Model Development for IT Human Performance Prediction

Author(s):  
Ian Britton ◽  
J. E. Donald Gauthier

This paper outlines the methodology and theory required for the development of a computer code for the performance prediction of centrifugal impellers. The theory is blended from two main sources on two-zone model development. The equations provided show a simplified version of previous two-zone models published while maintaining a similar level of accuracy in the prediction of pressure ratio and isentropic efficiency. The idea behind the development of the algorithm is the production of an impeller map which can be used in the preliminary design phase with a minimum amount of input information, namely basic geometry which could be determined from simple design point calculations. Validation of the model was performed against compressor maps and geometries available in the literature. It was subsequently shown that with the blending of inlet, diffusion ratio and two-zone models, a centrifugal impeller model was constructed which agreed well over a wide range of rotational speeds and mass flow rates.


Author(s):  
Joan Ryder ◽  
Thomas Santarelli ◽  
Jackie Scolaro ◽  
James Hicinbothom ◽  
Wayne Zachary

Cognitive models are human performance models that represent human knowledge and internal information manipulation processes. Many uses of cognitive models in training systems have been proposed in the literature, but actual applications have lagged behind, and comparative assessments are rare. To fill this gap, experiences in applying cognitive models in several different intelligent tutoring/training systems are reviewed and compared. All the applications were developed using the same cognitive modeling framework (COGNET) and software (iGEN™). The models fall into two main categories: expert performance models, used for tracing knowledge and actions, and instructional agents, used to predict, observe, and diagnose trainee use of specific knowledge sets and skills. Comparisons focus on the model development process and the efficacy of the resulting system. A set of preliminary conclusions on the selection and development of cognitive models in training systems is offered.


IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 136697-136724 ◽  
Author(s):  
Ravinesh C. Deo ◽  
Zaher Mundher Yaseen ◽  
Nadhir Al-Ansari ◽  
Thong Nguyen-Huy ◽  
Trevor Ashley Mcpherson Langlands ◽  
...  

Author(s):  
Mu Lin Wong ◽  
Senthil S.

Academic Performance Prediction models mustn't be accurate only, but timely too, to identify at-risk students at the earliest to provide remedy. Heart rate data of 50 students in 3 main courses are collected, processed, and analyzed to distinguish the difference between excellent students and at-risk students. Three of the 12 heart rate attributes were chosen to calculate the threshold values, which are used to predict at-risk students. Half of the at-risk students were identified after week 5. Later, the datasets were rebalanced. Using four Data Mining classifiers, six attributes were identified to be the best attributes for prediction model development. The datasets were then dimensionally reduced. Applying classification, half of the at-risk students were identified earliest around week 5 of the 12-week semester. J48 is the most robust classifier, compared to JRip, Multi-Level-Perceptron, and RandomForest, making accurate prediction on at-risk students earlier most of the time.


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