysfunction are rarely reported. A higher prevalence of educational problems has been noted in children with NSCL/P compared to craniofacially normal children. These high level cognitive difficulties cannot be entirely attributed to peripheral hearing loss. Recently it has been suggested that children with NSCLP may be more prone to abnormalities in the auditory cortex. The aim of the present study was to investigate whether school age children with (NSCL/P) have a higher prevalence of indications of (central) auditory processing disorder [(C)APD] compared to normal age matched controls when assessed using auditory event-related potential (ERP) techniques. School children (6 to 15 years) with NSCL/P and normal controls with matched age and gender were recruited. Auditory ERP recordings included auditory brainstem response and late event-related potentials, including the P1-N1-P2 complex and P300 waveforms. Initial findings from the present study are presented and their implications for further research in this area —and clinical intervention—are outlined. © 2012 Acoustical Society of Americapublished_or_final_versio

C-9 and Other Microgravity Simulations

This document represents a summary of medical and scientific evaluations conducted aboard the C-9 or other NASA-sponsored aircraft from June 30, 2006, to June 30, 2007. Included is a general overview of investigations manifested and coordinated by the Human Adaptation and Countermeasures Office. A collection of brief reports that describe tests conducted aboard the NASA-sponsored aircraft follows the overview. Principal investigators and test engineers contributed significantly to the content of the report, describing their particular experiment or hardware evaluation. Although this document follows general guidelines, each report format may vary to accommodate differences in experiment design and procedures. This document concludes with an appendix that provides background information about the Reduced Gravity Program

Applications of Drone Technology in the Management of Disaster and Risk Associated with COVID-19 Pandemic in the Built Environment: The Nigerian Experience

The world has of recent being faced by the effects and challenges of the COVID-19 pandemic and it has had major tolls on the conditions of living, the live expectancy of building occupants, and thus affecting their expected contributions to the national economy. To provide adequate services and measures to fight the pandemic, various institutional measures are evolving daily across the globe. Amidst the measures initiated by both governmental and non-governmental formations are the provisions of medical services and the decontamination of infected buildings and areas occupied by people in order to fight the pandemic amongst the populace. However, the inability to plan, remoteness, and accessibility challenges of buildings and settlements in major parts of the country has made the delivery of relief materials, fumigation of buildings, and the rendering of other services associated with the management of both disaster and risk linked to the COVID-19 difficult. This paper, therefore, focuses on the emerging intervention initiated by an Imperial Majesty in Nigeria, the Ooni of Ile-Ife, Osun State through the adoption and supply of drones to states across the country to decontaminate likely contaminated or uncontaminated buildings and settlements occupied by people. Given the enormous benefits derivable from the adoption of the use of drone technology in the management of disaster-related issues in the built environment in the country, this paper recommends that its use should be vigorously deepened, being an emerging intervention or device through appropriate institutional supports to complement efforts of stakeholders in making the country’s built environment safe and healthy for all

Applications of Drone Technology in the Management of Disaster and Risk Associated with COVID-19 Pandemic in the Built Environment: The Nigerian Experience

The world has of recent being faced by the effects and challenges of the COVID-19 pandemic and it has had major tolls on the conditions of living, the live expectancy of building occupants, and thus affecting their expected contributions to the national economy. To provide adequate services and measures to fight the pandemic, various institutional measures are evolving daily across the globe. Amidst the measures initiated by both governmental and non-governmental formations are the provisions of medical services and the decontamination of infected buildings and areas occupied by people in order to fight the pandemic amongst the populace. However, the inability to plan, remoteness, and accessibility challenges of buildings and settlements in major parts of the country has made the delivery of relief materials, fumigation of buildings, and the rendering of other services associated with the management of both disaster and risk linked to the COVID-19 difficult. This paper, therefore, focuses on the emerging intervention initiated by an Imperial Majesty in Nigeria, the Ooni of Ile-Ife, Osun State through the adoption and supply of drones to states across the country to decontaminate likely contaminated or uncontaminated buildings and settlements occupied by people. Given the enormous benefits derivable from the adoption of the use of drone technology in the management of disaster-related issues in the built environment in the country, this paper recommends that its use should be vigorously deepened, being an emerging intervention or device through appropriate institutional supports to complement efforts of stakeholders in making the country’s built environment safe and healthy for all

Augmenting low-fidelity flight simulation training devices via amplified head rotations

