Warodom Werapun | Prince of Songkla University (original) (raw)
Papers by Warodom Werapun
2022 6th International Conference on Information Technology (InCIT), 2022
Smart contracts publicly deployed on blockchain have been shown to contain several vulnerabilitie... more Smart contracts publicly deployed on blockchain have been shown to contain several vulnerabilities that users can maliciously exploit. To detect smart contract vulnerabilities as categorized in the Smart Contract Weakness Classification (SWC) standard, we propose the SWC-based Analysis Tool (SWAT). It operates by matching patterns in Solidity codes, making it easy to use and allowing any Solidity developers to conveniently check their smart contracts before deploying. We conducted experiments to compare the proposed solution against state-of-the-art tools in identifying 46 SWC registries. SWAT outperformed the existing tools in terms of the number of SWC vulnerabilities supported. Moreover, our solution is memory-efficient as it uses 44.58% less memory than other tools.
Informatics
Decentralized finance (DeFi) has exploded in popularity with a billion-dollar market cap. While u... more Decentralized finance (DeFi) has exploded in popularity with a billion-dollar market cap. While uncollateralized lending, known as a flash loan, emerged from DeFi, it has become a primary tool used by attackers to drain investment tokens from DeFi networks. The existing countermeasures seem practical, but no comprehensive quantitative analysis framework was available to test them. This paper proposes the Flash loan Attack Analysis (FAA) framework, which aids security practitioners in understanding the DeFi system’s effects on preventative methods when various factors change. The quantitative predictions can help security professionals in identifying hidden dangers and more efficiently adopting countermeasure strategies. The simulation predicts that the existing strategy, fair reserves, can fully protect the platform in a typical market environment; however, in a highly volatile market where the token price drops by 60% in a single hour, it will be broken, causing more than $8 millio...
The ongoing growth of connectivity has brought new opportunities for Home Network; Home network w... more The ongoing growth of connectivity has brought new opportunities for Home Network; Home network will soon be a place of a large amount of services, from the gadget to the home control. In order to provide and render these services, operator should propose a framework for supporting the deployment of new services. This paper focuses on home services, proposing an overview of potential service architectures. Then a photo sharing services validates through implementation the concepts of Home Services and an analysis of architecture complexity is proposed to conclude this work.
The challenge of mobility in IP layer allows hosts to retain their addresses without requiring ro... more The challenge of mobility in IP layer allows hosts to retain their addresses without requiring routers to propagate specific routes or breaking current connections [1, 2]. Mobile IPv6 makes transparency of IP layer. In particular, as long as they remain idle, all open TCP connections survive a change in network and are ready for further use [1, 2, 8]. This paper proposes an experiment of mobile IPv6 for Linux testbed system, and we have analyzed some testbed results. This testbed uses Mobile IPv6 implementation on Linux.
Peer-to-Peer Networking and Applications, 2021
Fake reviews are a major problem in online consumer feedback systems that not only mislead people... more Fake reviews are a major problem in online consumer feedback systems that not only mislead people due to incorrect information but also damage the overall credibility of online businesses. Popular online review platforms have tried to overcome this problem through various strategies. However, most attempts end with vulnerabilities and untraceable results. We demonstrate how centralized online review systems are vulnerable to attacks. The blockchain-based online review system, which incorporates a token curated registry (TCR), is proposed in this work. Mathematical models are defined to analyze the capability to handle problems of centralized systems and the proposed framework. Additionally, we construct scenarios to demonstrate empirical results on fake review spam prevention. Our framework can discourage fraudsters by requiring costs and exposing their actions. Moreover, the system relies on the majority of users rather than a central authority. Furthermore, the proposed framework ...
2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2020
Today, the online review system cannot fully support the business since there are fraudulent acti... more Today, the online review system cannot fully support the business since there are fraudulent activities inside. The companies that get low score reviews are induced to raise their score for the market competition capability by paying to the platform for deleting or editing the posted reviews. Moreover, the automatic filtration system of a platform removes some reviews without the awareness of the users. The low transparency platform causes low credibility toward the reviews. Blockchain technology provides exceptionally high transparency since every action can be traced publicly. However, there are some tradeoffs that need to be considered, such as cost and response time. This work tends to find the potential of using Blockchain technology in the online review system by testing four implementation approaches of the Ethereum Smart Contract. The result illustrates that using IPFS to store the data is a practical way of reducing transaction costs. Besides, preventing using Smart Contrac...
