States can decide whether to adopt the standards, but demand from students, teachers and corporate America makes Wheeler optimistic for the future of hands-on, "really unplugged" science, as Perez put it.
He said his visit was particularly important as the county faces "particular economic challenges", but he was "optimistic" for the future.
The President of the court, Vitor Manuel da Silva Caldeira said he was neither optimistic not pessimistic about future prospects for the EU's accounts, and merely "realistic".
Mr Muller-Otvos nevertheless said he was optimistic about the future as the segment for "ultra-luxurious" cars is growing in line with the rising number of "ultra-high net worth individuals".
Clearly, the market is pricing in an optimistic future for BAC.
FORBES: Large-Cap Blend Funds Need More Microsoft, Less BofA
In the four years of Mikhail Gorbachev's rule (including in recent months), there have been a number of features of Soviet foreign and defense policy that are difficult to reconcile with the optimistic Western paradigm for explaining Gorbachev's rule and future Soviet behavior.
President Obama seems to want to reshape the debate, to rewrite, as it were, the future, and set out an optimistic vision of America for his election campaign.
This may lead them to be less optimistic about the likely returns available from future investment, which bodes ill for a swift end to the slump in capital spending.
Nor, however wildly consultants draw their optimistic take-up curves, is the Internet going to be universal for the foreseeable future.
"Based on the progress achieved over the first two years, we are very optimistic about future prospects for Creative Clyde, " she said.
However, Mr Mason remained optimistic about the future, saying in a statement that the forthcoming holiday season would be great for business.
This mixed opinion makes it difficult to make any prediction for the future, but what is clear is that companies with a positive or optimistic view of the US economy will be more likely to want to drive innovation and change.
FORBES: Innovation and Growth: Which Comes First, the Chicken or the Egg?
应用推荐