Table 1.

System component definitions.

Components	Definitions	Elements	Reference
C1: engagement consequences	The desired results of engagement behavior	E11: loyalty and satisfaction E12: empowerment E13: connection and emotional bonds E14: trust and commitment	[89]
C2: engagement behavior	The interaction and value co-creation behavior of community members	E21: sharing E22: learning E23: co-development E24: advocating E25: socializing	[89]
C3: perceived behavioral control	An individual's perception on the ease or difficulty of conducting the behavior	—	[51, 90]
C4: attitude	A favorable or unfavorable evaluation of something	E41: object-based attitude E42: behavioral attitude	[59]
C5: environmentally Conscious Behavior	Recognizing the serious of environmental problems, people proactively engaged in recycling, saving electricity and water, and so forth	E51: environmental concern E52: perceived customer effectiveness	[91]
C6: subjective norms	An individual's estimate of the social pressure on him/her to engage or not engage in the target behavior	—	[51]
C7: perceived usefulness	Beliefs concerning instrumental outcomes associated with technology use	—	[92]
C8: perceived ease of use	Beliefs that technology use will be relatively free of cognitive burden	—	[92]
C9: information satisfaction	The degree of favorableness with respect to the information produced by the system	—	[59]
Ca: system satisfaction	The degree of favorableness with respect to the system and the mechanics of interaction	—	[59]
Cb: information quality	Desired features of the information produced by the system	Cb1: completeness Cb2: accuracy Cb3: format Cb4: currency	[59]
Cc: system quality	Desired features of the system and the mechanism of interaction	Cc1: reliability Cc2: flexibility Cc3: integration Cc4: accessibility Cc5: timeliness	[59]