Viet Truong Xuan

Can Tho University Software Center · Academic Department

The objective of the article is to propose a suitable management model which could be used to exploit rich and diversified data in different formats (i.e. text and spreadsheet). Besides, we also propose specific solutions based on a common Big Data platform, including: (1) HDFS (Hadoop Distributed File System) of Hadoop, which could be used in file...

Finding an optimal design for the environmental surveillance network is a realistic need for any ecosystem manager. There are two main factors related to the optimization of a surveillance network: number of sampling points (deciding the sampling density) and locations of such sampling points. This paper aims at proposing an agent-based model to ad...

This paper aims at introducing a novel general simulation model named Unit Disk Graph-based Surveillance Network Model (USNM) for an ecosystem. This model can be applied for multiple types of surveillance network, supported by two main techniques: (1)Unit Disk Graph and (2)clustering based on the correlation measures. USNM is a part of a bigger mul...

This paper aims at modeling a brown plant hopper (BPH) surveillance network, called BPH surveillance network model (BSNM). In this model, we apply the Unit Disk Graph (UDG) technique to setup a graph with multiple surveillance nodes (light traps). An agent-based model (ABM) is built to model some necessary environmental and ecological factors, in w...

Fires are serious risks that can occur in any home, especially when appliances are not used or maintained properly. Traditional fire progress in a room can be divided into four main stages: incipient, growth, fully developed, and decay. Early detection of a fire at the initial stage makes it easier to extinguish the fire and minimize damage. Smoke...

Traceability via quick response (QR) codes is regarded as a clever way to learn specifics about a product’s history, from its creation to its transit and preservation before reaching consumers. The QR code can, however, be easily copied and faked. Therefore, we suggest a novel strategy to prevent tampering with this code. The method is divided into...

A significant environmental problem in Vietnam and around the world is litter and garbage left on the street. The illegal dumping of garbage can have negative consequences on the environment and the quality of human life, as can all forms of pollution, in addition to having a large financial impact on communities. Thus, in order to reduce the impac...

Quick response (QR) code-based traceability is considered as a smart solution to know details about the origin of products, from production to transportation and preservation before reaching customers. However, the QR code is easily copied and forged. Thus, we propose a new approach to protect this code from tampering. The approach consists of two...

In recent years, with the strong and outstanding development of the Internet, the need to refer to the feedback of previous customers when shopping online is increasing. Therefore, websites are developed to allow users to share experiences, reviews, comments and feedback about the services and products of businesses and organizations. The organizat...

With the rapid development of social media platforms as well as the current pandemic, the majority of activities are performed online. The user comments obtained from the digital channels are crucial in order that the agencies or organizations can improve and develop their brand. Thus, an automatic system is necessary to analyze the sentiment of a...

This paper is aimed at introducing a new dynamic and smart campus architecture based on spatial data infrastructure and distributed ontology. This architecture helps to integrate and connect between a spatial infrastructure and multiple available IT systems implemented and operated on one or multiple university campuses. This novel architecture of...

Năng lực ra quyết định chính xác và kịp thời trong nông nghiệp ảnh hưởng trực tiếp đến mức độ thông minh của nền nông nghiệp. Đứng ở góc độ quản lý khoa học, có thể nhận thấy bài toán thu thập, quản lý, chia sẻ các nguồn dữ liệu cần thiết cho các nghiên cứu nông nghiệp đã trở nên bức thiết. Bài viết tập trung vào việc đánh giá các nguyên nhân cốt l...

This paper is aimed at introducing a new dynamic and smart campus architecture based on spatial data infrastructure and distributed ontology. This architecture helps to integrate and connect between a spatial infrastructure and multiple available IT systems implemented and operated on one or multiple university campuses. This novel architecture of...

The article objective is proposing a new model for managing large unstructured data set existed in the text files, spreadsheets form. The proposed model is based on the open source set of Big Data with service integration and link data normalization, including: (1) HDFS (Hadoop Distributed File System) used in the file management, (2) Lucene set up...

Insect invasions represent major threats for rice ecosystems. In South-East Asia, the two most critical kinds come from the white-back plant hopper (WBPH) and the brown plant hopper (BPH). In Vietnam in particular, BPHs critically damage rice yields not only through direct attacks on young rice branches but also through various indirect damages, li...

Bài viết giới thiệu mô hình mô phỏng sự phát tán của rầy nâu dưới sự tác động của côn trùng thiên địch trên đồng ruộng. Ngoài thiên địch, bài viết cũng đề cập đến sự tác động của yếu tố sinh thái và tự nhiên lên quá trình sinh trưởng, phát tán rầy. Kết quả mô phỏng của mô hình hỗ trợ tích cực việc phòng và chống rầy. Mô hình được xây dựng trên nền...

Integrated environmental modelling approaches, especially agent-based modelling ones, are increasingly used in large-scale decision support systems. A major consequence of this trend is the manipulation and generation of a huge amount of data in simulations, which require to be efficiently managed. In this paper, we present a Combination Framework...

This research aims at introducing the general model for a surveillance network and all related data models. To do it, multiple assumptions about the environment are proposed and implemented in the general model, where the observed variables are assumed as Gaussian process. We define a Correlation-based Surveillance Network Diagram (CSND) that works...

From the recent years, belong to the developing of the WEB 2.0, the WebGIS application have a great innovation not only in the applied technologies but also in the back-end applications. The stages of WebGIS can be divided into the ways to develop the different applications: in the first days, the developers must create by them-self all necessary c...

From the recent years, belong to the developing of the WEB 2.0, the WebGIS application have a great innovation not only in the applied technologies but also in the back-end applications. The stages of WebGIS can be divided into the ways to develop the different applications: in the first days, the developers must create by them-self all necessary c...

This paper is aimed at introducing a new approach to estimate the density of Brown Plant Hoppers (BPHs) at provincial scale. The model is based on the topology of a light-traps network (to gather the information about the BPHs) of a province. The BPHs density is determined based on Unit Disk Graph technique where each light-trap becomes a vertex an...

Cette recherche est menée dans le cadre de l’étude sur “la vulnérabilité des réseaux électriques vis-à-vis de l’aléa sismique” intégrée au programme de recherche ICT-ASIA “Models and Simulations for Natural Disasters”. Dans le cadre de cette recherche, on propose une méthode d’estimation des effets directs ou indirects des microséismes sur le syst...