Due to economic and operational constraints, there is an increasing demand from aviation operators and training manufacturers to extract maximum training usage from the lower fidelity suite of flight simulators. It is possible to augment low-fidelity flight simulators to achieve equivalent performance compared to high-fidelity setups but at reduced cost and greater mobility. In particular for visual manoeuvres, the virtual reality technique of head-tracking amplification for virtual view control enables full field-of-regard access even with limited field-of-view displays. This research quantified the effects of this technique on piloting performance, workload and simulator sickness by applying it to a fixed-base, low-fidelity, low-cost flight simulator. In two separate simulator trials, participants had to land a simulated aircraft from a visual traffic circuit pattern whilst scanning for airborne traffic. Initially, a single augmented display was compared to the common triple display setup in front of the pilot. Starting from the base leg, pilots exhibited tighter turns closer to the desired ground track and were more actively conducting visual scans using the augmented display. This was followed up by a second experiment to quantify the scalability of augmentation towards larger displays and field of views. Task complexity was increased by starting the traffic pattern from the downwind leg. Triple displays in front of the pilot yielded the best compromise delivering flight performance and traffic detection scores just below the triple projectors but without an increase in track deviations and the pilots were also less prone to simulator sickness symptoms. This research demonstrated that head augmentation yields clear benefits of quick user adaptation, low-cost, ease of systems integration, together with the capability to negate the impact of display sizes yet without incurring significant penalties in workload and incurring simulator sickness. The impact of this research is that it facilitates future flight training solutions using this augmentation technique to meet budgetary and mobility requirements. This enables deployment of simulators in large numbers to deliver expanded mission rehearsal previously unattainable within this class of low-fidelity simulators, and with no restrictions for transfer to other training media

Identification and Characterization of Key Human Performance Issues and Research in the Next Generation Air Transportation System (NextGen)

This report identifies key human-performance-related issues associated with Next Generation Air Transportation System (NextGen) research in the NASA NextGen-Airspace Project. Four Research Focus Areas (RFAs) in the NextGen-Airspace Project - namely Separation Assurance (SA), Airspace Super Density Operations (ASDO), Traffic Flow Management (TFM), and Dynamic Airspace Configuration (DAC) - were examined closely. In the course of the research, it was determined that the identified human performance issues needed to be analyzed in the context of NextGen operations rather than through basic human factors research. The main gaps in human factors research in NextGen were found in the need for accurate identification of key human-systems related issues within the context of specific NextGen concepts and better design of the operational requirements for those concepts. By focusing on human-system related issues for individual concepts, key human performance issues for the four RFAs were identified and described in this report. In addition, mixed equipage airspace with components of two RFAs were characterized to illustrate potential human performance issues that arise from the integration of multiple concepts

Divergence Between the Human State Assumption and Actual Aircraft System State

Divergence is defined in this thesis as an inconsistency between the human operator’s assumption of the system state and the actual state of the system, which is substantial enough to have consequential effects on the outcome of the situation. The purpose of this thesis is to explore the concept of divergence and develop a framework that can be used to identify the consequential causes of divergence in cases involving human-system interaction. Many recent aircraft accidents involve divergence between the crew state assumption and the actual system state. As aircraft systems and automation become more complex, it’s possible that the consequential effects of divergence, illustrated by these accidents, could become more prevalent due to the correspondingly more complex understanding that may be required by the crew to effectively operate the aircraft. Divergence was explored as a concept by (1) understanding the previous literature related to divergence such as work on human error, human information processing, situation awareness, and mode awareness (2) developing a framework that can be used to understand possible causes of divergence, (3) illustrating use of the framework with accident case studies, and (4) discussing the implications of the findings of the case study analysis of divergence. Human information processing of divergence was developed using the established human information processing literature including Wickens (1992), Endsley (1995), and Reason (1990). The framework highlighted the inputs to the human and represented human processing of this information in relation to formation of a state assumption. The process model was used to identify potential causes of divergence, which were hypothesized as human information processing failures affecting the human state assumption, and to evaluate the effects of those failures on downstream processes and the human state assumption. Eleven accident case studies involving automation mode confusion were conducted to evaluate divergence using the process model of divergence. Eight of the case studies involved auto-throttle mode confusion and the three remaining cases involved divergence in other automation systems that resulted in controlled flight into terrain. The industry implications of the findings of the case studies were then discussed.U.S. Department of Transportation – Federal Aviation Administration through the Joint Universities Program (JUP) FAA 11-G-016 and NASA’s Aeronautics Fellowship Program

Aerospace Medicine and Biology: A continuing bibliography with indexes, supplement 257

This bibliography lists 331 reports, articles and other documents introduced into the NASA scientific and technical information system in March 1984