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.
Volunteering and its Surprising Benefits How Giving to Others Makes You Healthier and Happier. With busy lives, it can be hard to find time to volunteer. However, the benefits of volunteering are enormous to you, your family, and your community. The right match can help you to reduce stress, find friends, reach out to the community, learn new skills, and even advance your career.