The impact of instructions on aircraft visual inspection performance: A first look at the overall results

2003 ◽  
Author(s):  
Caren Wenner ◽  
Floyd Spencer ◽  
Colin Drury
Keyword(s):  
Visual Inspection ◽  
The Impact ◽  
Inspection Performance

The Impact of Inspector’s Cognitve Style on Performance in Varous Visual Inspection Display Tasks

2016 ◽  
Vol 60 (1) ◽  
pp. 1379-1383 ◽  
Author(s):  
Richard T. Stone ◽  
Thomas Schnieders ◽  
Chen-Shuang Wei ◽  
Tyler Oviatt
Keyword(s):  
Visual Inspection ◽  
Positive Impact ◽  
Cognitive Styles ◽  
Job Aids ◽  
Performance Accuracy ◽  
Overall Performance ◽  
Task Conditions ◽  
The Impact ◽  
Inspection Performance ◽  
Job Aid

Three aspects of visual inspection were considered in this study. The three aspects considered to effect inspection performance are (1) cognitive styles, (2) feedforward training (job aid), and (3) pacing. In this study, the Matching Familiar Figures Test (MFFT) was administered and the basic (control), static (self- pacing), and hybrid (systematic pacing) displays were used to investigate the pacing effect. The objective was to classify the inspectors into different categories via the MFFT based on their cognitive styles, and also to investigate inspection performance (accuracy and response time) affected by the job aids as cognitive styles. The results indicate that the MFFT is effective in all task conditions. The job aid was also found to have a positive impact on the overall performance.

scholarly journals Collaborative Virtual Environment to Simulate on-the-Job Aircraft Inspection Training Aided by Hand Pointing

2005 ◽  
Vol 49 (25) ◽  
pp. 2216-2220
Author(s):  
S. Sadasivan ◽  
R. Rele ◽  
J. S. Greenstein ◽  
A. K. Gramopadhye ◽  
J. Masters ◽  
...  
Keyword(s):  
Virtual Environment ◽  
Visual Inspection ◽  
Training Environment ◽  
Virtual Training ◽  
Collaborative Virtual Environment ◽  
Feedback Training ◽  
Inspection Process ◽  
Safety And Reliability ◽  
The One ◽  
Inspection Performance

The human inspector performing visual inspection of an aircraft is the backbone of the aircraft inspection process, a vital element in assuring safety and reliability of an air transportation system. Training is an effective strategy for improving their inspection performance. A drawback of present-day on-the-job (OJT) training provided to aircraft inspectors is the limited exposure to different defect types. Previous studies have shown offline feedback training using virtual reality (VR) simulators to be effective in improving visual inspection performance. This research aims at combining the advantages of VR technology that includes exposure to a wide variety of defects and the one-on-one tutoring approach of OJT by implementing a collaborative virtual training environment. In an immersive collaborative virtual environment (CVE), avatars are used to represent the co-participants. In a CVE, information of where the trainer is pointing can be provided to a trainee as visual deictic reference (VDR). This study evaluates the effectiveness of simulating on-the-job training in a CVE for aircraft inspection training, providing VDR slaved to a 3D mouse used by the trainer for pointing. The results of this study show that the training was effective in improving inspection performance.

Abstract P369: Impact of Enhanced External Counterpulsation on Exercise Duration in Patients With Chronic Stable Angina: A Meta-analysis

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Sachin A Shah ◽  
Bradley R Williams ◽  
Atiera Andrews-Pestana
Keyword(s):  
Publication Bias ◽  
Stable Angina ◽  
Visual Inspection ◽  
Chronic Stable Angina ◽  
Exercise Duration ◽  
External Counterpulsation ◽  
Bruce Protocol ◽  
Funnel Plots ◽  
The Impact ◽  
Enhanced External Counterpulsation

Introduction: Enhanced External Counterpulsation (EECP) is a non-invasive Food and Drug Administration approved treatment for patients with chronic stable angina and heart failure. Typical treatment regimen comprises of 35, 1-hour sessions of synchronized compressions of the calf, thigh, and sacral muscles over a seven-week period. Exercise duration measured using an exercise tolerance test is a commonly utilized marker of worsening ischemic disease and is predictive of cardiovascular mortality. Several studies have evaluated the impact of EECP on exercise duration with conflicting results. We sought to determine the magnitude of benefit of EECP on exercise duration. Methods: A literature search was performed in MEDLINE, CINAHL, and the Cochrane database along with hand searching of relevant articles limited to those published in the English language. Studies were included for analyses if assessing patients with stable angina and reporting exercise duration data using either the Bruce or modified Bruce exercise treadmill test. Appropriate data were extracted at baseline and after completion of the full course of EECP. Studies were excluded if presenting duplicate data or using a non-Bruce protocol. A weighted mean difference from baseline along with 95% confidence interval was calculated using the DerSimonian-Laird random-effects model. Sub-group analyses, the Cochran Q statistic, and JADAD scores were utilized to assess for heterogeneity, non-combinability, and quality of published studies respectively. Publication bias was assessed using visual inspection of funnel plots and the Egger bias statistic. Results: Our search strategy identified 1117 independent studies of which 15 were included for analyses. A total of 484 individual subjects were incorporated in the primary analysis. Exercise duration improved by 55.5 seconds (95%CI 36.1 to 74.9; Cochran Q, p=0.246) from baseline. The benefits were maintained when using a fixed-effects model, excluding small studies and limiting to studies using the Bruce protocol only. While the Egger statistic showed a lack of publication bias (p=0.121), it cannot be ruled out based on visual inspection of funnel plots. Conclusion: EECP significantly increases exercise duration by 56 seconds in patients with chronic stable angina. Further studies are needed to determine the impact of EECP on long-term outcomes. The views expressed in this material are those of the authors, and do not reflect the official policy or position of the U.S. Government, the Department of Defense or the Department of the Air Force.

