Integration of Altitude and Airspeed on a Primary Flight Display

1986 ◽  
Vol 30 (7) ◽  
pp. 618-618
Author(s):  
Terence S. Abbott ◽  
Mark Nataupsky ◽  
George G. Steinmetz
Keyword(s):  
Auditory Evoked Potential ◽  
P300 Amplitude ◽  
Transport Systems ◽  
Separate Analysis ◽  
Systems Research ◽  
Amplitude Data ◽  
Significant Difference ◽  
Fixed Base ◽  
Display Configuration ◽  
Rms Error

Electronically generated primary flight displays were evaluated in a fixed-base simulator configured as the Research Flight Deck of the NASA Transport Systems Research Vehicle (TSRV). The primary flight display included vertical tapes for altitude and airspeed. Several key questions relating to the representation of information on moving-tape formats were examined during this study and are: (1) if airspeed/altitude trend vectors should be included, (2) if the actual or desired airspeed/altitude values should be centered on the tapes, and (3) if high or low numbers should be at the top of the airspeed scale. These combinations resulted in eight display configurations. Two pilots were used as subjects. They were required to fly eight unique paths which changed in altitude or airspeed every 15 seconds. Each path took approximately 3 minutes to fly. Both pilots flew all eight paths with each of the eight display configurations. They were also required to listen to high-pitched and low-pitched tones presented via a headset and count the number of low-pitched tones both as a secondary task and in order to obtain Auditory Evoked Potential (AEP) data. In addition to objective performance measures, workload was assessed with both the Subjective Workload Assessment Technique (SWAT) and the (AEP) data. An opinion questionnaire was also used. Each question was scored from 1 to 5 with higher scores representing a higher positive opinion. Preliminary data analysis was performed on the two display configurations which, prior to data collection, were anticipated to produce the greatest differences in performance and workload. Highest performance and lowest workload was expected of display configuration 1, which included airspeed/altitude trend vectors, had actual airspeed/altitude values centered on the tapes, and had the larger numbers at the top of the airspeed scale. Poorest performance and highest workload was expected from display configuration 8, which excluded all trend vectors, had desired airspeed/altitude centered on the tapes, and had the smaller numbers at the top of the airspeed scale. For this analysis, the quantitative data showed that configuration 1 had a mean altitude RMS error of 16.47 ft in contrast with an altitude RMS error of 30.29 ft with configuration 8 (p = .0005). There was also a significant difference in the means on the opinion questionnaire with configuration 1 yielding an opinion rating of 3.81 and configuration 8 a rating of 2.63 (p = .0008), indicating a preference for configuration 1. As a secondary portion of this study, the relationship between the AEP data and other workload data will be determined. Initial analysis was again performed on the two display configurations. This analysis showed that although the mean SWAT scores and the AEP P300 amplitudes for configuration 1 and configuration 8 indicated the same general trends, the differences were not statistically significant. However, it is noteworthy that a separate analysis, which included all of the display configurations, has shown a statistically significant correlation to exist between the P300 amplitude data and SWAT.

scholarly journals Evaluation of Intelligent Transport Systems Used in Urban Agglomerations and Intercity Roads by Professional Truck Drivers

2021 ◽  
Vol 13 (5) ◽  
pp. 2935
Author(s):  
Natalia Drop ◽  
Daria Garlińska
Keyword(s):  
Truck Drivers ◽  
Point Of View ◽  
Transport Systems ◽  
Emergency Vehicle ◽  
Intelligent Transport Systems ◽  
Traffic Lights ◽  
Intelligent Transport ◽  
Systems Research ◽  
Variable Content ◽  
The City

Using intelligent transport systems in cities is gaining popularity. The fundamental aim of their existence is to improve safety and traffic flow and prevent congestion in city centres. All people moving around the city, such as public transport passengers, as well as truck and emergency vehicle drivers and drivers of passenger vehicles, are users of intelligent transport systems. Research which was carried out for the article entirely concerns functioning and utility of intelligent transport systems from truck drivers’ experience. The main aim of the research was to evaluate services and tools within intelligent transport systems in European cities which are visited by Polish truck drivers. Our research indicates that most drivers (almost 98%) stated that they find intelligent transport systems useful and 92.5% of interviewed pointed that intelligent transport systems help with their everyday work duties. Of all the tools in the survey drivers agreed that variable content signs, accommodative traffic lights, and extra road illumination have most influence in road safety. Identifying the most useful and helpful tools of intelligent transport systems will allow to define their preferred development directions from truck drivers’ point of view.

