6Schmidt R 0. Multiple emitter location and signal parameterestimation[J]. IEEE Transactions on Antennas andPropagation, 1986, 34(3): 276-280.
7Roy R and Kailath T. ESPRIT-estimation of signalparameters via rotational invariance techniques [J]. IEEETransactions on Acoustics, Speech, Signal Processing 1989,37(7): 984-995.
8Alcala B E and Recio F R. Performance analysis ofmetaheuristic approaches for single-snapshot DO Aestimation[J]. IEEE Antennas and Wireless PropagationLetters,2013, 12(1): 166-169.
9Errasti-Alcala B and Fernandez-Recio R. On the use ofparticle swarm optimization for single snapshot DOA andfrequency estimation[C]. Proceedings of 2013 6th EuropeanConference on Antennas and Propagation, Prague, 2012:3635-3639.
10Zaman F, Khan J A, Khan Z U, et al.. An application ofhybrid computing to estimate jointly the amplitude anddirection of arrival with single snapshot [C]. Proceedings of2013 10th International Bhurban Conference on AppliedSciences & Technology, Islamabad, Pakistan, 2013: 364-368.
4Ginter PM,Swayne L.Strategic management of health care organizations.MA:Blackwell Business,1998.168.
5Janet A Weiss,Sandy Kristin Piderit.The value of mission statements in public Agencies.Journal of Public Administration Research and Theory,1999,9:193-223.
6Lindeke LL,Chesney ML.Reimbursement realities of advance nursing practice.Nursing Outlook,1999,47:248-251.
7Chery L Mee.Nursing on a mission.Nursing,2003,33(3):2.
8Keith A Joiner,Steven Wormsley.Strategies for defining financial benchmarks for the research mission in academic health centers.Academic Medicine,2005,80:211-217.
9Ray M Lewkonia.The missions of medical schools:the pursuit of health in the service of society.BMC Medical Education,2001,10:1186.
10Christopher Kenneth Bart.The relationship between mission state ment and firm performance:an exploratory study.Journal of Management Syudies,1998,35:823-853.