Functional Adequacy Research Papers

Based on the study into internal properties of components of the ship power plants (SPP) in the combined propulsion complexes (CPC) and considering special features in the construction of equations that characterize energy processes in... more

Based on the study into internal properties of components of the ship power plants (SPP) in the combined propulsion complexes (CPC) and considering special features in the construction of equations that characterize energy processes in the specific SPP of the particular CPC, we developed the principles of constructing their regression models according to data from experimental research. The function is defined that connects input variables and the output variable based on data of the experiment with the certain number of common observations of the input and output parameters. The check for adequacy of the obtained model was performed according to the experimental data.
Such studies are necessary in order to develop specialized software modeling tools that are used when designing CPC SPP whose structure may vary in certain specified operational limits and situational factors. Similar empirical models also make it possible to improve simulation modeling algorithms involving the use of statistical tests and construction of CPC SPP models based on experimental data.
As the result of present research, according to data obtained in the course of experiment, which contained 14 joint observations of the input and output parametric coordinates of the thruster drives (TDs) of CPC of the ship that operates under dynamic positioning mode, we estimated variation in the coefficients of regression equation and determined coefficients b0=0.4527; b1=–0.1126; b2=0.0848; b3=–0.0277; b4=0.0856, which refine the structure of regression model of SPP of CPC. For different levels of significance and degrees of freedom, the Student's t-criterion was computed for significance level α=0.06 and for the number of degrees of freedom 30 fy=30t(0.06; 30)=t(0.06; 2)=4.823, as well as the Fisher’s F-criterion Fe (0.06; 12; 2)=5.43, on the basis of which the conclusion was made that confirms adequacy of the obtained model according to the experimental tests.
Based on the constructed regression model, it is possible to adjust the position of CPC TD relative to each other and to the diametrical plane of the ship, as well as directions of TD rotation in the process of optimization of parameters of physical models of control systems of TD electric engines

EN This study aims to explore further the applicability of the six-point rating scale elaborated by Kuiken and Vedder (2017) to assess functional adequacy. According to the authors, functional adequacy (FA) is a multidimensional construct... more

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- by elena nuzzo
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  Functional Adequacy, Writing Task, Italian L2

Using functional magnetic resonance imaging during a verbal memory task, we investigated correlations of signal £uctuations within the hippocampus and ipsilateral frontal as well as temporal areas in temporal lobe epilepsy... more

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- by Timo Lothmann
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- 4
  Bible Translation, Pidgins and Creoles, Functional Adequacy, Tok Pisin

Task-based language assessment researches show mastering formal elements of a second language is not sufficient to achieve intended goal in real-world contexts (Mislevy et al. 2002). Although several authors have explored the measurement... more

Task-based language assessment researches show mastering formal elements of a second language is not sufficient to achieve intended goal in real-world contexts (Mislevy et al. 2002). Although several authors have explored the measurement of linguistic aspects of performances in terms of complexity, accuracy and fluency (CAF) (Housen, Kuiken 2009; Pallotti 2009), few studies actually report on how to rate the pragmatic dimension in L2 task fulfillment.
Kuiken and Vedder recently defined the construct of Functional Adequacy (FA) and developed two rating scales in order to assess writing and speaking argument tasks, demonstrating through experimental studies they are reliable for L2 and easy to handle for both expert and non-expert raters (Kuiken, Vedder 2011; 2014; forthcoming; Vedder 2016).
In our contribution, we replicate Kuiken and Vedder’s studies wondering if and how the FA rating scales are suitable for other types of tasks. The rationale is to test the flexibility and the accuracy of FA descriptors within a different educational context and possibly to propose improvements.
Thus, we asked 15 Marco Polo learners of Italian as L2 who attend the Language Center of Roma Tre University to perform five information-gap tasks, whose outcomes were descriptive, narrative and regulative texts. Following Kuiken and Vedder’s methodology, three expert and three non-expert raters assessed their written and oral performances applying FA rating scales. All scores were analyzed using SPSS and then discussed with the raters. Collected data provide insights into both theoretical and practical issues, regarding the definition of FA descriptors and the applicability of the rating scales. We observe all raters generally agreed about the holistic judgments of each performance, even if some differences arose when they applied the analytic FA descriptors. Moreover, a high correlation between scores let us assume that in such cases some descriptors overlap. Other results will be further discussed.

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Using functionalmagnetic resonance imaging during a verbalmemory task, we investigated correlations of signal £uctuations within the hippocampus and ipsilateral frontal aswell as temporal areas in temporal lobe... more

Functional Adequacy

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