Institute of Technology of Cambodia
Phnom Penh, Cambodia

Institut de Technologie du Cambodge , also known as Techno , is the only institution in Cambodia whose mission is to form superior and middle managers whom private companies need. It is so in narrow relation with the industrial world directly involved in the regional context. It benefited from a frame of action which allowed ITC to start without time losing. The ITC was founded in 1964. The first objective is to prepare executives arranging qualities allowing the students to face the labour market in Cambodia and in the region. The quality of the scientific and technical educations, the practice of foreign languages predispose them to a regional brilliance.ITC elaborated new educational programs in accordance with the socio-economic reality of the country and the region. On this subject, the qualitative analysis of the employment market in Cambodia which is in full reconstruction, and in the most active region of the globe puts the following sectors in first priority : Public works and Building Prospection, production and energy distribution Transformation of agricultural products and food technology Drinking water and sanitation Industrial maintenance Telecommunications Automatic systems Agricultural hydrology and irrigation Electronics Information Technology Wikipedia.

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Kruy S.,Institute of Technology of Cambodia | Aoyama H.,Keio University
International Symposium on Flexible Automation, ISFA 2016 | Year: 2016

A new model to predict burr formation due to tool wear of a cutting tool in end-milling is proposed. The model shows that the burr sizes vary according to flank wear of a cutting tool. A system was developed to simulate burr to be formed at each edge point on machined surfaces based on flank wear of a cutting tool and cutting conditions by using the proposed model. In addition, the experimental works of steel with a 0.45% carbon and aluminum alloy AlMg0.5Si with solid carbide tools was executed to investigate the relationship between burr size and tool flank wear, and comparison between experimental results and predicted results was discussed. The comparison results showed that the proposed model could help to predict burr size under the effect of tool flank wear with high accuracy. © 2016 IEEE.

Valy D.,Catholic University of Louvain | Valy D.,Institute of Technology of Cambodia | Verleysen M.,Catholic University of Louvain | Sok K.,Institute of Technology of Cambodia
Proceedings of International Conference on Frontiers in Handwriting Recognition, ICFHR | Year: 2017

Line segmentation is very crucial in handwritten text recognition/analysis task. A new text line extraction scheme based on a data clustering algorithm is proposed. Our approach starts by determining the number of lines and setting up text line mid points' initial positions using a modified piece-wise projection profile technique. We apply afterwards competitive learning algorithm to adaptively move those mid points according to the geometrical information of connected components in the document page to form lines. Borders between text lines are defined so that they can be used to separate touching components that spread over multiple lines. The proposed method is robust in handling documents with skewed, fluctuated, or discontinued text lines. Experimental evaluations were made on a data set of Khmer ancient palm leaf manuscripts. © 2016 IEEE.

Vuthchhay E.,Institute of Technology of Cambodia | Bunlaksananusorn C.,King Mongkut's University of Technology Thonburi
2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010 | Year: 2010

A Zeta converter is a fourth-order DC-DC converter made up of two inductors and two capacitors and capable of operating in either step-up or step-down mode. Compared with other converters in the same class, such as Cuk and SEPIC converters, the Zeta converter has received the least attention, and more importantly, its dynamic modeling and control have never been reported before in the literature. This paper presents dynamic modeling and control of a Zeta converter operating in Continuous Conduction Mode (CCM). The State-Space Averaging (SSA) technique is applied to find small-signal linear dynamic model of the converter and its various transfer functions. Based on the derived control-to-output transfer function, the PWM feedback controller is designed to regulate the output voltage. Results show that the converter exhibits good performance in steady state and during a step-load change. © 2010 IEEE.

Sarkar S.,Lehigh University | Greenleaf J.E.,Lehigh University | Gupta A.,Bengal Engineering and Science University | Uy D.,Institute of Technology of Cambodia | Sengupta A.K.,Lehigh University
Annual Review of Chemical and Biomolecular Engineering | Year: 2012

Millions of people around the world are currently living under the threat of developing serious health problems owing to ingestion of dangerous concentrations of arsenic through their drinking water. In many places, treatment of arsenic-contaminated water is an urgent necessity owing to a lack of safe alternative sources. Sustainable production of arsenic-safe water from an arsenic-contaminated raw water source is currently a challenge. Despite the successful development in the laboratory of technologies for arsenic remediation, few have been successful in the field. A sustainable arsenic-remediation technology should be robust, composed of local resources, and user-friendly as well as must attach special consideration to the social, economic, cultural, traditional, and environmental aspects of the target community. One such technology is in operation on the Indian subcontinent. Wide-scale replication of this technology with adequate improvisation can solve the arsenic crisis prevalent in the developing world. Copyright © 2012 by Annual Reviews. All rights reserved.

German M.,Lehigh University | Seingheng H.,Institute of Technology of Cambodia | SenGupta A.K.,Lehigh University
Science of the Total Environment | Year: 2014

In trying to address the public health crisis from the lack of potable water, millions of tube wells have been installed across the world. From these tube wells, natural groundwater contamination from arsenic regularly puts at risk the health of over 100. million people in South and Southeast Asia. Although there have been many research projects, awards and publications, appropriate treatment technology has not been matched to ground level realities and water solutions have not scaled to reach millions of people. For thousands of people from Nepal to India to Cambodia, hybrid anion exchange (HAIX) resins have provided arsenic-safe water for up to nine years. Synthesis of HAIX resins has been commercialized and they are now available globally. Robust, reusable and arsenic-selective, HAIX has been in operation in rural communities over numerous cycles of exhaustion-regeneration. All necessary testing and system maintenance is organized by community-level water staff. Removed arsenic is safely stored in a scientifically and environmentally appropriate manner to prevent future hazards to animals or people. Recent installations have shown the profitability of HAIX-based arsenic treatment, with capital payback periods of only two years in ideal locations. With an appropriate implementation model, HAIX-based treatment can rapidly scale and provide arsenic-safe water to at-risk populations. © 2013 Elsevier B.V.

