The Effect of Driving Restrictions on Air Quality in Mexico City pdf

... del 12 of emissions, is small in Mexico City. There is virtually no electricity production within Mexico City and electricity production in the su rrounding state of Mexico increased by only 1.5% ... central r ole in determining air quality in Mexico City. It is unlikely that the lack of evidence of an improvement in air quality can be explained by an...

Ngày tải lên: 29/03/2014, 14:20

... of this decline is explained by the drop in the intensive margin. The rest is explained by the increase in the number of firms abandoning product-destination export markets. The elasticity estimates ... elasticity of the intensive margin is 0.25 in this case. The continuation margin is elastic to credit, the point estimate of the elasticity is larger than in...

Ngày tải lên: 16/02/2014, 03:20

... ability of markets and institutions to adjust to increased population. Much of the intellectual heft of the report is directed at the question of whether interventions in fertility decisions of households ... simulations is in the parameterization of the underlying economic relations. In comparison to previous studies, we go much further in grounding our paramete...

Ngày tải lên: 31/03/2014, 05:21

... backoffs. One of its vari- ants computes the estimate in question as the average of three b ackoffs. In addition to the maximum used here, testing other combina- tion strategies for the MI values in the ... that the combined sys- tem only improves the performance of the parser f or small training sets. Sur- prisingly, the size of the unannotated corpus has litt...

Ngày tải lên: 20/02/2014, 12:20

Ngày tải lên: 13/02/2014, 12:20

... observed. These data support the finding that the polluted air is often transported out of the Mexico City air basin and carried aloft into the regional air masses downwind of the city. b NO y includes ... C.D.; Zhong, S.; Bian, X. The Break -in of the Basin-Plain Circulation in the Mexico Basin, presented at the 1998 spring meeting of the Amer...

Ngày tải lên: 17/02/2014, 22:20

... additional variation is not supported by the same pattern in the credible intervals for the constant effects, a point which is taken up in the discussion. However, the width of the four intervals in ... remainder of this subsection describes the model building process, including justifications for the choice of models. The first part focuses on the trend models,...

Ngày tải lên: 17/02/2014, 10:20

Ngày tải lên: 23/09/2012, 14:47

... in the Commonwealth 1 1.2 Air Quality Policies in the Commonwealth 1 1.3 Summary of Annual Air Division Activities 1 2 Status of Air Quality in the Commonwealth of Virginia 2 2.1 Monitoring ... than the levels measured in the current network. VDEQ is working towards modifying the existing monitoring network to meet the requirements of the NO...

Ngày tải lên: 29/03/2014, 14:20

... dividing advancing issues by declining issues and advancing volume by declining volume. The first result is then divided by the latter and the result is the TRIN. If the index is above one, the ... calls advancing by the number of calls declining • Divide the number of puts declining by the number of puts advancing • Subtract the result of calls adv./decl. from...

Ngày tải lên: 17/01/2014, 03:20