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Australia's annual rate of productivity growth surged by over 1 percentage point in the 1990s. Three major possible explanations have been put forward: the use of more advanced information and communications technologies (ICTs), increases in workforce skills, and policy reforms designed in large part to drive and enable productivity improvement. The paper… (More)
Gas phase and particular phase sulfur have been measured at various locations in the Los Angeles basin to determine atmospheric conversion rates and mechanisms. A new technique was developed for the measurement of particulate sulfur. From measurements of the particulate to gas phase sulfur ratio near the major stationary sources and far downstream and from… (More)
We interpret the Artin–Rees lemma and the Izumi theorem in term of Artin function and we obtain a stable version of the Artin–Rees lemma. We present different applications of these interpretations. First we show that the Artin function of X 1 X 2 − X 3 X 4 , as a polynomial in the ring of power series in more than three variables, is not bounded by an… (More)
This paper discusses the problem of whether it is possible to annihilate elements of local cohomology modules by elements of arbitrarily small order under a fixed valuation. We first discuss the general problem and its relationship to the Direct Summand Conjecture, and next present two concrete examples where annihilators with small order are shown to… (More)
We gratefully acknowledge the administrative and technical support provide by Dr. Douglas Lawson of NREL and Mr. Brent Bailey of the CRC. We thank the staff of the California Air Resources Board and the CRC for comments on the draft report.
(STI) conducted a study of the causes of elevated ozone levels on weekends in the South Coast (Los Angeles) Air Basin (SoCAB). This work was conducted over a period of 30 months beginning in December 1999. In the initial phase of the study, DRI examined the spatial, temporal, and statistical distributions of ozone, carbon monoxide, total non-methane… (More)