By reducing travel and freight expenses, and improving efficiency, broadband will also reduce carbon emissions, according to a 2007 study, by 5%.

据2007年一项研究，通过减少旅行和运输，并提高效率，宽带也会降低5%的碳排放。

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The first study adopts a simulation approach to obtain the optimal design of freight consolidation and truck dispatch plan under specific market conditions.

第一部分的研究采用模拟的方法，得到了货物集运的最优设计计划以及在特定的市场条件下的车辆发货安排。

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In this study, we develop collaborative freight consolidation models, where collaborative partnerships are embodied in price competition and freight consolidation operations.

在该研究中，我们构建了一系列合作的货物集运模型，在价格竞争与货物集运中考虑了合作的伙伴关系。

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Last month, the STB commissioned a study of competition in the freight rail industry by a third-party research firm, Wisconsin-based Christensen Associates.

FORBES: All Aboard

There is no single study that compares jet fuel use for passenger flights versus air freight shipping.

FORBES: How Much Energy Do Individuals Actually Use?