A Comparison of Orthogonal Transforms in Engineering Computer Vision

1990 ◽  
Vol 204 (5) ◽  
pp. 321-327 ◽  
Author(s):  
G A H Al-Kindi ◽  
R M Baul ◽  
K F Gill
Keyword(s):  
Computer Vision ◽  
Machine Vision ◽  
Visual Inspection ◽  
Computational Time ◽  
Transform Coefficients ◽  
Orthogonal Transforms ◽  
The Impact

A comparison of a number of commonly used orthogonal transforms, when applied to the recognition and visual inspection of engineering components, has been made. The impact on the performance and computational time for the machine vision process due to varying numbers of transform coefficients is assessed.

Impact of Feedback Training in Cbt in Visual Inspection

2002 ◽  
Vol 46 (25) ◽  
pp. 2079-2083 ◽  
Author(s):  
Jiao Ma ◽  
Colin G. Drury ◽  
Ann M. Bisantz
Keyword(s):  
Performance Measures ◽  
Performance Feedback ◽  
Visual Inspection ◽  
Search Time ◽  
Difficulty Level ◽  
Process Assessment ◽  
Computer Based Training ◽  
Feedback Training ◽  
On Line ◽  
Inspection Performance

Training has been a consistently effective intervention in improving inspection performance. For example, existing inspection training in the aircraft maintenance domain is mainly a combination of classroom and on-the-job training (OJT). Computer-based training (CBT) has been promoted ever since it was introduced to this domain. In this study we investigate how effectively feedback training can be combined with CBT to improve visual inspection performance. Specifically, we examine the potential positive impacts of performance and process feedback in CBT, given in an on-line manner, on a trainee's performance and process assessment in a visual inspection task. The CBT system for inspection we used was adopted from the ASSIST program (Chen, Gramopadhye and Melloy, 2000). In our computer simulation of a familiar situation, participants were asked to search certain areas inside of a car in order to detect certain targets (dropped coins) with the aid of computerized tools (e.g., a magnifying glass, a flashlight), and fill out an inspection report based upon detection. A significant test effect was found across performance measures. Type of feedback training was found to be significant for search time. Performance measures were significantly correlated with target difficulty level; on-line performance feedback was significantly more efficient in improving performance measures than conventional delayed performance feedback; feedback training did affect process assessment measures.

The impact of HIV-related neuropsychological dysfunction on driving behavior

2000 ◽  
Vol 6 (7) ◽  
pp. 854-854 ◽  
Author(s):  
THOMAS D. MARCOTTE ◽  
ROBERT K. HEATON ◽  
TANYA WOLFSON ◽  
MICHAEL J. TAYLOR ◽  
OMAR ALHASSOON ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Positive Predictive Value ◽  
Predictive Value ◽  
Visual Inspection ◽  
Driving Behavior ◽  
Personality Change ◽  
Impaired Consciousness ◽  
Neuropsychological Dysfunction ◽  
Gcs Score ◽  
The Impact

The following is a correction for an error that occurred in the Journal of the International Neuropsychological Society, Vol. 6, No. 3. The error occurred in the article titled “Personality change disorder in children and adolescents following traumatic brain injury,” pp. 279–289, by Max et al. On page 285, under the subheading “Injury Factors,” beginning with the second sentence in the first paragraph, the statement should read:Visual inspection of the distribution of PC relative to lowest post-resuscitation GCS scores revealed that a cut-off of lowest post-resuscitation GCS score of 4 or less versus more than 4 yielded a sensitivity for a diagnosis of persistent PC of 9/14 (64.3%), specificity of 18/23 (78.3%), and a positive predictive value of 0.64 (9.14).A cut-off of duration of impaired consciousness of 100 hr or less versus more than 100 hr yielded a sensitivity for a diagnosis of persistent PC of 11/14 (78.6%), specificity of 20/23 (87.0%), and a positive predictive value (PPV) of 0.79 (11/14).

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