"Security measures have evolved in the years since the secondary barriers were ordered, and many more layers of security now exist on each of our aircraft," said Christen David, the spokeswoman.
For example, United told the Chicago Tribune in 2013 that "security measures have evolved in the years since the secondary barriers were ordered, and many more layers of security now exist".
Both SHMI and the QUORUM measures have evolved the development of mortality measures by measuring outcomes within a hospital and within the community.
Such process of care measures have evolved to include nine measures related to myocardial infarction care, four measures related to heart failure care, six measures related to pneumonia care, and 11 measures related to prevention of surgical infection.
This approach to validating international measures, which has evolved from the guidelines on the topic, should also be useful for other international survey research.
The approach used to validate this international measure, which has evolved from current guidelines, should be useful to other researchers carrying out international surveys.
Thermometry, which refers to the use of objective means to measure temperature, has evolved over the years from the use of 'touch' to invasive methods of temperature detection, such as pulmonary artery and urinary bladder measurements.
This 'Systems Level Measure Framework' (SLMF) has evolved from the Integrated Performance and Incentive Framework (IPIF) previously reported in this journal.
The methods of measuring road surface undulations has evolved over the last century [2].
When the Raiders traded Moss to New England this spring, it was a measure of how the N.F.L. has evolved that the wonkish and corporate Patriots, rather than the Raiders, were thought to provide a nurturing environment in which a provocateur like Moss could flourish.
