In the non-spatially dependent diffusion process the spatial proximity is not influencing the behaviour of the diffusion. The major factor is the hierarchy of each place in space, such as the population size, or the economic, cultural or political influences. Hierarchical diffusion: where the spatial diffusion occurs through an ordered sequence of classes or places like the spread of AIDS from large urban centres to small towns. Show Let us now concentrate on the spatially dependant diffusion process. We have seen that space can be modelled in different manners. If we admit that space cannot be considered as a homogeneous medium in the diffusion process, one should introduce a concept that characterises the specific influence of locations in the diffusion process. The concept of friction encompasses the overall specific properties of each location that influence the speed and the intensity of the diffusion process. In this way the spread can go through any place in space with more or less difficulties. The friction concept is expressing this level of difficulty. In the theory of the spatial diffusion process, friction is considered as a barrier to the diffusion of innovation. At each location and for each moment during the diffusion process, the permeability level of a barrier can vary. Abler, Adams and Gould (1972) identify three different effects resulting from barriers to the diffusion of innovation:
The temporal framing of spatial diffusion follows a number of rules:
The diffusion rate change throughout time is generally modelled with a logistic function (S-shaped function) as illustrated in next figure. We now know most of the concepts and elements to understand the basic principles ruling spatial diffusion models, particularly those developed for the diffusion of innovation:
In his short paper, L. Frank (2002) clearly presents the application of a spatial diffusion model to the diffusion of mobile communications within the European Union. It is an interesting and illustrative application of spatial diffusion modelling. What are two barriers to diffusion?Linguistic, religious and political factors are typical cultural barriers to diffusion. Psychological barriers can be important for innovations involving individual acceptance in the process of diffusion.
What are 2 barriers to diffusion that are often encountered even as new terms become more popular?Geographical separation or isolation may limit diffusion between innovators and receivers of new words or terms. Generation gap; older people may be more resistant to adopt new words or terms.
What is one barrier to the diffusion of English throughout China?In some cases, countries may prevent certain expressions or forms of popular culture from diffusing. For example, in China, the government censors certain parts of the internet. This could create barrier in the diffusion a expression. Another barrier that could prevent the diffusion of certain terms is age.
Which of the following types of diffusion explain how popular culture spreads?Many cultural practices are spread by a type of cultural diffusion called expansion diffusion. This is when a trend is spread from its originating place, outward. There are several forms of this type of diffusion: contagious, hierarchical, and stimulus diffusion.
|