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spec: The Federal-aid Highway Program provides Federal financial and technical assistance to the States to plan , construct , and improve the National Highway System , urban and rural roads , and bridges . Nonlinear cascades are illustrated below by a numerical simulation for barotropic flow on the sphere subject to random initial conditions . The growth rate in rural population in the 1990s is more than three times higher than it was in the 1980s , according to a study of Census Bureau population estimates by Calvin Beale , senior demographer at the U.S. Department of Agriculture , and Kenneth M. Johnson , a demographer with Loyola University of Chicago.The study found populations in towns have been on a rebound since 1990 , with about 1.5 million more people saying howdy to nonmetropolitan counties than those bailing out.Beale points to signs of the times : Corporate downsizing in the ' 90s is spurring more corporate refugees to flee the oppression of big-city crime , pollution and traffic . Some of the suggestions informants made for improving the ads / campaign were : a greater focus on parenting skills and bonding of parents and children ; avoidance of mixed messages ; citing alcohol as a gateway to hard drug use ; inclusion of tobacco ; inclusion of Latino and Asian role models ; fewer alcohol and tobacco advertisements in minority media ; constant repetition of ads ; ads in Asian languages ; greater use of peers in ads ; ads more " hardcore " or " real " ( graphic ) to impress " today 's youth ; " and greater responsibility taken for drug deterrence by disk jockeys that youth listen to . Helping people give away money is Donna Hall 's forte . These controls allowed the user to create a new variable and to define the contents of that variable . Important Note : Where the above regulations refer to restrictions on the use you may make of computers , these are referring to University-owned computers , and do not apply to privately-owned computers on ResNet other than as required by law . Comparison across States on their performance on the outcome measures is difficult due to variations in State population demographics , programs , and policies and must be undertaken with great care . They show us the proverbial forest when we have been paying attention to proverbial trees . The document also discusses the consequences of waiting versus investing now in these opportunities .