" These five are: Ownership of the medium Medium's funding sources Sourcing Flak Anti-communist ideology The first three (ownership, funding, and sourcing) are generally regarded as being the most important. Although the model was based mainly on the characterization of United States media, Chomsky and Herman believe the theory is equally applicable to any country that shares the basic economic structure and organizing principles which the model postulates as the cause of media biases . The filters Ownership Herman and Chomsky argue that since all mainstream media outlets are embodied in large corporations, which are themselves often part of much larger conglomerates (e. g. Westinghouse or General Electric). Such conglomerates frequently extend beyond traditional media fields, and thus have extensive financial interests that may be endangered when certain information is widely publicized. Thus, according to this reasoning, news items that most endanger the corporate financial interests that own the media will face the most bias and censorship. Model Sail Boat Kit The authors claim that the importance of ownership filter is the fact that corporations are subject to shareholder control in the context of a profit-oriented market economy. The theory then argues that maximizing profit means sacrificing news objectivity, and news sources that ultimately survive must be fundamentally biased, with regard to news in which they have a conflict of interest. "

" The distinction between descriptive and prescriptive reference mode goes at least back to Wieringa, [2]. More detail and references regarding models and modeling can be found, e. g. , in [3]. II. The consistency of models may be conceptual or physical. In many areas of research conceptual models have become the dominating species, as conceptual models, more easily than physical ones, can be investigated by means of computing. Wooden Sail Boat Model For conceptual models to be the shared property of a research community the concepts they involve must be capable of being shared. That is the case when a consensual understanding of these concepts has been achieved or can be achieved by means of definition, examples, etc. "