River bank stability is very sensitive to the variation of the water level (WL) of the river. This is the case along the Lower Mekong River which WL change between dry and wet seasons is about 10m. This paper presents a study of river bank stability subjected to variations of the water level. Dupuit assumption is supposed to find the variation of WL in the soil using a numerical solution by an explicit finite difference method. The mass sliding S

Spatial distribution of soil data is a current issue with which most of areas are being faced. Imba-Numa watershed, Japan, is also one among those areas which lack of spatial data of soil parameters. This study aims to generate spatially distribution of soil properties which consist of soil particles, total carbon, total nitrogen and Bulk density in Imba-Numa watershed. Three geostatistical interpolation methods: Ordinary Kriging (OK), Universal

La Khmer Brewery Limited (KBL) produit 5 tonnes des résidus de levures par jour qui pourront être très polluants pour environnement. Le but de ce travail est de valoriser des résidus de levures en les transformant en biogaz par la méthode de fermentation anaérobie continu sous forme liquide à température en mésophile, une comparaison a été faite entre le rendement du biogaz produit de processus de fermentation à partir les résidus de levures en p

Localization of the plate region is one of the critical tasks in the automatic vehicle license plate recognition (AVLPR) system. In this work, the algorithm for Cambodian license plate localization based on the mid-gray image removal combined with the connected component analysis (CCA) is proposed. We test our proposed technique with 70 images which are captured from some distances and viewpoints. As the result of the simulation, it shows the suc

A Cambodian clay deposit was used for the development of tile formulations using the statistical design of mixture experiments. Besides the clays, commercial feldspar and silica sand (quartz) were also used to prepare ten different tile formulations. The specimens were fabricated by pressing (30 MPa) and then fired at 1170 oC. T e sintered specimens were characterized for their linear firing shrinkage, water absorption and modulus of rupture. Reg

In the last time the driven pile and bored pile foundation are widely used in Cambodia. And for calculation the bearing capacity of bored pile foundation we have a lot of equations to resolve it by using soil parameters from laboratory test and in-situ test such as static cone penetration test, dynamic cone penetration test, pressiometer test and standard penetration SPT.The problem for us is the inability to take undisturbed sample like the sand

This paper presents about our research in social search. Generally, the research in social search falls into two principal challenges. The first challenge is how to find more relevant answers to the question. The second one is how to increase speed in finding relevant answers. Recently, we had provided an algorithm called Question Waves (QW) to find more relevant answers compared to the baseline algorithmbreadth-first search(BFS). But, the search

The recognition phase of an Optical Character Recognition (OCR) system produces a ranked list of candidate characters, among which the top one is usally taken as recognition result without taking context into account. Recognition error occurs if the correct character is not at the top, which is mostly due to shape similarity between characters.In this paper we propose to use character trigram, which means that two previous characters are taken in

Strongly coupled fluid-structure interaction (FSI) between diluted slurry of water and CaCO3 particles and a polycarbonate tube was studied numerically. A steel piston was impacted on top of the slurry, causing the generation and propagation of flexural waves in the tube wall and pressure waves in the slurry. Considering homogeneous mixtures as slurry and using the Arbitrary Lagrangian-Eulerian method, FSI cases with different volume fractions of

In this paper, the relationship between vibration and fatigue life of metal has been investigated. To perform the research, finite element method is used to design two types of steel specimen before the experiment under bending load is conducted on an electro dynamic shaker. In the experiment, the tested frequenciesare around the first natural frequency of the specimens and they are carried out at the frequency ratios r = f/fn (f = excitation fre