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Then they would place a grid on the net and count the small squares , noting that the finer the grid the more accurate the estimate of the area . We called for an exchange of views in APEC on regional and bilateral trade agreements , noting that these agreements need to be consistent with WTO rules and disciplines and APEC 's goals and principles . Alexander Bedritzky , Chief of Hydrometeorology and Environment , the Russian Federation , said Parties face many challenges , including how to effectively measure the implementation of quantitative reductions of greenhouse gas emissions , noting that a five-year period is too short to monitor emissions trends . We hope this document will be used as a step in evaluating proposed congestion control mechanisms for a wide range of metrics , noting that Mechanism X is good at optimizing Metric A , but pays the price with poor performance for Metric B. Meanwhile , it 's a good idea to track your periods , noting changes if they occur , particularly around the time of beginning a new anti-HIV drug .