Background : Cynanchum wilfordii and Cynanchum auriculatum belong to the Asclepiadaceae family and appear morphologically similar. In order to discriminate them, it is needed to find the presence of sap and the leaf shapes: C. auriculatum has a blade ovate leaf comparing to C. wilfordii. However, in the herbal medicine market, they have been handled as cut and dried roots. Due to their similar morphology, it is limited to distinguish the roots of C. wilfordii and C. auriculatum. Recently in Korea, it has been a critical issue to misuse these two roots in the herbal market and food industry. Thus, it is required to establish a robust tool for the discrimination and quality control of them. Methods and Results : To separation and characterization of flavor compounds, C. wilfordii and C. auriculatum samples were analyzed by head space solid phase micro extraction (HSS) fiber coupled with gas chromatography-mass spectrometry using Rtx-5MS (30 m x 0.25 mm x 0.25 μm) column. As a result, We have identified compounds of a few hundred in aliphatic aldehydes and aliphatic alcohols, alkenes and acids, aromatic compounds, aromatic compounds containing nitrogen & sulfur, etc,. In particular, The aliphatic and aromatic compounds had been clearly separated on the second dimensional direction by using two-dimensional GC. Conclusion : The volatile flavor compounds of C. wilfordii and C. auriculatum could easily analyzed without pre-treatment with improved resolution and sensitivity using HSS-GCxGC-TOFMS. We have identified compounds of a few hundred in C. wilfordii and C. auriculatum sample. And It was more accurately qualitative confirmed with separation of GCxGC and TSD. We have confirmed the PCA and PLS-DA Plot that was classified depending on C. wilfordii and C. auriculatum through multivariate statistical analysis of the identified flavor compounds.

본 실증적 연구의 목적은 MMORPG 게이머의 개인적, 사회적 특성이 게임에서의 창발적 행동에 어떠한 영향을 미치는지 알아보고, 게이머들의 이타적 행동과 조직 순응적 행동 유도에 대한 학술적, 실무적 시사점을 제공하는 것이다. 이를 위해 조직시민행동 이론을 토대로 가설을 설정하여, 리니지2 플레이어 231명을 대상으로 실증분석을 하였다. 분석 결과, 게임에서 형성된 ‘개인 요인’인 자기효능감, 직무만족 그리고 ‘사회관계 요인’인 과업상호의존성, 신뢰는 게이머의 창발적 파티 플레이에 유의미한 영향을 미치는 것으로 나타났다.