Situational Awareness in Map Displays

1987 ◽  
Vol 31 (5) ◽  
pp. 533-535 ◽  
Author(s):  
William P. Marshak ◽  
Gilbert Kuperman ◽  
Eric G. Ramsey ◽  
Denise Wilson
Keyword(s):  
Error Rate ◽  
Situational Awareness ◽  
Subjective Ratings ◽  
Subjective Data ◽  
Lower Error ◽  
Lower Error Rate ◽  
Moving Plane ◽  
Simple Paths ◽  
Relationship Of ◽  
The Relationship

The effectiveness of ego-centered (moving map) and earth-centered (moving plane) displays was studied with subjects monitoring an animated aircraft situational awareness display. Other independent variables were subject experience (aircrew vs non-aircrew) and path complexity (straight vs turning). Periodically, the display blanked and probe questions were asked concerning the relationship of the aircraft to the simulated world. Questions included judgements about angles, distances, time and terrain. Simple paths elicited a 28 percent lower error rate than did complex paths. Moving map displays had a 32 percent lower error rate than moving plane displays. No other significant effects were observed. Subjective ratings by subjects after the experiment revealed unanimous preference for the moving plane display and that the moving plane condition was believed to be easier! This contradiction indicates subjective data is limited in determining display effectiveness.

The relationship of medium noise to system error rate in a PRML channel

1994 ◽  
Vol 30 (6) ◽  
pp. 3990-3995 ◽  
Author(s):  
J. Fitzpatrick ◽  
H.N. Bertram ◽  
Xiaodong Che ◽  
L.C. Barbosa ◽  
G.H. Lin
Keyword(s):  
Error Rate ◽  
System Error ◽  
Relationship Of ◽  
The Relationship

Research of the Flow Sampling Algorithm

2012 ◽  
Vol 472-475 ◽  
pp. 2588-2591
Author(s):  
Yan Liu
Keyword(s):  
Error Rate ◽  
Flow Measurement ◽  
Sampling Method ◽  
Sample Space ◽  
Sampling Algorithm ◽  
Fine Grained ◽  
Lower Error ◽  
Lower Error Rate

This article presents a flow measurement sampling method based on the application group, which identify the received message and then trasmit the identified packets to the corresponding application packet sample space, after this sampling each space packet independently. Thus to ensure the network to restore the situation in the application of fine-grained has lower error rate, thereby reducing the distortion of the application distribution.

scholarly journals Interference Spreading through Random Subcarrier Allocation Technique and Its Error Rate Performance in Cognitive Radio Networks

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5700
Author(s):  
Amit Kachroo ◽  
Adithya Popuri ◽  
Mostafa Ibrahim ◽  
Ali Imran ◽  
Sabit Ekin
Keyword(s):  
Cognitive Radio ◽  
Error Rate ◽  
Orthogonal Frequency Division Multiplexing ◽  
Random Allocation ◽  
Secondary Users ◽  
Interference Temperature ◽  
Primary Users ◽  
Relationship Of ◽  
The Relationship ◽  
Ber Performance

In this letter, we investigate the idea of interference spreading and its effect on bit error rate (BER) performance in a cognitive radio network (CRN). The interference spreading phenomenon is caused because of the random allocation of subcarriers in an orthogonal frequency division multiplexing (OFDM)-based CRN without any spectrum-sensing mechanism. The CRN assumed in this work is of underlay configuration, where the frequency bands are accessed concurrently by both primary users (PUs) and secondary users (SUs). With random allocation, subcarrier collisions occur among the carriers of primary users (PUs) and secondary users (SUs), leading to interference among subcarriers. This interference caused by subcarrier collisions spreads out across multiple subcarriers of PUs rather than on an individual PU, therefore avoiding high BER for an individual PU. Theoretical and simulated signal to interference and noise ratio (SINR) for collision and no-collision cases are validated for M-quadrature amplitude modulation (M-QAM) techniques. Similarly, theoretical BER performance expressions are found and compared for M-QAM modulation orders under Rayleigh fading channel conditions. The BER for different modulation orders of M-QAM are compared and the relationship of average BER with interference temperature is also explored further.