In present days, home devices with network capabilities are widely used and augmented for deliver... more In present days, home devices with network capabilities are widely used and augmented for delivering several Home Services (HS) to more end users. The technology integration offers new and exciting opportunities to increase the device connectivity within a home for many proposals of home automation. This paper is designed and implemented for a cost effective, flexible, manageable home automation system. The proposed system consists of three main components: a device control using a microcontroller (e.g., Raspberry PI with control circuit), a notification system (Social network integration) and a user control from anywhere, any time and any device. This system can support a wide range of home appliances connecting through the network as the Internet of Things (IoT) concept. A user is able to easily control home automation system by several ubiquitous devices. Air conditioners and fans are sample devices to be controlled by our system in order to demonstrate the simplicity and effecti...
2019 23rd International Computer Science and Engineering Conference (ICSEC), 2019
This research aims to present the drinking water transportation framework which uses a mobile app... more This research aims to present the drinking water transportation framework which uses a mobile application to calculate the minimum distance of the transportation to reduce consuming resources and improve routing decision time. The Android application is developed to be able to display positions, traveling routes, approximate total distance and total duration spending for drinking water transportation. This framework provides 2 methods to calculate transportation routes 1) a fast calculating method using Nearest Neighbor algorithm and 2) an exact calculating method using Dynamic Programming algorithm. This research shows the result of testing and comparing processing times between these 2 algorithms to select the most appropriate choice for actual use. The results are illustrated that Dynamic programming always gives the best distance result. However, it spends much time to calculate. Eventually, the experimental results are described that searching the shortest route for 16 places t...
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2016
The Prince of Songkla University (PSU) is the top five universities of Thailand that still uses t... more The Prince of Songkla University (PSU) is the top five universities of Thailand that still uses traditional networking. Presently, there are Internet applications that are able to provide dynamic, manageable, and adaptable features such as Software-defined Networking (SDN). SDN is a recent concept of programmable networks that divides the control plane and data plane of all network devices. It can be programmed via an open interface which is interesting to implement SDN because of their various benefits such as centralized network provisioning, lower operating costs etc. In this paper, we propose comparison between traditional PSU network which is defined Static routing (Static routing non-SDN) and SDN which are using programmable algorithm such as Bellman-Ford SDN (BFSDN) unicast, Dijkstra SDN (DSDN) on both unicast and multicast in order to determine worthiness of migration from traditional network to SDN. In part of topology emulator, we have replicated topology by Mininet. Its p...
International Journal of Computer Science & Applications, 2013
Nowadays, home networks have integrated day to day life through the classical internet access and... more Nowadays, home networks have integrated day to day life through the classical internet access and deliver numerous services to end users. This home entrance is a real opportunity for operators to deploy services directly between homes. However, one major issue is the interconnection between Home Networks (HN) which requires suitable architectures and efficient authentication mechanisms. In this paper, two network architectures were proposed to interconnect HNs in order to support home service delivery and then compared with the IMS as reference architecture. The first architecture was based on a centralized SIP solution and used HTTP digest for authentication purpose; while the second proposition consisted in a distributed architecture based on pure P2P and Identity based cryptography. The study of these two solutions has been undergone through the simulation of a simple photo sharing scenario. As a result, the centralized SIP solution can be relevant for an average number of users ...
2020 - 5th International Conference on Information Technology (InCIT), 2020
Prince of Songkla University, Phuket Campus (PSU Phuket) has activities every semester. Students ... more Prince of Songkla University, Phuket Campus (PSU Phuket) has activities every semester. Students have to collect activity hours (as credits) for completing the condition of graduation. Sometimes, students who regularly participate in activities will receive enough activity credits. This prevents them from participating in the further activities. Gain more activity credits are not tempting anymore. For this reason, if there is a utility token that can represent as an activity credit, then students can use it for other purposes. It causes joining activity more attractive. The traditional activity credit system uses a simple spreadsheet file, which has several issues such as offline, errors and transparency because all information is stored at a PSU staff only. Thus, it leads us to propose a utility token, called PSUCOIN, changing from a centralized system to a blockchain-based system. Students receive PSUCOIN coins when they attend an activity organized by PSU campus. They will be mor...
