scholarly journals Performance in Noise: The Relationship Between Workload And Situation Awareness in Navy Tactical Teams

2019 ◽  
Vol 63 (1) ◽  
pp. 1585-1589 ◽  
Author(s):  
Brittany E. Holthausen ◽  
Zoe M. Becerra ◽  
M. David Keller ◽  
John M. Ziriax ◽  
Bruce N. Walker
Keyword(s):  
Situation Awareness ◽  
Speech Intelligibility ◽  
Complex Relationship ◽  
Us Navy ◽  
Nasa Tlx ◽  
The Relationship ◽  
Tactical Teams

The relationship between workload and situation awareness (SA) has been researched generally; however, the relationship between measures of SA and workload, SPAM and NASA TLX respectively, has not been established. This study was completed using a tactical military scenario in which two participants acted as they would standing watch on a US Navy ship. One participant, the Tactical Action Officer (TAO) had reduced speech intelligibility in some trials. The results showed that the relationship between workload and SA differed by role (TAO or CICWO) and by the speech intelligibility level. This work shows the complex relationship between workload and SA and shows the need further investigation in this area, especially in teams.

Comparison of In-the-Ear and Over-the-Ear Hearing Aid Fittings

1986 ◽  
Vol 51 (4) ◽  
pp. 362-369 ◽  
Author(s):  
Donna M. Risberg ◽  
Robyn M. Cox
Keyword(s):  
Hearing Aids ◽  
High Frequency ◽  
Comparative Evaluation ◽  
Speech Intelligibility ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
The Difference ◽  
Functional Gain ◽  
The Relationship

A custom in-the-ear (ITE) hearing aid fitting was compared to two over-the-ear (OTE) hearing aid fittings for each of 9 subjects with mild to moderately severe hearing losses. Speech intelligibility via the three instruments was compared using the Speech Intelligibility Rating (SIR) test. The relationship between functional gain and coupler gain was compared for the ITE and the higher rated OTE instruments. The difference in input received at the microphone locations of the two types of hearing aids was measured for 10 different subjects and compared to the functional gain data. It was concluded that (a) for persons with mild to moderately severe hearing losses, appropriately adjusted custom ITE fittings typically yield speech intelligibility that is equal to the better OTE fitting identified in a comparative evaluation; and (b) gain prescriptions for ITE hearing aids should be adjusted to account for the high-frequency emphasis associated with in-the-concha microphone placement.

Assessment of Intelligibility in Children with Velopharyngeal Insufficiency: The Relationship between Intelligibility in Context Scale and Experimental Measures

2021 ◽  
pp. 1-12
Author(s):  
Hedieh Hashemi Hosseinabad ◽  
Karla N. Washington ◽  
Suzanne E. Boyce ◽  
Noah Silbert ◽  
Ann W. Kummer
Keyword(s):  
Decision Making ◽  
Clinical Application ◽  
Speech Intelligibility ◽  
Velopharyngeal Insufficiency ◽  
Point Scale ◽  
Indirect Measure ◽  
English Speaking ◽  
Parental Reports ◽  
The Relationship ◽  
Children's Speech

<b><i>Purpose:</i></b> The purpose of this study was to investigate the clinical application of the Intelligibility in Context Scale (ICS) instrument in children with velopharyngeal insufficiency (VPI). This study investigated the relationship between clinical speech outcomes and parental reports of speech intelligibility across various communicative partners. <b><i>Methods:</i></b> The ICS was completed by the parents of 20 English-speaking children aged 4–12 years diagnosed with VPI. The parents were asked to rate their children’s speech intelligibility across communication partners using a 5-point scale. Clinical metrics obtained using standard clinical transcription on the Picture-Cued SNAP-R Test were: (1) percentage of consonants correct (PCC), (2) percentage of vowels correct (PVC), and (3) percentage of phonemes correct (PPC). Nasalance from nasometer data was included as an indirect measure of nasality. Intelligibility scores obtained from naive listener’s transcriptions and speech-language pathologists’ (SLP) ratings were compared with the ICS results. <b><i>Result:</i></b> Greater PCC, PPC, PVC, and transcription-based intelligibility values were significantly associated with higher ICS values, respectively (<i>r</i>[20] = 0.84, 0.82, 0.51, and 0.70, respectively; <i>p</i> &#x3c; 0.05 in all cases). There was a negative and significant correlation between ICS mean scores and SLP ratings of intelligibility (<i>r</i> = –0.74; <i>p</i> &#x3c; 0.001). There was no significant correlation between ICS values and nasalance scores (<i>r</i>[20] = –0.28; <i>p</i> = 0.22). <b><i>Conclusion:</i></b> The high correlations obtained between the ICS with PCC and PPC measures indicate that articulation accuracy has had a great impact on parents’ decision-making regarding intelligibility in this population. Significant agreement among ICS scores with naive listener transcriptions and clinical ratings supports use of the ICS in practice.