Han V.,Institute of Technology of Cambodia | Ros S.,Kochi University of Technology | Shima H.,Kochi University of Technology
ACI Materials Journal | Year: 2013

This study investigated the effects of unit sand volume, mixing time (MT) duration, and superplasticizer (SP) dosage on mortar compressive strength. The experiments were conducted on many mortar mixtures made of different water-cement ratios (w/c), sand contents, MTs, and different limestone powder replacement ratios. Consequently, the experimental results suggested that a critical unit sand volume that caused a change of mortar compressive strength existed. When the unit sand volume in mortar exceeded the critical unit sand volume, the strength of the mortar increased and decreased in the case of the SP dosage of 0.3% or 0.6% and 0.8%, respectively. Moreover, it was identified that the critical unit sand volume was found to be 0.38 and 0.52 for a w/c of 0.3 and 0.6, respectively. Meanwhile, regardless of w/c, the optimum duration of MT was 3 minutes. The optimum SP dosage required for high cement dispersion leading to high compressive strength of mortar was found to be 1.0% and 1.18% for mortar with and without limestone powder, respectively. Copyright © 2013, American Concrete Institute. All rights reserved.

Tan R.,Tokyo Institute of Technology | Tan R.,Institute of Technology of Cambodia | Miyanaga K.,Tokyo Institute of Technology | Uy D.,Institute of Technology of Cambodia | Tanji Y.,Tokyo Institute of Technology
Bioresource Technology | Year: 2012

This study investigated the effect of heat-alkaline treatment (HAT) at pH 11 and 60. °C on volatile fatty acid (VFA) production and protein degradation in excess sludge, soluble and insoluble proteins, and pure cultures. In addition, quantification of bacteria present in the sludge was also examined. Experimental results showed that following acid fermentation under pH 7 and 37. °C, HAT enhanced VFA production in excess sludge, albumin, and Gram-negative bacteria, but not in casein or Gram-positive bacteria. Protein solubility was therefore found not to be the main criteria for VFA production. In the protein analysis, it was shown that the outer membrane protein (OmpC) of Escherichia coli K12 was resistant to chemical and enzymatic hydrolysis. Gram staining revealed that Gram-negative bacteria were predominant in the activated sludge used in this study. In addition, the bacteria present in the activated sludge comprised only 10% of mixed liquor suspended solids (MLSS) by quantitative PCR. © 2012 Elsevier Ltd.

Watershed management and hydrological modeling require data related to the very important matter of precipitation, often measured using rain gauges or weather stations. Hydrological models often require a preliminary spatial interpolation as part of the modeling process. The success of spatial interpolation varies according to the type of model chosen, its mode of geographical management and the resolution used. The quality of a result is determined by the quality of the continuous spatial rainfall, which ensues from the interpolation method used. The objective of this article is to review the existing methods for interpolation of rainfall data that are usually required in hydrological modeling. We review the basis for the application of certain common methods and geostatistical approaches used in interpolation of rainfall. Previous studies have highlighted the need for new research to investigate ways of improving the quality of rainfall data and ultimately, the quality of hydrological modeling.

Tan R.,Tokyo Institute of Technology | Tan R.,Institute of Technology of Cambodia | Miyanaga K.,Tokyo Institute of Technology | Toyama K.,Tokyo Institute of Technology | And 2 more authors.
Biochemical Engineering Journal | Year: 2010

This study examined the effects of combining heat-alkaline treatment (HAT) with an acclimation process on sludge reduction. Changes in sludge components and microbial communities in both the mixed liquor suspended solids (MLSS) and supernatant fractions were monitored throughout the process. HAT was performed under different pH conditions (pH 7, pH 11 and pH 13) at 60 °C. Approximately 42-62% of the released materials were proteins. After an 8-day acclimation of sludge, the protein concentration in the supernatant had significantly decreased under all conditions. Treatment conditions at pH 11 were optimal for sludge reduction due to the increased efficiency and reduced consumption of chemicals to adjust the pH. A molecular analysis showed that the microbial consortia in both fractions after the cell lysis differed depending on the pH and temperature, and only a few types of bacteria were resistant under extreme conditions. The microbial communities in the MLSS under different conditions were similar after the 8-day acclimation. © 2010 Elsevier B.V.

Chandara C.,Tokyo Institute of Technology | Chandara C.,Universiti Sains Malaysia | Chandara C.,Institute of Technology of Cambodia | Sakai E.,Tokyo Institute of Technology | And 3 more authors.
Construction and Building Materials | Year: 2010

The aim of this study was to clarify the influence of unburned carbon in palm oil fuel ash (POFA) on the fluidities of cement pastes containing a polycarboxylate-based superplasticizer (SP). The POFA was ground in a ball mill to produce ground POFA (GPOFA). Unburned carbon, which was the major part of unburned residue in GPOFA, was removed by heating at 500 °C for 1 h, producing treated POFA (TPOFA). Neither glassy phase crystallization nor agglomeration of GPOFA particles occurred during the heat treatment. Cement pastes containing GPOFA and TPOFA had lower fluidities than that of ordinary Portland cement (OPC) paste. Cement pastes containing TPOFA had higher fluidities than cement pastes containing GPOFA. Unburned carbon absorbed more SP than did the other particles in the cement pastes because of the carbon's large specific surface area. Because of their irregular shape and porosity, GPOFA particles absorbed more SP than did OPC particles. Therefore, the higher the content of unburned carbon and GPOFA particles in the cement paste, the greater the quantity of SP needed to be added. © 2010 Elsevier Ltd. All rights reserved.

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