2021 18th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2021
Cryptocurrencies are in great demand in society. The number of beginners on the cryptocurrency ma... more Cryptocurrencies are in great demand in society. The number of beginners on the cryptocurrency market increases every day. Most of them only focus on a high return on the cryptocurrency investment. However, they do not aware of the high risk from its volatility. Trading is the most popular way to invest with digital currencies due to its potential returns. The cryptocurrency exchange requires a high learning curve for beginners. There exists a strategy to minimize risk in the cryptocurrency investment called "arbitrage". It exploits the market inefficiency to discover a profitable method. This strategy has been investigated in traditional markets like stock markets. Furthermore, some researchers studied arbitrage on general exchange platforms that are operated by companies. However, to the best of our knowledge, there is no research works on arbitrage in the Decentralized Exchange (DEX). The DEX recently emerged with a huge amount of trading volume and profits. The high pr...
In this study, a novel blockchain-based platform for renewable energy investment is proposed. The... more In this study, a novel blockchain-based platform for renewable energy investment is proposed. The blockchain technology has been shown to be a reliable way to send financial transactions across the world in a decentralized manner, at a fraction of the cost and with a faster transaction time. The proposed platform is capable of handling an equity-sharing investment program for solar PV projects. The platform distributes the electricity generation income by sending it over a blockchain. The Ethereum blockchain is used to create a prototype, which is a smart contract. The prototype is tested with a solar-PV electricity generation data. The result shows that the proposed platform can handle the expected transactions without an error. The overall performance of the proposed platform is tested by comparing its temporal duration and its financial costs with centralized solutions. Therefore, the proposed platform provides all the benefits mentioned at a much cheaper cost.
Software-Defined Networking (SDN) is a new efficiently idea of programmable networks that separat... more Software-Defined Networking (SDN) is a new efficiently idea of programmable networks that separates the control plane from data plane of all network devices. Internet service provider is responsible for all the control decisions and communication among the forwarding elements from centralized controller. SDN provides the various optimized services. Quality of service (QoS) routing is a path computation method that is suitable for the different traffics generated by several applications, while utilization of network resources has increased. This agreement of service is defined by QoS requirements such as throughput, delay, jitter and packet loss etc. Multimedia applications often require assured from multi QoS constrained, causing the NP-complete problem which cannot be simply solved in polynomial time and high management complexity in the transition network. SDN is able to reduce complexity and it is used to efficiently implement traffic, hence SDN significantly values to developmen...
Avec l’omnipresence au quotidien du numerique et de l’informatique, de plus en plus d’utilisateur... more Avec l’omnipresence au quotidien du numerique et de l’informatique, de plus en plus d’utilisateurs souhaitent avoir acces a Internet et a leurs applications via n’importe quel peripherique, de n’importe ou et n’importe quand. Les appareils domestiques intelligents se developpant, les besoins d’echanger des donnees au domicile meme se font de plus en plus sentir. C’est dans ce contexte, celui des services a domicile avec besoin d’interconnexion que se situe notre etude. Ce type de service est qualifie de Home Service (HS) alors que le reseau a domicile est nomme Home Network (HN). La problematique pour les operateurs est alors de concevoir des architectures appropriees a l’interconnexion des HN de maniere securisee tout en permettant un deploiement facile et a grande echelle. Dans la premiere etape, nous considerons la livraison de services securises a travers un reseau de nouvelle generation (NGN) : IMS (IP Multimedia Subsystem). IMS etant l’architecture de reference pour son caract...