scholarly journals Does Tenure Security Reduce Disaster Risk? A Comparative Study of the Nairobi Settlements of Kibera and Kawangware

2021 ◽  
Author(s):  
Rónán McDermott ◽  
Pat Gibbons ◽  
Dalmas Ochieng ◽  
Charles Owuor Olungah ◽  
Desire Mpanje
Keyword(s):  
Structural Integrity ◽  
Disaster Risk ◽  
Comparative Case Study ◽  
Complex Relationship ◽  
Tenure Security ◽  
Household Level ◽  
Urban Informal Settlements ◽  
The Relationship

AbstractWhile scholarship suggests that improving tenure security and housing significantly reduces disaster risk at the household level within urban settings, this assertion has not been adequately tested. Tenure security can be conceived as being composed of three interrelated and overlapping forms: tenure security as determined by legal systems; de facto tenure security; and tenure security as perceived by residents. This article traces the relationship between tenure security, the quality of housing, and disaster risk on the basis of a mixed methods comparative case study of the settlements of Kawangware and Kibera in Nairobi. Although the findings suggest that owner-occupancy is associated with the structural integrity of dwellings to a greater extent than tenantship, no association was found between the length of occupancy by households and the structural integrity of the dwelling. Moreover, tenantship is not found to be closely associated with fires and flooding affecting the dwelling as extant scholarship would suggest. Formal ownership is linked with greater investment and upgrading of property with significant implications for disaster risk. Our findings highlight the complex relationship between tenure security and disaster risk in urban informal settlements and provide impetus for further investigation.

scholarly journals What Is the Relationship between the Presence of Volatile Organic Compounds in Food and Drink Products and Multisensory Flavour Perception?

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1570
Author(s):  
Charles Spence
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mass Spectrometry Data ◽  
Complex Relationship ◽  
Chemical Profile ◽  
Volatile Organic ◽  
Flavour Perception ◽  
Food And Drink ◽  
The Relationship ◽  
Unique Chemical

This narrative review examines the complex relationship that exists between the presence of specific configurations of volatile organic compounds (VOCs) in food and drink products and multisensory flavour perception. Advances in gas chromatography technology and mass spectrometry data analysis mean that it is easier than ever before to identify the unique chemical profile of a particular food or beverage item. Importantly, however, there is simply no one-to-one mapping between the presence of specific VOCs and the flavours that are perceived by the consumer. While the profile of VOCs in a particular product undoubtedly does tightly constrain the space of possible flavour experiences that a taster is likely to have, the gustatory and trigeminal components (i.e., sapid elements) in foods and beverages can also play a significant role in determining the actual flavour experience. Genetic differences add further variation to the range of multisensory flavour experiences that may be elicited by a given configuration of VOCs, while an individual’s prior tasting history has been shown to determine congruency relations (between olfaction and gustation) that, in turn, modulate the degree of oral referral, and ultimately flavour pleasantness, in the case of familiar foods and beverages.

scholarly journals Effect of High-Altitude Environment on Driving Safety: A Study on Drivers’ Mental Workload, Situation Awareness, and Driving Behaviour

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Xinyan Wang ◽  
Wu Bo ◽  
Weihua Yang ◽  
Suping Cui ◽  
Pengzi Chu
Keyword(s):  
High Altitude ◽  
Situation Awareness ◽  
Mental Workload ◽  
Mediating Effect ◽  
Driving Safety ◽  
Risky Driving ◽  
Driving Behaviour ◽  
Driving Risk ◽  
Low Altitude ◽  
The Relationship

This study aims to analyze the effect of high-altitude environment on drivers’ mental workload (MW), situation awareness (SA), and driving behaviour (DB), and to explore the relationship among those driving performances. Based on a survey, the data of 356 lowlanders engaging in driving activities at Tibetan Plateau (high-altitude group) and 341 lowlanders engaging in driving activities at low altitudes (low-altitude group) were compared and analyzed. The results suggest that the differences between the two groups are noteworthy. Mental workload of high-altitude group is significantly higher than that of low-altitude group, and their situation awareness is lower significantly. The possibility of risky driving behaviours for high-altitude group, especially aggressive violations, is higher. For the high-altitude group, the increase of mental workload can lead to an increase on aggressive violations, and the situation understanding plays a full mediating effect between mental workload and aggressive violations. Measures aiming at the improvement of situation awareness and the reduction of mental workload can effectively reduce the driving risk from high-altitude environment for lowlanders.

