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We show that for any w > 0 a simple greedy algorithm is ( 2 + 1 / w ) - competitive , and we give lower bounds showing that this is the best possible result for a deterministic algorithm , even when all jobs have one of three distinct lengths . Researchers may choose to address an urban issue ( s ) using a geographic approach of space ; by time , using longitudinal data and / or rates of change ; or by characterization of diversity , capturing social / cultural / natural / service characteristics . The Institute is not a regulatory body but it is available to advise on the normal process of grant applications by individuals . Public Citizen , a non-profit group founded by Ralph Nader , and several scholarly groups sued the U.S. Archivist , John W. Carlin , in December 1996 , charging that the rules gave agencies the freedom to destroy records without any assessment by the Archives of their historical value . We describe a consensus-type algorithm for determining all the maximal complete bipartite ( not necessarily induced ) subgraphs of a graph .