Achmad Basuki - Academia.edu (original) (raw)

Papers by Achmad Basuki

2017 11th International Conference on Telecommunication Systems Services and Applications (TSSA)

Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi)

There are many cases of email abuse that have the potential to harm others. This email abuse is c... more There are many cases of email abuse that have the potential to harm others. This email abuse is commonly known as spam, which contains advertisements, phishing scams, and even malware. This study purpose to know the classification of email spam with ham using the KNN method as an effort to reduce the amount of spam. KNN can classify spam or ham in an email by checking it using a different K value approach. The results of the classification evaluation using confusion matrix resulted in the KNN method with a value of K = 1 having the highest accuracy value of 91.4%. From the results of the study, it is known that the optimization of the K value in KNN using frequency distribution clustering can produce high accuracy of 100%, while k-means clustering produces an accuracy of 99%. So based on the results of the existing accuracy values, the frequency distribution clustering and k-means clustering can be used to optimize the K-optimal value of the KNN in the classification of existing spa...

International Journal of Online Engineering (iJOE)

Internet of things (IoT) is a complex system with few best practices in building ones, especially... more Internet of things (IoT) is a complex system with few best practices in building ones, especially on handling real-time communication between IoT devices to the Internet. A framework is often used to fasten building IoT system. This paper present Mobile Internet of Things (MIOT), a framework which use a smartphone as the main component to handle communication between IoT device and the internet. A smartphone is used as the communication gateway (relay) for IoT devices and not as the IoT controller as in common Smartphone-IoT approach. For evaluation purpose, two implementations of IoT prototype scenario is built, an environmental monitoring and a remote controller (RC) car. The experiment shows a quick and easy deployment of IoT system. The Environment Monitoring able to send data to the server in real-time, and control The RC Car with a reasonable response time.The experiment on 200 ms interval between each packet, shows that MIOT Framework has round-trip latency between MIOT Serve...

Journal of Information Technology and Computer Science

Proportional tuition fees assessment is an optimization process to find a compromise point betwee... more Proportional tuition fees assessment is an optimization process to find a compromise point between student willingness to pay and institution income. Using a genetic algorithm to find optimal solutions requires effective chromosome representations, parameters, and operator genetic to obtain efficient search. This paper proposes a new chromosome representation and also finding efficient genetic parameters to solve the proportional tuition fees assessment problem. The results of applying the new chromosome representation are compared with another chromosome representation in the previous study. The evaluations show that the proposed chromosome representation obtains better results than the other in both execution time required and the quality of the solutions.

International Journal of Electrical and Computer Engineering (IJECE)

This paper proposes load-balancing algorithm on the basis of the Extended Dijkstra’s shortest pat... more This paper proposes load-balancing algorithm on the basis of the Extended Dijkstra’s shortest path algorithm for Software Defined Networking (SDN). The Extended Dijkstra’s algorithm considers not only the edge weights, but also the node weights to find the nearest server for a requesting client. The proposed algorithm also considers the link load in order to avoid congestion. We use Pyretic to implement the proposed algorithm and compare it with related ones under the Abilene network topology with the Mininet emulation tool. As shown by the comparisons, the proposed algorithm outperforms the others in term of the network end-to-end latency, throughput and response time at the expense of a little heavier computation load and more memory usage on the SDN controller.

International Journal of Electrical and Computer Engineering (IJECE)

Predicting arrival times of buses is a key challenge in the context of building intelligent publi... more Predicting arrival times of buses is a key challenge in the context of building intelligent public transportation systems. The bus arrival time is the primary information for providing passengers with an accurate information system that can reduce passenger waiting times. In this paper, we used the normal distribution method to the random of travel times data in a bus line number 243 in Taipei area. In developing the models, data were collected from Taipei Bus Company. A normal distribution method used for predicting the bus arrival time in bus stop to ensure users not to miss the bus, and compare the result with the existing application. The result of our experiment showed that our proposed method has a better prediction than existing application, with the probability user not to miss the bus in peak time is 93% and in normal time is 85%, greater than from the existing application with the 65% probability in peak time, and 70% in normal time.

