## 4 Simulation Modeling for CN Emotion Appraisal
### IMEA SD Model
#### 4.1.1 Definition of Variables  
According to the C-EMO framework, the variables of the IMEA component are the ones that are provided by the _evidence_ and _internal stimuli and goals_ input vectors, as shown in Figure 2. The adopted definition of the evidences vector variables for the IMEA SD model is included in Table 3, below. \begin{table}
\begin{tabular}{c c} \hline \hline
**Evidences** & **Definition** \\ \hline
**Valence** & The latest value of valence, so it represents the initial value of valence before the new estimation. \\ \hline
**Arousal** & The latest value of arousal, so it represents the initial value of arousal before the new estimation. \\ \hline
**Valence Decay** & The value of the decay that the valence dimension of IME assumes for the CN member. \\ \hline
**Arousal Decay** & The value of the decay that the arousal dimension of IME assumes for the CN member. \\ \hline
**Virtual Organization** & The number of times a CN member takes the initiative to prepare a new business to the CN. \\ \hline
**VO Participation as** & The number of times the CN member is selected to form part of a VO. \\
**Partner** & The assessment of the performance of the member, according to a set of performance indicators. \\ \hline
**Needs and Expectations** & The value regarding the level of needs and expectations that were accomplished or met in what concerns the member involvement in the CN. \\ \hline
**Income from CN** & The total earnings of a CN member resulting from its participation in VOs inside the CN environment. \\ \hline
**Income Other** & The total earnings of a CN member resulting from its participation in external activities to the CN. \\ \hline
**Costs and Expenses** & The amount of costs and expenses a CN member had independently of being inside the CN or outside. \\ \hline
**Belonging Informal** & The ratio of the number of informal networks the CN member belongs to, in relation to the total active informal networks within the CN environment. \\ \hline
**Shared Knowledge wnd** & The ratio of the total amount of knowledge and resources a CN member shared in relation to the total knowledge and resources present within the CN environment. \\ \hline
**Communication** & The rate at which the CN member communicates with others within the CN environment. This variable reflects a result of a social network analysis over the CN environment. \\ \hline
**Communication** & The rate of understandability of the CN environment about the messages sent by the member. Reflects a result of a social network analysis over the CN environment. \\ \hline
**Total CN Members** & The total number of registered members in the CN. \\ \hline
**Total CN VOs** & The total number of VOs operating within the CN environment. \\ \hline
**ANE State** & The last known value of the ANE state. \\ \hline
**CN Trust** & The value of the trust assessment results that is conducted to all members. \\ \hline
**CN Value System** & The measure of the alignment of the core value system of the CN with the core value systems of all CN members. \\ \hline
**Invitation to form VOs** & The occurrence of the event “invitation to form VO”. The event is triggered when the CN member receives an invitation from the VO planner to join the VO. \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Definition of the variables of the IME evidences vector for the IMEA SD model. The internal stimuli and goals variables are those that represent the inner beliefs, desires and intentions of the member towards its involvement in the CN. Examples could be (i) Beliefs--positive impact of the CN on the external market; potential growth; (ii) Desires--profit; reputation; satisfaction/expectations met; and (iii) Intention--high participation in VOs; high collaboration interaction with peers. In this context, the variables that are proposed are based on these three aspects and are shown in Table 4.