Pre-planned contrasts will examine the nature of change over time, including the timing and longevity of intervention effects.
Mr. Zhu added that details, including the timing and mode of return, were still under discussion.
The referendum spurred much debate, including the timing of the election itself.
Details including the timing of the $2 million stock award still need to be worked out, a G.M. spokeswoman said.
Thursday was also when Iraqis were supposed to vote on the Iraqi-American security agreement, including the timing of the departure of United States troops.
"There are many different variations around timing that we can work through with London Underground, including the timing of the fleet and the upgrade.
Other details, including the timing of the start of such sales, have not been set yet, said a spokesman at the unit, Hewlett-Packard Japan Ltd.
And it recommended that the industry look at standard well-control practices, including the timing of closing and opening the various parts of the preventers.
The initiative, which has circulated in various drafts, leaves many details unsettled, including the timing of the vote and the mechanics of military control during any transition.
Details, including the timing and how much the Sony Communication Network Corporation might pay, will be decided by the end of February, said Sony, one of the world's largest makers of consumer electronics.
Mr. Olson added that courts might take account of several factors in making the determination, including the timing of the contribution, its size and the proportion of total spending it represented.
