The Microdynamics of Farm Structural Change in North America: The Canadian Experience and Canada‐U.S.A. Comparisons

1984 ◽  
Vol 66 (5) ◽  
pp. 823-828 ◽  
Author(s):  
Philip Ehrensaft ◽  
Pierre LaRamée ◽  
Ray D. Bollman ◽  
Frederick H. Buttel
Keyword(s):  
Structural Change ◽  
North America ◽  
Canadian Experience

scholarly journals Immigration and Structural Change: The Canadian Experience, 1971–1986

1992 ◽  
Vol 26 (4) ◽  
pp. 1200-1221 ◽  
Author(s):  
Anthony H. Richmond
Keyword(s):  
Structural Change ◽  
Empirical Evidence ◽  
Social System ◽  
Third World ◽  
Structural Changes ◽  
Theoretical Models ◽  
Composite Model ◽  
Recent Immigrants ◽  
Canadian Experience ◽  
Theoretical Perspectives

The educational, occupational, industrial and income characteristics of immigrants in Canada, 1971–1986, are considered in the context of postindustrial structural changes in the economic and social system, including declining primary and secondary sectors. Seven alternative theoretical models are reviewed. A composite model of “segmented structural change” is found to correspond more closely than alternative theoretical perspectives to the empirical evidence. Specifically, immigrants are found at all levels of the system, but there is differential incorporation by gender, ethnicity and period of immigration. Recent immigrants from Third World countries tend to be disadvantaged.

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

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