Feature Evaluation for Effective Bearing Prognostics.

International audienceRolling element bearing failure is one of the foremost causes of breakdown in rotating machinery. It is not uncommon to replace a defected/used bearing with a new one that has shorter remaining useful life than the defected one. Thus, prognostics of bearing plays critical role for increased availability and reduced cost. Effective prognostics highly depend on the quality of the extracted features. Diagnostics is basically a classification problem, whereas the prognostics is the process of forecasting the future health states. The quality of the features for classification has been studied thoroughly. However, evaluation of the quality of features for prognostics is a relatively new problem. This paper presents an evaluation method for the goodness of the features for prognostics and presents results on bearings run until failure in a lab environment

A return to virtue ethics: Virtue ethics, cognitive science and character education

Morality in church and society is a burning issue. Church leaders know that the challenges are both formidable and urgent, yet finding solutions is easier said than done. The question this article asks is how can we educate for character? In the past, deontology or rule ethics reigned supreme, virtue ethics, however, gradually made a comeback. Currently virtue ethics is an important part of character education in the United States of America, especially with schools affiliated with churches. Recent insights provided by researchers focusing on cognitive science (working from the vantage point of cognitive and social psychology) have managed to prove the legitimacy of virtue ethics but remind us that virtues must not be drilled into children; moral deliberation and imagination must be fostered in order to cultivate individuals with moral character that will be able to reflect on their own received tradition. I provide an example of such a method of education when I explain Integrative Ethical Education as formulated by Darcia Narvaez.Intradisciplinary and/or interdisciplinary implications: This article confirms the validity of virtue ethics but calls for a change in the standard method of character education that exclusively emphasises knowledge of the Bible and strict obedience to the morals that the local community derives from the Bible, to an approach that also encourages teachers to help foster independent thinkers neither lacking in character nor the ability to reflect critically on their own tradition. I do believe that such a change is possible as was recently shown by the implementation of Darcia Narvaez�s Integrative Ethical Education in the United States of America