A necessary consideration in the development or expansion of courses incorporating techniques such as geographic information systems (GIS) is the establishment of the infrastructure to support such instruction. Planning for the practical application of knowledge involves the determination of hardware, software, data and personnel needs.
Continuity: the tendency to perceive things as simply as possible with a continuous pattern rather than with a complex, broken-up pattern o Contiguity: the tendency to perceive 2 things that happen close together in time as being related Rods and cones, which one is less or more light/color sensitive?
1. the general course or prevailing tendency; drift: the trend of events. 2. style; vogue: the new trend in women's apparel. 3. the general direction followed by a road, river, coastline, or the like. 4. to have a general tendency, as events or conditions; incline. 5. to tend to take a particular direction.