International Journal of Advanced Computer Science and Applications
An online review system is an important part of almost every e-commerce platform, especially a to... more An online review system is an important part of almost every e-commerce platform, especially a tourism ecommerce. However, various problems exist in the current online review systems. The review content is stored in a centralized database of each individual platform. Each platform differs in review management methods. In some cases, the review score of the same product disagrees across different platforms. Moreover, a centralized system has low transparency because it is difficult to trace individual actions within the system. As a result, some users are skeptical of the reliability of online reviews in centralized systems. This work proposes a global travel review framework based-on the blockchain technology. The incorporation of blockchain helps improve an online review system. The best practices for online review management from popular platforms, and the guidelines from trusted sources are used to develop the new system. The use of blockchain improves an online review system through its unique features of high transparency, security, and reliability. Additionally, the proposed framework relies on a community-driven environment. The accessibility level of users is controlled by using the smart contract. There is no single authoritative owner of the system. All participants in the system can exert controls on the system equally. This work illustrates the details of a blockchain-based global travel review framework. The advantages and disadvantages of such a system are discussed. The proposed framework can be easily integrated with any existing platforms since it can be accessed publicly.
MATEC Web of Conferences
The product transportation is an important procedure in businesses, which consumes costs and time... more The product transportation is an important procedure in businesses, which consumes costs and times. Effective transportation management can reduce expenses significantly. New technologies such as Global Position System (GPS), maps, notification and network connection can be integrated all together in one small smart phone that provides accessing from anytime and anywhere. In this paper, we propose a smart logistics framework that combines different technologies in order to solve management and tracking issues in a real transportation environment.
Http Www Theses Fr, Sep 27, 2012
Advanced Materials Research, Jul 2, 2014
Water level prediction for supporting the right decision making is crucial. The study of daily ga... more Water level prediction for supporting the right decision making is crucial. The study of daily gage height in Lam Phi-Kun Canal provides essential information to plan for flood prevention and hydroelectric generation of this canal. Daily gage heights in 2011 were used as training instances. We forecasted the gage heights for year 2012 using four different predictors, namely, Linear Regression, Multilayer Perceptron, MLPDQ1 and MLPDQ2. The latter two algorithms are named after our improvements to the existing Multilayer Perceptron by introducing a concept of time-dependent data division and a concept of weight adjustments of the polynomial trend line. Our proposed algorithms are implemented in Java language. The performance evaluation reveals that our two algorithms have distinctly smaller errors than the traditional two predictors. The average errors of our algorithms are less than one meter. We recommend our algorithms for other applications such as rainfall forecasting, sediment forecasting, sales forecasting, and energy consumption trends.
2022 6th International Conference on Information Technology (InCIT), 2022
Smart contracts publicly deployed on blockchain have been shown to contain several vulnerabilitie... more Smart contracts publicly deployed on blockchain have been shown to contain several vulnerabilities that users can maliciously exploit. To detect smart contract vulnerabilities as categorized in the Smart Contract Weakness Classification (SWC) standard, we propose the SWC-based Analysis Tool (SWAT). It operates by matching patterns in Solidity codes, making it easy to use and allowing any Solidity developers to conveniently check their smart contracts before deploying. We conducted experiments to compare the proposed solution against state-of-the-art tools in identifying 46 SWC registries. SWAT outperformed the existing tools in terms of the number of SWC vulnerabilities supported. Moreover, our solution is memory-efficient as it uses 44.58% less memory than other tools.
Informatics
Decentralized finance (DeFi) has exploded in popularity with a billion-dollar market cap. While u... more Decentralized finance (DeFi) has exploded in popularity with a billion-dollar market cap. While uncollateralized lending, known as a flash loan, emerged from DeFi, it has become a primary tool used by attackers to drain investment tokens from DeFi networks. The existing countermeasures seem practical, but no comprehensive quantitative analysis framework was available to test them. This paper proposes the Flash loan Attack Analysis (FAA) framework, which aids security practitioners in understanding the DeFi system’s effects on preventative methods when various factors change. The quantitative predictions can help security professionals in identifying hidden dangers and more efficiently adopting countermeasure strategies. The simulation predicts that the existing strategy, fair reserves, can fully protect the platform in a typical market environment; however, in a highly volatile market where the token price drops by 60% in a single hour, it will be broken, causing more than $8 millio...
The ongoing growth of connectivity has brought new opportunities for Home Network; Home network w... more The ongoing growth of connectivity has brought new opportunities for Home Network; Home network will soon be a place of a large amount of services, from the gadget to the home control. In order to provide and render these services, operator should propose a framework for supporting the deployment of new services. This paper focuses on home services, proposing an overview of potential service architectures. Then a photo sharing services validates through implementation the concepts of Home Services and an analysis of architecture complexity is proposed to conclude this work.
