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.
Cross-training offers a wide variety of benefits for small businesses. For example, a well-designed program can help reduce costs, improve employee morale, reduce turnover, and increase productivity. It can also give a company greater scheduling flexibility, and may even lead to operational improvements.