scholarly journals The effect of early versus late lipid infusion in parenteral nutrition on the biochemical and cortical auditory evoked potential parameters in preterm neonates

2019 ◽  
Vol 67 (1) ◽  
Author(s):  
Rania Mohamed Abdou ◽  
Hoda Mahmoud Ibrahim Weheiba
Keyword(s):  
Weight Gain ◽  
Parenteral Nutrition ◽  
Biochemical Parameters ◽  
Evoked Potential ◽  
Demographic Data ◽  
Auditory Evoked Potential ◽  
Preterm Neonates ◽  
Lipid Infusion ◽  
Significant Difference ◽  
Cortical Auditory Evoked Potential

Abstract Background As brain activity depends greatly on the functions provided by lipid membranes, dietary fat in early life can affect the developing nervous system. Despite the adoption of an early more aggressive parenteral nutrition approach with amino acid infusions still reluctance to the early use of intravenous lipids in neonates. Aim To compare the effect of delayed versus early introduction of intravenous lipid in preterm on the biochemical parameters and on brain development by the cortical auditory evoked potential (CAEP) latency and amplitude. Methods This is a comparative study included 49 neonates admitted at the ain shams university NICUs. Participants were divided into two groups: 26 in group of early lipid infusion and 23 in late lipid infusion, Demographic data, and biochemical parameters were documented during the 1st 2 weeks of life. The CAEP was performed at age of 6 months. The latency and amplitude of P1 were recorded and compared between both groups. Results In the present work we found that group of early lipid infusion had reach their full oral intake earlier with shorter duration of parenteral nutrition and length of stay. They had better weight gain and significantly better glucose level control than group of late lipid infusion. There was no significant difference in the other chemical parameters between both groups expect for the higher incidence of cholestasis in the group of late lipid infusion. At 6 months of age, the group of early lipid infusion had significantly shorter latency and amplitude of P1 than the group of late lipid infusion. Conclusion Early effective nutrition positively affect feeding tolerance and weight gain and maturation of higher brain centers brain.

Exploration of the Development of Children's Empathy

2021 ◽  
pp. 103-112
Author(s):  
Shih-Tseng Tina Huang ◽  
Vinh-Long Tran-Chi
Keyword(s):  
Fourth Graders ◽  
Sixth Graders ◽  
Future Research ◽  
Affective Empathy ◽  
Separate Analysis ◽  
Significant Difference ◽  
Fourth Grade Students ◽  
Dependent Variables ◽  
Grade Difference ◽  
Acceptable Reliability

Empathy is an important social skill. It is believed to play an essential role in socioemotional and moral development. The current study aimed to explore empathy development during childhood especially among students in the primary and middle schools located in Southern Vietnam. Bryant's Empathy Index for children and adolescents was administrated on 403 children, including 210 boys and 193 girls. The results showed that there was no significant difference between boys and girls in affective empathy. The results further indicated that there is a significant grade difference on affective empathy with the fourth-grade students being placed higher than those of the second and the sixth grades. A separate analysis was conducted for each of the dependent variables. It was found that the fourth graders were significantly higher than the second and the sixth graders on Understanding Feelings, Feelings of Sadness and Bryant's Empathy Index respectively. The result also showed that the Vietnamese version of Bryant's Empathy Index has acceptable reliability and can be used for future research.

scholarly journals The importance of central auditory evaluation in Friedreich's ataxia

2018 ◽  
Vol 76 (3) ◽  
pp. 170-176 ◽  
Author(s):  
Bianca Simone Zeigelboim ◽  
Hélio A. G. Teive ◽  
Michèlli Rodrigues da Rosa ◽  
Jéssica Spricigo Malisky ◽  
Vinicius Ribas Fonseca ◽  
...  
Keyword(s):  
Pure Tone ◽  
Evoked Potential ◽  
Pure Tone Audiometry ◽  
Friedreich’S Ataxia ◽  
Friedreich's Ataxia ◽  
Auditory Evoked Potential ◽  
Acoustic Reflex ◽  
Cross Sectional ◽  
Significant Difference ◽  
Central Auditory Function

ABSTRACT Objective To assess central auditory function in Friedreich's ataxia. Methods A cross-sectional, retrospective study was carried out. Thirty patients underwent the anamnesis, otorhinolaryngology examination, pure tone audiometry, acoustic immittance measures and brainstem auditory evoked potential (BAEP) assessments. Results The observed alterations were: 43.3% in the pure tone audiometry, bilateral in 36.7%; 56.6% in the BAEP test, bilateral in 50%; and 46.6% in the acoustic immittance test. There was a significant difference (p < 0.05) in the comparison between the tests performed. Conclusion In the audiological screening, there was a prevalence of the descending audiometric configuration at the frequency of 4kHz, and absence of the acoustic reflex at the same frequency. In the BAEP test, there was a prevalence of an increase of the latencies in waves I, III and V, and in the intervals of interpeaks I-III, I-V and III-V. In 13.3% of the patients, wave V was absent, and all waves were absent in 3.3% of patients.

