Development performance and key issues in Viet Nam

Author(s):  
Keyword(s):  
Viet Nam ◽  
Author(s):  
D. J. Wallis ◽  
N. D. Browning

In electron energy loss spectroscopy (EELS), the near-edge region of a core-loss edge contains information on high-order atomic correlations. These correlations give details of the 3-D atomic structure which can be elucidated using multiple-scattering (MS) theory. MS calculations use real space clusters making them ideal for use in low-symmetry systems such as defects and interfaces. When coupled with the atomic spatial resolution capabilities of the scanning transmission electron microscope (STEM), there therefore exists the ability to obtain 3-D structural information from individual atomic scale structures. For ceramic materials where the structure-property relationships are dominated by defects and interfaces, this methodology can provide unique information on key issues such as like-ion repulsion and the presence of vacancies, impurities and structural distortion.An example of the use of MS-theory is shown in fig 1, where an experimental oxygen K-edge from SrTiO3 is compared to full MS-calculations for successive shells (a shell consists of neighboring atoms, so that 1 shell includes only nearest neighbors, 2 shells includes first and second-nearest neighbors, and so on).


2008 ◽  
Author(s):  
S. Leka ◽  
T. Cox ◽  
G. Zwetsloot ◽  
A. Jain ◽  
E. Kortum

2010 ◽  
Vol 13 (3) ◽  
pp. 5-20
Author(s):  
Loc Duc Nguyen

The Vietnamese Catholic community is not only a religious community but also a traditional village with relationships based on kinship and/or sharing the same residential area, similar economic activities, and religious activities. In this essay, we are interested in examining migrating Catholic communities which were shaped and reshaped within the historical context of Viet Nam war in 1954. They were established after the migration of millions of Catholics from Northern to Southern Viet Nam immediately after Geneva Agreement in 1954. Therefore, by examining the particular structural traits of the emigration Catholic Communities we attempt to reconstruct the reproducing process of village structure based on the communities’ triple structure: kinship structure, governmental structure and religious organization.


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