(Some models may require use of a Secure Digital memory card to add or update data).
Proudly embracing a profit-making model may require focusing on the balance sheet before unleashing the social mission.
Other models may require a subscription fee for regular map updates or simply charge a set price for one map update.
The most current iPod models may require the most recent version of iTunes, so if you have an older model that works with an outdated operating system like Windows 2000 or Mac OS X 10.3, repairing the player will probably be less disruptive than upgrading your computer to get a new iPod working.
For instance, an initial model may require the choice of particular control strategies for two different service components.
Finally, tools that use very intensive data and models may require greater computing and data storage resources.
In long-term videos, the initial background model may require a constant update as long as the environmental changes happen (slowly or suddenly).
For instance, time study is the purview of industrial engineers, while estimating machining times from theoretical models may require expertise in manufacturing engineering.
However, the ICN model may require a revenue-creating business model to make it more attractive to Internet access providers than the CDN model that provides similar cost savings.
When making an acoustic finite element model of a duct system, the resulting matrices can be very large due to the length of ductwork, the complex changes in geometry and the numerous junctions, and a full model may require several thousand nodes.
