Although federal rules govern academic study of human subjects, universities, which approve professors' research methods, have different interpretations of the guidelines.
It is observed that source identification methods have different robustness in the presence of uncertainties.
The field test and the laboratory test methods have different advantages.
"Both the bottom-up and top-down communities are trying to understand the sources of methane, but the different methods have different strengths, and we are working on making them more compatible," he said.
Different optimization methods have different search tendency and it is always required to experiment the effect of hybridizing different search tendency of the optimization algorithm with each other.
The study included the environmental impact at the production phase of the system, because alternative production methods have different kinds of environmental burdens.
However, the two reforming processes of steam and autothermal methods have different characteristics, thus they have different and often opposite design requirements.
Different dimensionality reduction methods have different performances in dimensionality reduction, which can be measured by prediction accuracies of some common statistical models, such as Naive Bayes classifier, linear discriminant analysis, quadratic discriminant analysis, and classification and regression tree.
The regression methods have different strengths and weaknesses.
However, EV isolation methods have different yields and purities.
Mobile phases used in these methods have different pH values.