Chen Duxiu and Leon Trotsky: New Light on their Relationship

1985 ◽  
Vol 102 ◽  
pp. 253-276
Author(s):  
Peter Kuhfus
Keyword(s):  
Soviet Union ◽  
Complex Relationship ◽  
The West ◽  
The Soviet Union ◽  
Communist Movement ◽  
Leon Trotsky ◽  
Far Eastern ◽  
Chen Duxiu ◽  
The Relationship

After the 1927/28 upheaval in the communist movement, a complex relationship evolved between Chen Duxiu (1879–1942) and Leon Trotsky (1879–1940). To date little has been written about this relationship in the west. The relationship between Chen and Trotsky, however, deserves treatment in its own right for various reasons. First, an elucidation of the contacts between them should close a significant gap in the respective biographies of the two Opposition leaders. The intention is not only to define Trotsky's role as seen from Chen's perspective, but also to emphasize the Far Eastern component hitherto underestimated in biographies of Trotsky. Secondly, the reconstruction of the relationship between Chen and Trotsky constitutes an important, correcting supplement to our knowledge of the developments ( = Wirkungsgeschichte) of “Trotskyism” in China, as it has been described as a concrete phenomenon as well as an ideological-political undercurrent. Thirdly, a study of the relationship between Chen and Trotsky should provide a better understanding of relations between the Communists of China and of the Soviet Union.

Analysis of Localizer Over-Bending at Coastal Airport

2014 ◽  
Vol 568-570 ◽  
pp. 1865-1868
Author(s):  
Chuan Xiao ◽  
Jun Hong Feng
Keyword(s):  
Situation Awareness ◽  
Mathematics Model ◽  
Character Analysis ◽  
Performance Specification ◽  
The Relationship

Inaccurate alignment with the runway centerline caused by localizer over-bending, will make the aircraft’s approach unstable, and hinder the timely and correct establishment of landing configuration, even threat the safety of aircraft. Targeting at the problems above, and according to the actual operational circumstance of coastal airport ,this paper, based on the performance specification of instrument landing system and character analysis of localizer over-bending at coastal airport, presents the relationship between localizer bending extent and the distance from the runway centerline to the coastline. Meanwhile, corresponding mathematics model is built and related simulations have been done, which effectively enhance the crew’s situation awareness of localizer over-bending and improve the aircraft’s landing safety at coastal airport.

Humankind and Water

2019 ◽  
pp. 36-64
Author(s):  
Edward B. Barbier
Keyword(s):  
Sustainable Development ◽  
Economic Development ◽  
Water Resources ◽  
Complex Relationship ◽  
Market Policy ◽  
Significant Difference ◽  
Water Institutions ◽  
Governance Institutions ◽  
And Control ◽  
The Relationship

This chapter examines how humankind's complex relationship with water evolved historically to create today's water paradox. There is a significant difference between how water is managed and used for economic development today compared to past eras. Starting with the Agricultural Transition around 10,000 years ago, economic development was spurred by harnessing more water resources. Rather than threatening sustainable development, exploiting and controlling water resources was the key to building successful and long-lasting economies. Although the relationship between exploiting water resources and economic development has changed, many of the water institutions and innovations have not. Water may appear to be cheap, but it is only artificially so. Instead, the current market, policy, and governance institutions underprice it, and so people continue to use water excessively as if it were not scarce. Most of the innovations are also geared toward expanding command and control of water resources, not toward reducing use as economies develop.

scholarly journals L’imaginaire d’images: une réflexion sur la photographie chez Barthes, Duras et Guibert

Çédille ◽  
2020 ◽  
pp. 565-591
Author(s):  
Antonella Lipscomb
Keyword(s):  
20Th Century ◽  
Marguerite Duras ◽  
Roland Barthes ◽  
The Self ◽  
Visual Images ◽  
Complex Relationship ◽  
Fine Line ◽  
The Relationship ◽  
Selection Of ◽  
Herve Guibert

The aim of this paper is to analyse the relationship between autobiography, pho-tography and autofiction in a selection of 20th century French autobiographies, such as Roland Barthes par Roland Barthes by Roland Barthes, L’Amant by Marguerite Duras, L´Image fantôme by Hervé Guibert. I will examine the complex relationship these auto-biographers maintain with the photographic portraits they choose to integrate or simply allude to in their autobiographies and show how the conflict between textual and visual images of the self reinforce the fine line between autobiography and autofiction.

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