Computation of the response-error-gradient of linear discrete filters

1974 ◽  
Vol 22 (1) ◽  
pp. 62-65 ◽  
Author(s):  
L. Willimann
Keyword(s):  
Author(s):  
Luke Roberts ◽  
Hugh A. Bruck ◽  
Satyandra K. Gupta

Flapping wing miniature aerial vehicles (FWMAVs) offer advantages over traditional fixed wing or quadrotor MAV platforms because they are more maneuverable than fixed wing aircraft and are more energy efficient than quadrotors, while being quieter than both. Currently, autonomy in FWMAVs has only been implemented in flapping vehicles without independent wing control, limiting their level of control. We have developed Robo Raven IV, a FWMAV platform with independently controllable wings and an actuated tail controlled by an onboard autopilot system. In this paper, we present the details of Robo Raven IV platform along with a control algorithm that uses a GPS, gyroscope, compass, and custom PID controller to autonomously loiter about a predefined point. We show through simulation that this system has the ability to loiter in a 50 meter radius around a predefined location through the manipulation of the wings and tail. A simulation of the algorithm using characterized GPS and tail response error via a PID controller is also developed. Flight testing of Robo Raven IV demonstrated the success of this platform, even in winds of up to 10 mph.


1980 ◽  
Vol 17 (2) ◽  
pp. 265-268 ◽  
Author(s):  
Stephen W. McDaniel ◽  
C. P. Rao

A mailed questionnaire study examined the effect of a 25-cent monetary inducement on three components of response quality: item omission, response error, and completeness of answer. The monetary inducement is found to decrease item omission and response error significantly. Some research support is shown for improving completeness of answer.


2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Marissa Ayano Mes ◽  
Amy Hai Yan Chan ◽  
Vari Wileman ◽  
Caroline Brigitte Katzer ◽  
Melissa Goodbourn ◽  
...  

2019 ◽  
Vol 83 (3) ◽  
pp. 598-626 ◽  
Author(s):  
Caroline Roberts ◽  
Emily Gilbert ◽  
Nick Allum ◽  
Léïla Eisner

Abstract Herbert Simon’s (1956) concept of satisficing provides an intuitive explanation for the reasons why respondents to surveys sometimes adopt response strategies that can lead to a reduction in data quality. As such, the concept rapidly gained popularity among researchers after it was first introduced to the field of survey methodology by Krosnick and Alwin (1987), and it has become a widely cited buzzword linked to different forms of response error. In this article, we present the findings of a systematic review involving a content analysis of journal articles published in English-language journals between 1987 and 2015 that have drawn on the satisficing concept to evaluate survey data quality. Based on extensive searches of online databases, and an initial screening exercise to apply the study’s inclusion criteria, 141 relevant articles were identified. Guided by the theory of survey satisficing described by Krosnick (1991), the methodological features of the shortlisted articles were coded, including the indicators of satisficing analyzed, the main predictors of satisficing, and the presence of main or interaction effects on the prevalence of satisficing involving indicators of task difficulty, respondent ability, and respondent motivation. Our analysis sheds light on potential differences in the extent to which satisficing theory holds for different types of response error, and highlights a number of avenues for future research.


1985 ◽  
Vol 31 (11) ◽  
pp. 1802-1805 ◽  
Author(s):  
W A Sadler ◽  
M H Smith

Abstract Estimation of the response-error relationship in immunoassay provides a weighting function for the main analysis, and may in general be essential to ensure statistically valid data reduction. In this study we generated 50,000 sets of simulated radioimmunoassay response data with a computer, using five response-error functional forms that are commonly assumed. Parameters were estimated by three least-squares regression methods and three that are modifications of a maximum-likelihood method. Two likelihood estimators that require significantly different computing times were shown to be virtually indistinguishable, statistically more efficient than least-squares estimators, and-in contrast to least-squares estimators-to guarantee positive predicted variances in the range of the data.


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