scholarly journals Routine Clinical Practice Treatment Outcomes of Eplerenone in Acute and Chronic Central Serous Chorioretinopathy

2021 ◽  
Vol 12 ◽  
Author(s):  
Katrin Fasler ◽  
Jeanne M. Gunzinger ◽  
Daniel Barthelmes ◽  
Sandrine A. Zweifel
Keyword(s):  
Clinical Practice ◽  
Central Serous Chorioretinopathy ◽  
Subretinal Fluid ◽  
Routine Clinical Practice ◽  
Secondary Outcome ◽  
Maximum Height ◽  
Separate Analysis ◽  
Chronic Central Serous Chorioretinopathy ◽  
Cox Regression Analysis ◽  
Significant Difference

Purpose: To evaluate efficacy of eplerenone therapy vs. observation on resolution of subretinal fluid (SRF) in patients with acute and chronic central serous chorioretinopathy (CSCR) in routine clinical practice.Methods: Retrospective comparative case series of eyes diagnosed with CSCR treated with eplerenone or observation. Primary outcome measure was maximum height of SRF at 12 months. Secondary outcome was percentage of eyes with complete resolution of SRF, percentage of eyes with reduction of SRF ≥50%, and best corrected visual acuity (VA) at 12 months. Separate analysis was conducted for eyes with acute and chronic CSCR.Results: Sixty-eight eyes of 60 patients (82% male) were included. Eleven of the 38 eyes with acute CSCR, and seven of the 30 eyes with chronic CSCR, received eplerenone. Subretinal fluid decreased from baseline to 12 months in acute (287 ± 221 to 31 ± 63 µm) and chronic (148 ± 134 to 40 ± 42 µm) CSCR. Kaplan-Meier curves were similar for treated and observed eyes and COX regression analysis did not show a significant difference in SRF resolution in treated vs. observed eyes (p = 0.6 for acute, p = 0.2 for chronic CSCR).Conclusion: This routine clinical practice outcome study did not show evidence of efficacy of eplerenone on resolution of SRF in acute nor chronic CSCR.

Productivity Comparison of Wafer Transport Architectures in PVD Tools Used for Fan-Out Packaging RDL Barrier/Seed Formation

2018 ◽  
Vol 2018 (1) ◽  
pp. 000748-000753
Author(s):  
Terry Bluck ◽  
Chris Smith ◽  
Paul Werbaneth
Keyword(s):  
Transport System ◽  
Physical Vapor Deposition ◽  
Sputter Deposition ◽  
Transport Systems ◽  
Seed Formation ◽  
System Productivity ◽  
Linear Transport ◽  
Cost Of Ownership ◽  
Significant Difference ◽  
Cluster Tool

Abstract Physical Vapor Deposition (PVD) systems are widely used in the semiconductor fabrication industry, both for front-end applications in the wafer fab and for back-end applications at device packaging houses. In fan-out wafer level packaging (FOWLP), and in fan-out panel level packaging (FOPLP), sputter deposited Ti and Cu are the base on which electroplated copper Redistribution Layers (RDLs) are built. For these RDL barrier/seed layers, PVD cluster tools, wafer transport architectures that have been widely used since the mid-1980s, are the current Process of Record (POR) in advanced packaging; however, these tools typically operate in a regime where wafer transport is robot-limited to approximately 50 wafers per hour, which limits overall throughput and greatly influences Cost of Ownership (COO) for the sputter deposition step(s), because the central handling robot occupied with a transfer from the Ti PVD module to the Cu PVD module, for example, has no opportunity to be doing anything other than that specific transfer. Other wafer transport architectures are more efficient from a wafer handling perspective. In linear transport carrier-based PVD tools, wafers or panels passing through the system benefit from a mechanical transfer time budget that is considerably less than for a cluster tool. Transport time overhead per wafer on linear transport systems is quite low, and scheduler software optimization becomes less onerous too, as a result of the simpler wafer transport architecture. We analyzed the relative throughput of cluster and linear transport PVD tools for a typical FOWLP barrier/seed layer (1000Å Ti / 2000Å Cu) sputter deposition process, and present details here of how the time spent moving wafers to various processing chambers affects overall system productivity. In the case of the cluster tool architecture, with its central wafer handling robot, wafer throughputs are approximately 50 wafers per hour, while on the linear transport system wafer throughputs as high as 240 wafers per hour are possible. The significant difference in system throughputs greatly affects the relative Cost of Ownership (COO) per wafer processed, with the linear transport system returning COO results that are less than half those of the typical cluster PVD tool.

