1 Associations. 2  Associations between actors and use cases are indicated in use case diagrams by solid lines. 3  An association exists whenever an actor is involved with an interaction described by a use case.
Benefits of Volunteering. Volunteering supports the Exploratorium and promotes hands-on science, artistic expression, and educational innovation. Volunteers contribute to the community while gaining additional experience and new skills. They get to know each other at gatherings and special events and by sharing their ideas and experiences via an e-mail list.
Volunteers serve in many capacities within organizations by contributing time, energies or talents that help to fulfil the organizations' mission. Volunteers generate enthusiasm and interest and help to create a positive image of the organization in the community. Volunteers extend and augment the work of paid staff.olunteers serve in many capacities within organizations by contributing time, energies or talents that help to fulfil the organizations' mission. Volunteers generate enthusiasm and interest and help to create a positive image of the organization in the community. Volunteers extend and augment the work of paid staff.