The effects of tidal advection and mixing on the statistical dispersion of zooplankton

1981 ◽  
Vol 56 (1) ◽  
pp. 9-22 ◽  
Author(s):  
Marc Gagnon ◽  
Guy Lacroix
Keyword(s):  
Statistical Dispersion

scholarly journals International income growth and convergence and the South African economy

1998 ◽  
Vol 1 (3) ◽  
pp. 405-421
Author(s):  
L. Yadavalli
Keyword(s):  
South African ◽  
Capita Income ◽  
Economic Restructuring ◽  
Distance Measures ◽  
Per Capita Income ◽  
The South ◽  
Statistical Dispersion ◽  
Per Capita ◽  
International Convergence ◽  
Industrialised Countries

This paper considers the growth experience of the South African economy during 1970-1994, against the background of the international convergence phenomenon affirmed by Daumol (1986). Convergence refers to the idea that countries with initially low real per capita income tend to grow faster than wealthier countries, and that their per capita income levels and growth rates will eventually reach a common end-state. This empirically observed catching-up process by the developing countries is assisted by their economic restructuring. Here the growth performance of the South African economy is compared with some established and newly industrialised countries, using statistical dispersion and distance measures.

scholarly journals SUPPORT VECTOR MACHINE TO ESTIMATE VOLUME OF EUCALYPT TREES

2016 ◽  
Vol 40 (4) ◽  
pp. 689-693 ◽  
Author(s):  
Daniel Henrique Breda Binoti ◽  
Mayra Luiza Marques da Silva Binoti ◽  
Helio Garcia Leite ◽  
Alessandro Vivas Andrade ◽  
Gilciano Saraiva Nogueira ◽  
...  
Keyword(s):  
Genetic Material ◽  
Eucalyptus Grandis ◽  
Graphical Analysis ◽  
Support Vector ◽  
Planted Forests ◽  
Vector Machines ◽  
Southern Bahia ◽  
Statistical Dispersion ◽  
Predicted Values ◽  
Definition Of

ABSTRACT This study aimed to test the application of the technique of support vector machines (SVM) to estimate the volume of eucalyptus trees. The data used in this study were from of 2307 trees of clonal hybrids (Eucalyptus grandis x Eucalyptus urophylla) located in southern Bahia. In the definition of stratification traditionally used 53 stratums were defined (defined by the stratification project and clone). He set the model of Schumacher and Hall for each stratum. The SVM were constructed to correlate the volume of trees on the basis of other independent variables which may be numeric as dbh and height and categorical as genetic material and design. The estimates were analyzed using statistical and graphical analysis of residues. The analysis consisted of the graphical inspection statistical dispersion of errors (residuals) in relation to the percentage of the values observed, and the analysis of the histogram of residues. The statistics used were the correlation between the observed and estimated volumes. The model of Schumacher and Hall showed the correlation between observed and predicted values of 0,993, and the SVM set of correlated 0,994. The SVM technology showed good adaptation to the problem, and this can use to predict the volumetric production of planted forests.

scholarly journals Rationality in pier geometry of Kintaikyo Bridge from viewpoint of river engineering

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Hirokazu Sato
Keyword(s):  
Water Level ◽  
Hydraulic Model ◽  
Regular Hexagon ◽  
River Engineering ◽  
Model Experiments ◽  
Landscape Element ◽  
Water Level Rise ◽  
Engineering Characteristics ◽  
Statistical Dispersion ◽  
First Time

AbstractThe Kintaikyo Bridge, with its elegant wooden arches, has a unique pier shape and continues to be loved by residents and visitors alike. Although this bridge is an active footbridge and an important landscape element along with the Nishikigawa River and its river beach, the rationality or irrationality of the shape of its piers remains unknown. This paper is intended to clarify the river engineering characteristics of the piers for the first time by conducting 1/129 scale hydraulic model experiments. The shapes tested were a perfect spindle shape (which has been adopted as a common theory for many years) and a reconstructed current shape based on the spindle shape, and for comparison, an oval and a non-regular hexagon shape with the same width and area. The current shape, along with the spindle shape, suppressed the water level rise around the pier more than the others. As for the riverbed fluctuation, the current shape slightly increased the scour more than the others, but it also maximized the sedimentation around the scoured part. In other words, the current shape has the potential to facilitate the procurement of sediment for post-flood restoration. In addition, the current shape overwhelmingly reduced the statistical dispersion associated with the experiment, suggesting that it stabilizes the trend of riverbed fluctuation even during actual floods. Based on the results, the future conservation of the Kintaikyo Bridge was also discussed.

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