But the progress has made it difficult for statisticians to calculate backward to estimate time of infection.
"I can say that the fact of an announcement that we would get access to the Western Wall takes us backward to the time before the establishment of the Jewish state," Mr. Levy added.
Instead of moving backward to the time before there was employer-based or group health insurance, when people were on their own to get health care any way they could, we should be moving forward, recognizing that health care is a necessary public good that should be treated as a public responsibility.
But for everyone, said Dr. Robert Pynoos, the director of the trauma psychiatry program at the University of California at Los Angeles, the task can be complicated by reminders -- smells, sirens, television images, anniversaries, tall buildings, construction crews, a cry heard outside the window -- that, by stimulating memory, turn the clock backward to the time of the trauma.
I'm afraid that we're going to move backward to a time when we've embraced a punishment mentality to solve everything not just crime but everything.
I have been so inspired that these conversations have me looking forward (not backward) to a time when our values can guide us into deeper community with our neighbors and our soil.
If Mitt Romney becomes president, Republicans keep control of the House and win the few seats necessary to control the Senate, there will be nothing to restrain them from making their vision of society a reality in America -- from taking America backward to a time most of us cannot imagine.
Backward extrapolation to time zero was performed for those markers administered IV (sinistrin and PAH).
"I don't like to go backward to those times.
Specifically, a given state time distribution was extrapolated backward to a state time of 0 s using parameters determined in the fitting process described above.
