Continuous Test of Silica-PEI Absorbents in the Lab.-Scale Twin Bubbling-Beds System

2019 ◽  
Author(s):  
Jae-Young Kim ◽  
Je-Min Woo ◽  
Sung-Ho Jo ◽  
Seung-Yong Lee ◽  
Jong-Ho Moon ◽  
...  
Keyword(s):  
Continuous Test ◽  
Bubbling Beds

CFD simulations of bubbling beds of rough spheres

2008 ◽  
Vol 63 (23) ◽  
pp. 5653-5662 ◽  
Author(s):  
Shuyan Wang ◽  
Huilin Lu ◽  
Xiang Li ◽  
Long Yu ◽  
Jianmin Ding ◽  
...  
Keyword(s):  
Cfd Simulations ◽  
Bubbling Beds

Measurement of Two Kinds of Granular Temperatures, Stresses, and Dispersion in Bubbling Beds

2005 ◽  
Vol 44 (5) ◽  
pp. 1329-1341 ◽  
Author(s):  
Jonghwun Jung ◽  
Dimitri Gidaspow ◽  
Isaac K. Gamwo
Keyword(s):  
Bubbling Beds

scholarly journals Determination of ventilatory threshold based on rating of perceived exertion scale

2004 ◽  
Vol 132 (11-12) ◽  
pp. 409-413 ◽  
Author(s):  
Stanimir Stojiljkovic ◽  
Dejan Nesic ◽  
Sanja Mazic ◽  
Dejana Popovic ◽  
Dusan Mitrovic ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Ventilatory Threshold ◽  
Rating Of Perceived Exertion ◽  
Physically Active ◽  
Mean Values ◽  
Significant Difference ◽  
Continuous Test ◽  
Dependent Samples ◽  
Increasing Load

The objective of the study was to test the possibility of using the fixed value (12-13) of the Rating of Perceived scale (RPE scale), as a valid method for determination of ventilatory threshold (VT). The sample of the subjects included 32 physically active males (age: 22.3; TV: 180.5; TM: 75.5 kg; V02max: 57.1 mL/kg/min). During the continuous test of progressively increasing load on a treadmill, cardiorespiratory and other parameters were monitored using ECG and gas analyzer. Following the test, VT and V02max were determined. During the test, at each level, at the scale from 6 to 20, the subjects pointed the number that suited best their currently feeling of strain. The RPE threshold was defined as constant value of 12-13. Average values of ventilatory and RPE threshold were expressed by parameters that were monitored and then compared by using t-test for dependent samples. No significant difference was found between mean values of VT and RPE threshold, when they were expressed by relevant parameters: speed, load, heart rate, absolute and relative oxygen consumption. Fixed value (12-13) of RPE scale may be used to detect the exercise intensity that corresponds to ventilatory threshold.

scholarly journals Bias-Variance Trade-Off in Continuous Test Norming

Assessment ◽  
2020 ◽  
pp. 107319112093915
Author(s):  
Lieke Voncken ◽  
Casper J. Albers ◽  
Marieke E. Timmerman
Keyword(s):  
Generalized Additive Models ◽  
Population Level ◽  
Additive Models ◽  
Distributed Data ◽  
Score Distribution ◽  
Population Distributions ◽  
Continuous Test ◽  
Model Flexibility ◽  
Bias Variance ◽  
T Distribution

In continuous test norming, the test score distribution is estimated as a continuous function of predictor(s). A flexible approach for norm estimation is the use of generalized additive models for location, scale, and shape. It is unknown how sensitive their estimates are to model flexibility and sample size. Generally, a flexible model that fits at the population level has smaller bias than its restricted nonfitting version, yet it has larger sampling variability. We investigated how model flexibility relates to bias, variance, and total variability in estimates of normalized z scores under empirically relevant conditions, involving the skew Student t and normal distributions as population distributions. We considered both transversal and longitudinal assumption violations. We found that models with too strict distributional assumptions yield biased estimates, whereas too flexible models yield increased variance. The skew Student t distribution, unlike the Box–Cox Power Exponential distribution, appeared problematic to estimate for normally distributed data. Recommendations for empirical norming practice are provided.

Continuous Test Generation on Guava

2015 ◽  
pp. 228-234 ◽  
Author(s):  
José Campos ◽  
Gordon Fraser ◽  
Andrea Arcuri ◽  
Rui Abreu
Keyword(s):  
Test Generation ◽  
Continuous Test

Potassium-Modified Iron Ore as Oxygen Carrier for Coal Chemical Looping Combustion: Continuous Test in 1 kW Reactor

2014 ◽  
Vol 53 (33) ◽  
pp. 13006-13015 ◽  
Author(s):  
Haiming Gu ◽  
Laihong Shen ◽  
Zhaoping Zhong ◽  
Xin Niu ◽  
Huijun Ge ◽  
...  
Keyword(s):  
Iron Ore ◽  
Oxygen Carrier ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Continuous Test
Sign in / Sign up

Export Citation Format

Share Document