A Study on the Spatial Characteristics of Open Land Left in the Urbanized Areas of Local Cities

1989 ◽  
Vol 24 (0) ◽  
pp. 115-120
Author(s):  
Yoritaka Tashiro ◽  
Ryouichi Sugimoto
Keyword(s):  
Spatial Characteristics ◽  
Open Land ◽  
Urbanized Areas

Temporal—Spatial Characteristics of Summer Discomfort Index in Seoul

2019 ◽  
Vol 10 (3) ◽  
pp. 173-184
Author(s):  
Hyunhee Kim ◽  
Dabin Kim ◽  
Kazuharu Mizuno ◽  
Wooseok Kong
Keyword(s):  
Spatial Characteristics ◽  
Discomfort Index

Analysis of spectral and spatial characteristics of tin laser plasma

2010 ◽  
Vol 28 (0) ◽  
pp. 129-134
Author(s):  
Л. В. Месарош ◽  
М. П. Чучман ◽  
І. Е. Качер
Keyword(s):  
Laser Plasma ◽  
Spatial Characteristics

The use of the spatial characteristics technique with the view of estimating the explosion wave impact on the stuck drilling string zone / Wykorzystanie techniki charakterystyk przestrzennych do określania wpływu fali uderzeniowej na przychwyconą kolumnę przewodów wiertniczych

2012 ◽  
Vol 57 (3) ◽  
pp. 601-618 ◽  
Author(s):  
Vasyl Moisyshyn ◽  
Vasyl Yacyshyn ◽  
Oleg Vytyaz
Keyword(s):  
Drill Pipe ◽  
Charge Weight ◽  
Practical Implementation ◽  
Problem Solution ◽  
Wave Impact ◽  
Spatial Characteristics ◽  
Explosion Wave ◽  
Deformation State ◽  
Drilling String ◽  
Threaded Joints

Abstract Studied here are the results of the asymmetric problem solution of the thick walled circular cylinder elasticity using the spatial characteristics technique. The practical implementation of the solution of the problem is based on the calculation of the stress-caused deformation state of the stuck drilling string zone affected by the explosion wave action upon the inner wall of the pipe. Suggested here is the technique for determining axual σz and circular σθ stress on the drill pipe wall as well as the radial displacements ur of the stuck drill pipe outer surface under the action of the explosion shock wave. The above technique enables to make a sound selection of the cylindrical explosive charge weight in order to avoid the residual strain during the drilling string shaping off and uncoupling the threaded joints or to prevent them from exceeding the admissible level.

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