Knowledge-sharing intention in a virtual community: a study of participants in the Chinese Wikipedia.

This study proposes a model for evaluating virtual community members' knowledge-sharing intention toward Chinese Wikipedia. The results of this study reveal that knowledge-sharing intention is influenced directly by attitude, subjective norms, and perceived behavioral control, whereas anticipated reciprocal relationships and enjoying helping are positively related to attitude; sense of self-worth and peer influences are positively related to subjective norms; and self-efficacy and resource-facilitating conditions are positively related to perceived behavioral control on knowledge sharing.

Respiratory response to carbon dioxide stimulation during low flow supplemental oxygen therapy in chronic obstructive pulmonary disease.

Background And Purpose: Oxygen supplementation is the treatment most commonly used to relieve dyspnea in chronic obstructive pulmonary disease (COPD). There is a lack of data, however, on the response of the respiratory drive to low flow oxygen in severe stable COPD. The purpose of this investigation was to evaluate the magnitude of chemoresponsiveness to low flow supplemental oxygen in patients with COPD of variable severity in terms of mouth occlusion pressure at 100 msec (P0.