The challenge of mobility in IP layer allows hosts to retain their addresses without requiring ro... more The challenge of mobility in IP layer allows hosts to retain their addresses without requiring routers to propagate specific routes or breaking current connections [1, 2]. Mobile IPv6 makes transparency of IP layer. In particular, as long as they remain idle, all open TCP connections survive a change in network and are ready for further use [1, 2, 8]. This paper proposes an experiment of mobile IPv6 for Linux testbed system, and we have analyzed some testbed results. This testbed uses Mobile IPv6 implementation on Linux.
Peer-to-Peer Networking and Applications, 2021
Fake reviews are a major problem in online consumer feedback systems that not only mislead people... more Fake reviews are a major problem in online consumer feedback systems that not only mislead people due to incorrect information but also damage the overall credibility of online businesses. Popular online review platforms have tried to overcome this problem through various strategies. However, most attempts end with vulnerabilities and untraceable results. We demonstrate how centralized online review systems are vulnerable to attacks. The blockchain-based online review system, which incorporates a token curated registry (TCR), is proposed in this work. Mathematical models are defined to analyze the capability to handle problems of centralized systems and the proposed framework. Additionally, we construct scenarios to demonstrate empirical results on fake review spam prevention. Our framework can discourage fraudsters by requiring costs and exposing their actions. Moreover, the system relies on the majority of users rather than a central authority. Furthermore, the proposed framework ...
2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2020
Today, the online review system cannot fully support the business since there are fraudulent acti... more Today, the online review system cannot fully support the business since there are fraudulent activities inside. The companies that get low score reviews are induced to raise their score for the market competition capability by paying to the platform for deleting or editing the posted reviews. Moreover, the automatic filtration system of a platform removes some reviews without the awareness of the users. The low transparency platform causes low credibility toward the reviews. Blockchain technology provides exceptionally high transparency since every action can be traced publicly. However, there are some tradeoffs that need to be considered, such as cost and response time. This work tends to find the potential of using Blockchain technology in the online review system by testing four implementation approaches of the Ethereum Smart Contract. The result illustrates that using IPFS to store the data is a practical way of reducing transaction costs. Besides, preventing using Smart Contrac...
In present days, home devices with network capabilities are widely used and augmented for deliver... more In present days, home devices with network capabilities are widely used and augmented for delivering several Home Services (HS) to more end users. The technology integration offers new and exciting opportunities to increase the device connectivity within a home for many proposals of home automation. This paper is designed and implemented for a cost effective, flexible, manageable home automation system. The proposed system consists of three main components: a device control using a microcontroller (e.g., Raspberry PI with control circuit), a notification system (Social network integration) and a user control from anywhere, any time and any device. This system can support a wide range of home appliances connecting through the network as the Internet of Things (IoT) concept. A user is able to easily control home automation system by several ubiquitous devices. Air conditioners and fans are sample devices to be controlled by our system in order to demonstrate the simplicity and effecti...
2019 23rd International Computer Science and Engineering Conference (ICSEC), 2019
This research aims to present the drinking water transportation framework which uses a mobile app... more This research aims to present the drinking water transportation framework which uses a mobile application to calculate the minimum distance of the transportation to reduce consuming resources and improve routing decision time. The Android application is developed to be able to display positions, traveling routes, approximate total distance and total duration spending for drinking water transportation. This framework provides 2 methods to calculate transportation routes 1) a fast calculating method using Nearest Neighbor algorithm and 2) an exact calculating method using Dynamic Programming algorithm. This research shows the result of testing and comparing processing times between these 2 algorithms to select the most appropriate choice for actual use. The results are illustrated that Dynamic programming always gives the best distance result. However, it spends much time to calculate. Eventually, the experimental results are described that searching the shortest route for 16 places t...
