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spec: In addition to the maps , there are charts with contact , service , and contract information about Japanese ISPs . Engeman referred to republicanism as " an intellectual buzzword " that has been applied to a wide range of theories and postulates that have little in common in order to give them a certain cachet.The most important theorists in this movement are Philip Pettit and Cass Sunstein who have each written a number of works defining republicanism and how it differs from liberalism . Bergson in Creative Evolution seems to be reviving Schopenhauer 's ingenious attempt to describe a creation without any Creator . Another complication is that , because flu viruses evolve from year to year , and different strains become common at different times , vaccine producers must make calculated guesses regarding which strains will become common in order to produce an effective vaccine . Districts with high percentages of minority and low-income students may have little flexibility in teacher hiring , and may not be able to avoid hiring EP teachers .