The Relationship of Subject Evaluation Factors on the Elastic Trousers

2014 ◽  
Vol 1048 ◽  
pp. 254-258
Author(s):  
Lei Xia ◽  
Ling Yin
Keyword(s):  
Quantitative Evaluation ◽  
Female Students ◽  
Engineering Science ◽  
Knitted Fabrics ◽  
Subjective Data ◽  
Continuous State ◽  
Subjective Experiment ◽  
Clothing Pressure ◽  
Relationship Of ◽  
The Relationship

In this study, eight different elastic knitted fabrics were chosen to make eight tight trousers of the same style and same size, and ten female students at Shanghai University of Engineering Science were chosen to try on these trousers. In the subjective experiment, 5 levels quantitative evaluation methods were adopted which the sensory characteristics was divided into 5 grades. On three kind of continuous state, each wearer was asked to evaluate on the stretch pants separately. By analyzing the subjective data, we can make a conclusion that the clothing pressure comfort and the sense of restraint are related not only to clothing pressure, but also to some other physiological and psychological feeling of wearer.

scholarly journals Detecting Image Splicing Using Merged Features in Chroma Space

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Bo Xu ◽  
Guangjie Liu ◽  
Yuewei Dai
Keyword(s):  
Error Rate ◽  
Previous Literature ◽  
Experimental Results ◽  
Image Editing ◽  
Image Splicing ◽  
Lower Error ◽  
Lower Error Rate ◽  
Image Dataset ◽  
Splicing Detection ◽  
Markov Features

Image splicing is an image editing method to copy a part of an image and paste it onto another image, and it is commonly followed by postprocessing such as local/global blurring, compression, and resizing. To detect this kind of forgery, the image rich models, a feature set successfully used in the steganalysis is evaluated on the splicing image dataset at first, and the dominant submodel is selected as the first kind of feature. The selected feature and the DCT Markov features are used together to detect splicing forgery in the chroma channel, which is convinced effective in splicing detection. The experimental results indicate that the proposed method can detect splicing forgeries with lower error rate compared to the previous literature.

The Difference of Preference versus Performance can Differ for Concurrent versus Retrospective Ratings

2000 ◽  
Vol 44 (37) ◽  
pp. 617-620 ◽  
Author(s):  
Srinivas Raghavan ◽  
Gary Perlman
Keyword(s):  
Subjective Ratings ◽  
Evaluation Measures ◽  
Objective Performance ◽  
Subjective Preference ◽  
Separate Treatment ◽  
Objective Performance Measures ◽  
Preference Ratings ◽  
The Difference ◽  
Relationship Of ◽  
The Relationship

Several studies have found differences between subjective preference ratings and objective performance measures. Bailey [Bailey 93] summarizes several, and argues for separate treatment of these concepts. Our results in a multifactor multivariate experiment support Bailey's contention, but adds a new dimension of concern: the use of concurrent versus retrospective subjective ratings. The presentation here will focus on the relationship of performance and concurrent versus retrospective preference ratings. Retrospective ratings may represent users' lasting impressions of a system after a trial use, but may not be good predictors of performance. Concurrent ratings of confidence of accuracy were found, in this study, to be better predictors performance. We offer recommendations about how to make the best use of these different evaluation measures, particularly when they differ.

scholarly journals Effectiveness Of Village Fund Management On Increasing Community Welfare With Management Religiosity Behavior As Moderating Variables

2020 ◽  
Vol 6 (1) ◽  
pp. 47-64
Author(s):  
Aswadi Lubis
Keyword(s):  
Rural Communities ◽  
Rural Community ◽  
Error Rate ◽  
Fund Management ◽  
Moderating Variables ◽  
Village Community ◽  
Relationship Of ◽  
The Village ◽  
The Relationship ◽  
The City

Community welfare is one of the goals expected by each region including in Padangsidimpuan city. Based on data obtained the amount of poverty in Padangsidimpuan city experienced fluctuations from 2008 to 2015. The formulation of the problem in this study is whether there is an effect of the effectiveness of village fund management on improving the welfare of rural communities in Padangsidimpuan city. Does the manager’s religiosity behavior moderate the influence of village fund management by increasing the welfare of rural communities in Padangsidimpuan City? This type of research is causality research using quantitative data. The population of this study is the village community in the city of Padangsidimpuan with a total of 41 villages. Given the limitations of the author, the sample in this study was taken by 5 people from each village, namely 5 x 41 villages = 205 villagers. Data collection techniques used were questionnaires and data analysis conducted with Smart PLS. Based on the results, it was found the value of the village fund management pathway affected the welfare of the village community of 5.875 with a probability value of 0.024. Because the t-count value (5.875) is greater than critical t (1.96) at the 5% error rate, it can be concluded there is an effect of the effectiveness of village fund management on improving the welfare of rural communities in Padangsidimpuan City. And the t-count value of the manager's religiosity behavior trends moderates the relationship of village fund management to rural community welfare of 0.458 with a probability value of 0.031. Because the t-count (0.458) is greater than the critical t (1.96) at the 5% error rate, it can be concluded that the manager's religiosity behavior can moderate the relationship between village fund management and the improvement of the welfare of rural communities in Padangsidimpuan City.

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