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2016
The Prince of Songkla University (PSU) is the top five universities of Thailand that still uses t... more The Prince of Songkla University (PSU) is the top five universities of Thailand that still uses traditional networking. Presently, there are Internet applications that are able to provide dynamic, manageable, and adaptable features such as Software-defined Networking (SDN). SDN is a recent concept of programmable networks that divides the control plane and data plane of all network devices. It can be programmed via an open interface which is interesting to implement SDN because of their various benefits such as centralized network provisioning, lower operating costs etc. In this paper, we propose comparison between traditional PSU network which is defined Static routing (Static routing non-SDN) and SDN which are using programmable algorithm such as Bellman-Ford SDN (BFSDN) unicast, Dijkstra SDN (DSDN) on both unicast and multicast in order to determine worthiness of migration from traditional network to SDN. In part of topology emulator, we have replicated topology by Mininet. Its p...
International Journal of Computer Science & Applications, 2013
Nowadays, home networks have integrated day to day life through the classical internet access and... more Nowadays, home networks have integrated day to day life through the classical internet access and deliver numerous services to end users. This home entrance is a real opportunity for operators to deploy services directly between homes. However, one major issue is the interconnection between Home Networks (HN) which requires suitable architectures and efficient authentication mechanisms. In this paper, two network architectures were proposed to interconnect HNs in order to support home service delivery and then compared with the IMS as reference architecture. The first architecture was based on a centralized SIP solution and used HTTP digest for authentication purpose; while the second proposition consisted in a distributed architecture based on pure P2P and Identity based cryptography. The study of these two solutions has been undergone through the simulation of a simple photo sharing scenario. As a result, the centralized SIP solution can be relevant for an average number of users ...
2020 - 5th International Conference on Information Technology (InCIT), 2020
Prince of Songkla University, Phuket Campus (PSU Phuket) has activities every semester. Students ... more Prince of Songkla University, Phuket Campus (PSU Phuket) has activities every semester. Students have to collect activity hours (as credits) for completing the condition of graduation. Sometimes, students who regularly participate in activities will receive enough activity credits. This prevents them from participating in the further activities. Gain more activity credits are not tempting anymore. For this reason, if there is a utility token that can represent as an activity credit, then students can use it for other purposes. It causes joining activity more attractive. The traditional activity credit system uses a simple spreadsheet file, which has several issues such as offline, errors and transparency because all information is stored at a PSU staff only. Thus, it leads us to propose a utility token, called PSUCOIN, changing from a centralized system to a blockchain-based system. Students receive PSUCOIN coins when they attend an activity organized by PSU campus. They will be mor...
2021 18th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2021
Cryptocurrencies are in great demand in society. The number of beginners on the cryptocurrency ma... more Cryptocurrencies are in great demand in society. The number of beginners on the cryptocurrency market increases every day. Most of them only focus on a high return on the cryptocurrency investment. However, they do not aware of the high risk from its volatility. Trading is the most popular way to invest with digital currencies due to its potential returns. The cryptocurrency exchange requires a high learning curve for beginners. There exists a strategy to minimize risk in the cryptocurrency investment called "arbitrage". It exploits the market inefficiency to discover a profitable method. This strategy has been investigated in traditional markets like stock markets. Furthermore, some researchers studied arbitrage on general exchange platforms that are operated by companies. However, to the best of our knowledge, there is no research works on arbitrage in the Decentralized Exchange (DEX). The DEX recently emerged with a huge amount of trading volume and profits. The high pr...
In this study, a novel blockchain-based platform for renewable energy investment is proposed. The... more In this study, a novel blockchain-based platform for renewable energy investment is proposed. The blockchain technology has been shown to be a reliable way to send financial transactions across the world in a decentralized manner, at a fraction of the cost and with a faster transaction time. The proposed platform is capable of handling an equity-sharing investment program for solar PV projects. The platform distributes the electricity generation income by sending it over a blockchain. The Ethereum blockchain is used to create a prototype, which is a smart contract. The prototype is tested with a solar-PV electricity generation data. The result shows that the proposed platform can handle the expected transactions without an error. The overall performance of the proposed platform is tested by comparing its temporal duration and its financial costs with centralized solutions. Therefore, the proposed platform provides all the benefits mentioned at a much cheaper cost.
