"Study Challenges Southwest's Low-Fare Image," reported another.
Mr. Ross, a 55-year-old lawyer who has taught and worked for the United Nations and Planned Parenthood, created his institute in 1999 to study challenges to "bipartisan democratic consensus".
Now they will study challenges to the Law of Electoral Guarantees, intended to ensure that opponents are not disadvantaged.
Although microgrids are now widely studied, challenges still exist.
Last May Gongmeng published a study challenging the official verdict that blames the Dalai Lama for the 2008 riots in Tibet.
Several design features make comparisons across studies challenging.
Several features of DNA extracted from Late Pleistocene remains make its study challenging.
The United States Patent and Trademark Office does not provide unique inventor identifiers, however, making large-scale studies challenging.
In addition, the lack of standardization in host classification has made comparison with results from different studies challenging [8].
A widely accepted composite definition of timing is needed before an appropriate study challenging this major issue can be launched.