scholarly journals Acoustic Change Complex (ACC) using Speech and Non-Speech Stimuli in Normal Hearing Children

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
W A Elkholy ◽  
D M Hassan ◽  
N A Shafik ◽  
Y E K Eltoukhy
Keyword(s):  
Auditory Evoked Potentials ◽  
Temporal Frequency ◽  
Normal Hearing ◽  
Auditory Discrimination ◽  
Auditory Evoked Potential ◽  
Frequency Change ◽  
Spectral Change ◽  
Speech Stimuli ◽  
Significant Difference ◽  
Hearing Children

Abstract Background Cortical auditory evoked potentials (CAEPs) are brain responses evoked by sound and are processed in or near the auditory cortex. ACC is a cortical auditory evoked potential (P1-N1-P2) elicited by a change within an ongoing sound stimulus. Objective To reach the best stimuli that can elicit ACC and act as an objective tool for assessment of cortical auditory discrimination in normal hearing children. Patients and Methods The present study was originally designed to standardize ACC evoked response in 41 children aged from 2 to 10 years. The mean age in our study group was 6.2 years with no significant difference between males and females. Stimuli used in this study were specifically designed to be used by AEP equipment that is capable of uploading short duration stimuli (500 msec.), thus can be used in a regular AEP lab. ACC was elicited by three groups of stimuli. Gap-in-tones stimuli represent temporal change (6, 10, 30 and 50 msec. gap introduced to 1000 Hz tone separately), frequency pairs stimuli represent frequency change (2%, 4%, 10% and 25% change from base freq. 1000 Hz) and vowel pairs stimuli represent spectral change (/i-u/, /u-i/, /i-a/. /a-i/, /u-a/, /a-u/). ACC response parameters were compared when using the different stimuli as regards percent detectability, morphology, latency and amplitude. Results Gap-in-tones at 6 msec. and 4% frequency change could elicit ACC response in 100% of subjects. For spectral change, /u-i/ was the highest in eliciting ACC (78%) followed by /i-u/ (68.2%) then /a-i/ (58.5%). ACC had the same morphology of the onset response in the majority of subjects, with longer latency and smaller amplitude. ACC amplitude is a better indicator of cortical discrimination compared to latency because it is consistently affected by magnitude of change. Conclusion ACC is a good electrophysiological tool for cortical auditory discrimination for temporal, frequency and spectral change.

scholarly journals The Effect of Learning English on P300 in Children

2020 ◽  
Author(s):  
Pâmela Mariel Marques ◽  
Ângela Leusin Mattiazzi ◽  
Laís Ferreira ◽  
Sheila Jacques Oppitz ◽  
Eliara Pinto Vieira Biaggio
Keyword(s):  
Second Language ◽  
Cognitive Activity ◽  
Auditory Pathway ◽  
Auditory Evoked Potential ◽  
Control Group ◽  
P300 Latency ◽  
Cross Sectional ◽  
English Classes ◽  
Significant Difference ◽  
Learning English

Abstract Introduction Learning a second language is an essential task in today's world, and is experienced by many children. The cognitive auditory-evoked potential (P300) is related to cognitive activity, attention and concentration, enabling the investigation of the effect of a second language on the central auditory pathway. Objective To analyze the effects of learning English on P300 latency and amplitude in children and to correlate them with age, time of exposure to English, and time in class. Method An observational, descriptive, cross-sectional and quantitative study, in which 33 children, aged between 5 and 9 years and 11 months, of both genders participated, 14 of them in the process of learning English (study group) and 19 without this experience (control group). All subjects had their P300 evaluated using the Intelligent Hearing Systems (IHS, Miami, FL, US) Smart EP equipment. A total of 300 binaural stimuli were used in 75 dBnHL, as well as 240 frequent and 60 rare stimuli, using the pairs /ba/ and /di/ respectively. Results There was a statistically significant difference regarding P300 latency between the groups, and children exposed to English classes had lower latency in this component. No statistical difference was found between P300 amplitudes. No correlation was observed regarding age, time of exposure to English, time in class, and electrophysiological responses. Conclusion The Children exposed to English classes had the most stimulating auditory pathway, because their P300 had lower latency, being a resource for the speech therapy clinic.