Software-Defined Networking (SDN) is a new efficiently idea of programmable networks that separat... more Software-Defined Networking (SDN) is a new efficiently idea of programmable networks that separates the control plane from data plane of all network devices. Internet service provider is responsible for all the control decisions and communication among the forwarding elements from centralized controller. SDN provides the various optimized services. Quality of service (QoS) routing is a path computation method that is suitable for the different traffics generated by several applications, while utilization of network resources has increased. This agreement of service is defined by QoS requirements such as throughput, delay, jitter and packet loss etc. Multimedia applications often require assured from multi QoS constrained, causing the NP-complete problem which cannot be simply solved in polynomial time and high management complexity in the transition network. SDN is able to reduce complexity and it is used to efficiently implement traffic, hence SDN significantly values to developmen...
Avec l’omnipresence au quotidien du numerique et de l’informatique, de plus en plus d’utilisateur... more Avec l’omnipresence au quotidien du numerique et de l’informatique, de plus en plus d’utilisateurs souhaitent avoir acces a Internet et a leurs applications via n’importe quel peripherique, de n’importe ou et n’importe quand. Les appareils domestiques intelligents se developpant, les besoins d’echanger des donnees au domicile meme se font de plus en plus sentir. C’est dans ce contexte, celui des services a domicile avec besoin d’interconnexion que se situe notre etude. Ce type de service est qualifie de Home Service (HS) alors que le reseau a domicile est nomme Home Network (HN). La problematique pour les operateurs est alors de concevoir des architectures appropriees a l’interconnexion des HN de maniere securisee tout en permettant un deploiement facile et a grande echelle. Dans la premiere etape, nous considerons la livraison de services securises a travers un reseau de nouvelle generation (NGN) : IMS (IP Multimedia Subsystem). IMS etant l’architecture de reference pour son caract...
International Journal of Advanced Computer Science and Applications
An online review system is an important part of almost every e-commerce platform, especially a to... more An online review system is an important part of almost every e-commerce platform, especially a tourism ecommerce. However, various problems exist in the current online review systems. The review content is stored in a centralized database of each individual platform. Each platform differs in review management methods. In some cases, the review score of the same product disagrees across different platforms. Moreover, a centralized system has low transparency because it is difficult to trace individual actions within the system. As a result, some users are skeptical of the reliability of online reviews in centralized systems. This work proposes a global travel review framework based-on the blockchain technology. The incorporation of blockchain helps improve an online review system. The best practices for online review management from popular platforms, and the guidelines from trusted sources are used to develop the new system. The use of blockchain improves an online review system through its unique features of high transparency, security, and reliability. Additionally, the proposed framework relies on a community-driven environment. The accessibility level of users is controlled by using the smart contract. There is no single authoritative owner of the system. All participants in the system can exert controls on the system equally. This work illustrates the details of a blockchain-based global travel review framework. The advantages and disadvantages of such a system are discussed. The proposed framework can be easily integrated with any existing platforms since it can be accessed publicly.
MATEC Web of Conferences
The product transportation is an important procedure in businesses, which consumes costs and time... more The product transportation is an important procedure in businesses, which consumes costs and times. Effective transportation management can reduce expenses significantly. New technologies such as Global Position System (GPS), maps, notification and network connection can be integrated all together in one small smart phone that provides accessing from anytime and anywhere. In this paper, we propose a smart logistics framework that combines different technologies in order to solve management and tracking issues in a real transportation environment.
Http Www Theses Fr, Sep 27, 2012
Advanced Materials Research, Jul 2, 2014
Water level prediction for supporting the right decision making is crucial. The study of daily ga... more Water level prediction for supporting the right decision making is crucial. The study of daily gage height in Lam Phi-Kun Canal provides essential information to plan for flood prevention and hydroelectric generation of this canal. Daily gage heights in 2011 were used as training instances. We forecasted the gage heights for year 2012 using four different predictors, namely, Linear Regression, Multilayer Perceptron, MLPDQ1 and MLPDQ2. The latter two algorithms are named after our improvements to the existing Multilayer Perceptron by introducing a concept of time-dependent data division and a concept of weight adjustments of the polynomial trend line. Our proposed algorithms are implemented in Java language. The performance evaluation reveals that our two algorithms have distinctly smaller errors than the traditional two predictors. The average errors of our algorithms are less than one meter. We recommend our algorithms for other applications such as rainfall forecasting, sediment forecasting, sales forecasting, and energy consumption trends.