Reconstructing the microstructure of real gap-graded soils in DEM: Application to internal instability

2021 ◽  
Vol 394 ◽  
pp. 504-522
Author(s):  
Mehrdad Ahmadi ◽  
Mahyar Madadi ◽  
Mahdi Disfani ◽  
Thomas Shire ◽  
Guillermo Narsilio
Keyword(s):  
Internal Instability

An Application and Research of Gray-Relation for Color Classification in Dyeing Textile

2013 ◽  
Vol 694-697 ◽  
pp. 2881-2885
Author(s):  
Hai Yan Wang ◽  
Jian Xin Zhang
Keyword(s):  
System Analysis ◽  
High Efficiency ◽  
Information Management System ◽  
Space Distribution ◽  
Color Classification ◽  
Uniform Sampling ◽  
Forecast Precision ◽  
Internal Instability ◽  
The Stability

Dyeing textile’s information management system is the basis of accurate classification of color， machine studying methods have became a popular area of research for application in color classification. Traditional classification methods have high efficiency and are very simple ， but they are dependent on the distribution of sample spaces. If the sample data properties are not independent， forecast precision will been affected badly and internal instability will appear. An application of Gray-Relation for dyeing textile color classification has been designed， which offsets the discount in mathematical statistics method for system analysis. It is applicable regardless of variant in sample size， while quantizing structure is in agreement with qualitative analysis. On the basis of theoretical analysis， Dyeing textile color classification was conducted in the conditions of random sampling、 uniform sampling and stratified sampling. The experimental results proofs that by using Gray-Relation， dyeing textile color classification does not need to be dependent on sample space distribution， and increases the stability of classification.

scholarly journals Coupled DEM-CFD Analysis of the Initiation of Internal Instability in a Gap-Graded Granular Embankment Filter

2017 ◽  
Vol 140 ◽  
pp. 10005 ◽  
Author(s):  
Kenichi Kawano ◽  
Tom Shire ◽  
Catherine O’Sullivan
Keyword(s):  
Cfd Analysis ◽  
Internal Instability

On the effect of fines content on the onset of internal instability and suffusion of sand mixtures

2021 ◽  
Vol 11 (3) ◽  
pp. 1-18
Author(s):  
J. Prasomsri ◽  
T. Shire ◽  
A. Takahashi
Keyword(s):  
Fines Content ◽  
Internal Instability

scholarly journals The Effect of Suffusion Phenomenon in the Increasing of Land Subsidence Rate

2016 ◽  
Vol 2 (7) ◽  
pp. 316-323 ◽  
Author(s):  
Elmira Khaksar Najafi ◽  
Hadi Faghihmaleki
Keyword(s):  
Land Subsidence ◽  
Alluvial Soil ◽  
Ground Surface ◽  
Seepage Flow ◽  
Internal Erosion ◽  
Alluvial Soils ◽  
Sedimentary Deposits ◽  
Subsidence Rate ◽  
Internal Instability ◽  
Ground Surface Settlement

Land subsidence is defined as gradually ground surface settlement in an aquifer due to the compaction of unconsolidated sedimentary deposits. Since in an aquifer, deposits consist of cohesive or non-cohesive alluvial soil layers. The consolidation theory cannot be explained as the only reason for land subsidence. According to the susceptibility of alluvial soils to suffusion, internal erosion is also considerable to enhance the rate of the local settlement. Suffusion is explained as a process of soil particle movement in the soil body due to the effect of seepage flow on it. The subsidence rate in southwest and south of Tehran in Iran is very considerable whereby some structures have suffered significant damages due to this phenomenon. In this research, the contribution of suffusion and land subsidence was investigated in damaged building located at Ghale Morghi Street in southwest of Tehran, as a case history. Because of the incapability of available methods, in this article, a probability pattern is also proposed using statistical analysis for determination the likelihood of internal instability in alluvial soils in regard to soil cohesiveness.

Asean and EC-1992

1990 ◽  
Vol 134 ◽  
pp. 99-109
Author(s):  
Jacques Pelkmans
Keyword(s):  
Growth Rates ◽  
High Growth ◽  
Free Trade Area ◽  
Customs Union ◽  
Intermediate Inputs ◽  
Social Growth ◽  
Trade Area ◽  
Internal Instability ◽  
Growth Constraints ◽  
Asean Countries

ASEAN, the Association of South East Asian Nations, comprises the fastest growing countries of the world economy. Apart from including the only NIE (newly industrialising economy), not having encountered domestic political or social growth constraints—Singapore, with 11 per cent real growth in 1988, 9.2 per cent in 1989 and 10 per cent, first quarter 1990—it consists of recent record holder Thailand (with growth rates above 10 per cent for three years), Malaysia (growth in the 7 per cent—9 per cent range), Indonesia (recent growth 6–7 per cent), Philippines (oscillating growth due to internal instability) and Brunei (an oil-exporting sultanate). The ASEAN countries do not owe their growth to the integration of ASEAN countries into a free trade area, a customs union or a common market. Intra-group trade liberalisation and economic cooperation are still modest. These growth marvels owe their performance to exports, especially to the OECD countries. The quality and very high growth rates of exports were and still are fostered by foreign investment and imports of intermediate inputs from the target markets.

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