Plication versus Resection in Horizontal Strabismus Surgery

2019 ◽  
Vol 236 (04) ◽  
pp. 442-445 ◽  
Author(s):  
Jill Kühne ◽  
Anja Palmowski-Wolfe
Keyword(s):  
Strabismus Surgery ◽  
Dose Effect ◽  
P Value ◽  
Separate Analysis ◽  
Resection Group ◽  
Simultaneous Surgery ◽  
Age At Surgery ◽  
Significant Difference ◽  
The University

Abstract Background To compare two commonly used strengthening procedures in strabismus surgery: plication and resection of the extraocular muscle (EOM). Patients and Methods From an anonymous databank of strabismus surgeries, performed at the University Eye Hospital Basel, patients with a horizontal strabismus surgery, consisting of a recession combined with either plication or resection of the antagonist and a follow-up of at least 3 months, were included. Exclusion criteria were previous eye surgeries, binocular surgeries, and simultaneous surgery of oblique or vertical EOM. Pre- and postoperative angles were measured using the alternating prism cover test during fixation at distance. Results Fifty-nine patients met the criteria and were matched according to the angle at baseline in the recession/plication group, resulting in 12 resection/recession and 12 plication/recession patients. There was no significant difference in the number of eso- and exodeviations, age at surgery, or gender between the groups. Mean difference between plication and resection was 1.2 PD at 1 week (p = 0.72) and 1.7 PD at 3 months (p = 0.61). A separate analysis for eso- and exodeviations showed no significant difference between recession/plication and recession/resection at 1 week or 3 months (p value side effect = 0.59; resection vs. plication at 1 week p = 0.68; resection vs. plication at 3 months: p = 0.57). The overall dose effect (SD) was 2.13 PD (0.88)/mm in the recession/plication group and 2.51 PD (0.81)/mm in the recession/resection group after 1 week (p = 0.331). After 3 months, the mean dose effect was 1.85 PD (1.06)/mm in the recession/plication group and 2.09 PD (1.12)/mm in the recession/resection group (p = 0.611). Discussion Our findings show that recession/plication is a valid alternative to recession/resection in horizontal strabismus without the need to cut the muscle, as we saw no difference in surgical effectiveness in either eso- or exodeviations at 1 week or at 3 months.

scholarly journals Computerized Auditory Training in Students: Electrophysiological and Subjective Analysis of Therapeutic Effectiveness

2017 ◽  
Vol 22 (01) ◽  
pp. 023-032 ◽  
Author(s):  
Ândrea Melo ◽  
Carolina Mezzomo ◽  
Michele Garcia ◽  
Eliara Pinto Biaggio
Keyword(s):  
Neural Plasticity ◽  
Therapeutic Intervention ◽  
Statistical Tests ◽  
Auditory Evoked Potential ◽  
Auditory Training ◽  
Therapeutic Effects ◽  
Phonological Acquisition ◽  
Subjective Analysis ◽  
Significant Difference ◽  
The Right

Introduction Computerized auditory training (CAT) has been building a good reputation in the stimulation of auditory abilities in cases of auditory processing disorder (APD). Objective To measure the effects of CAT in students with APD, with typical or atypical phonological acquisition, through electrophysiological and subjective measures, correlating them pre- and post-therapy. Methods The sample for this study includes14 children with APD, subdivided into children with APD and typical phonological acquisition (G1), and children with APD and atypical phonological acquisition (G2). Phonological evaluation of children (PEC), long latency auditory evoked potential (LLAEP) and scale of auditory behaviors (SAB) were conducted to help with the composition of the groups and with the therapeutic intervention. The therapeutic intervention was performed using the software Escuta Ativa (CTS Informática, Pato Branco, Brazil) in 12 sessions of 30 minutes, twice a week. For data analysis, the appropriate statistical tests were used. Results A decrease in the latency of negative wave N2 and the positive wave P3 in the left ear in G1, and a decrease of P2 in the right ear in G2 were observed. In the analysis comparing the pre- and post-CAT groups, there was a significant difference in P1 latency in the left ear and P2 latency in the right ear, pre-intervention. Furthermore, eight children had an absence of the P3 wave, pre-CAT, but after the intervention, all of them presented the P3 wave. There were changes in the SAB score pre- and post-CAT in both groups. The presence of correlation between the scale and some LLAEP components was observed. Conclusion The CAT produced an electrophysiological modification, which became evident in the effects of the effects of neural plasticity after CAT. The SAB proved to be useful in measuring the therapeutic effects of the intervention. Moreover, there were behavioral changes in the SAB (higher scores) and correlation with LLAEP.

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