Jurnal Teknologi Informasi dan Ilmu Komputer

Rumah cerdas saat ini dapat terdiri dari berbagai macam peralatan pendukung didalamnya dimulai da... more Rumah cerdas saat ini dapat terdiri dari berbagai macam peralatan pendukung didalamnya dimulai dari kontrol terhadap lampu, tv, speaker dan beberapa peralatan lainnya. Dengan semakin bervariasinya peralatan tersebut, implementasi peralatan dalam rumah cerdas tergolong rumit karena peralatan tersebut dibuat oleh berbagai vendor dan membutuhkan proses konfigurasi (terhadap jaringan) yang cukup menyita waktu. Penelitian kami menghasilkan purwarupa sistem peralatan rumah cerdas memanfaatkan mikrokomputer Raspberry pi yang mampu secara pervasive ditemukan oleh peralatan seperti komputer maupun smartphone yang dapat digunakan sebagai alat kontrol terhadap switching lampu memanfaatkan protokol Universal Plug and Play (UPnP) yang terintegrasi dengan Raspberry Pi Genaral Purpose Input/Output (GPIO). Pengembangan purwarupa dilakukan dengan memanfaatkan framework GUPnP untuk diintegrasikan dengan library Wiring Pi pada GPIO Raspberry Pi, Pengujian dilakukan dengan melakukan perhitungan waktu proses switching lampu selama 20 kali dengan menggunakan aplikasi generik control point UPnP Spy. Hasil penelitian menunjukkan bahwa integrasi protokol UPnP dan Raspberry Pi GPIO secara fungsional telah memiliki fitur pengenalan pervasif pada jaringan lokal dan mampu memberikan informasi perangkat dan jenis layanan yang diberikan oleh Raspberry Pi. Perubahan status pada GPIO dapat dilakukan dengan merubah parameter dari aplikasi kontrol. Berdasarkan perhitungan delay, didapatkan proses pengecekan status pada GPIO rata-rata adalah 5.1 ms, dan proses perubahan status GPIO memiliki rata-rata delay sebesar 14.8 ms. Penelitian ini diharapkan memiliki kontribusi menjembatani mekanisme pengenalan peralatan pada sistem rumah cerdas menjadi lebih pervasive dan mudah dikenali oleh peralatan yang lain dan dapat memberikan gambaran bahwa perangkat mikrokomputer Raspberry Pi dapat digunakan untuk pengembangan perangkat Rumah Cerdas yang memiliki fitur pervasif.

Journal of Information Technology and Computer Science

Internet becomes critical infrastructure in the distribution of information. The information is u... more Internet becomes critical infrastructure in the distribution of information. The information is used for decision making and ensure the success of human activities. However, the distribution of information in rural Indonesia is inconvenient, because the digital communication infrastructure (internet) doesn't cover all areas in Indonesia. This problem causes the digital divide in Indonesia. This study proposes communications infrastructure and data transfer mechanism or media sharing that can be applied to a variety of rural areas conditions in Indonesia, which has limited communications infrastructure. The approach is to build low power digital carrier devices in the form of minicomputer and utilize Delay or Disruptions Tolerant Network (DTN) architecture. Testing results in the digital carrier node show that the data is successfully delivered.

Journal of Computer and Communications, 2017

The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in V... more The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in Vehicular Environment (WAVE). An implementation of that standard as the MAC Protocol in a high-density of nodes in Vehicular Ad-Hoc Networks (VANETs) may create a performance drawback, in particular for packet loss and delay whenever collisions happen. Introducing Time Division Multiple Access (TDMA) schemes can improve the performance. However, TDMA scheduling is difficult to manage the case of high-density of traffic, the high mobility of vehicles, and dynamic network topology. This journal proposes a clustered-based TDMA by traffic priority in VANETs. The clustered traffic is defined as high and low traffic priority and embedded in TDMA MAC Header. The evaluation result obtained through NS3 Simulator shows that the proposed approach performed better in a high-density of nodes.

2016 24th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2016

The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in V... more The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in Vehicular Environment (WAVE). An implementation of that standard as the MAC Protocol in a high-density of nodes in Vehicular Ad-Hoc Networks (VANETs) may create a performance drawback, in particular for packet loss and delay whenever collisions happened. Introducing Time Division Multiple Access (TDMA) schemes can improve the performance. However, TDMA scheduling is difficult to manage in the case of high-density of traffic, the high mobility of vehicles, and dynamic network topology. This paper proposes a clustered-based TDMA by traffic priority in VANETs. The clustered traffic is defined as high and low traffic priority and embedded in TDMA MAC Header. The evaluation result obtained through NS3 Simulator shows that the proposed approach performed better in a high-density of nodes.

TELKOMNIKA (Telecommunication Computing Electronics and Control), 2015

Nowadays, Internet social media has enriched the way people to communicate and interract each oth... more Nowadays, Internet social media has enriched the way people to communicate and interract each other. Will it be possible for people to interact with their home appliances around? This paper proposes a new approach in smart home system that made possible for people to remotely interact with their appliances using social media networks. In this paper, we present a smart home prototype system that leverages Twitter's Application Program Interface (API) to remottely control home appliances over the Internet. Experiment results showed that the system immediately responds to remote commands sent over a social media account to control home appliances. The system responds the command in 3672.96 ms. Publish-subscribe method work better in mass announcement communication system. Home system could notice all householders in less than 6 s independenly from number of householder. Our proposed method gives alternative solution to build reliable, fast and simple control method.

Proceedings of the 4th Asian Conference on Internet Engineering - AINTEC '08, 2008

Hands-on experiences are indispensable to train IT operators. However, it is often difficult to c... more Hands-on experiences are indispensable to train IT operators. However, it is often difficult to conduct hands-on practices in many locations due to lack of resources such as PCs and network equipments. The cost of gathering lecturers and participants at one hands-on site is another possible problem in this situation. Utilization of remotely located handson environment is one of the solution to solve these problems. StarBED is a testbed facility for conducting network experiments. Installation of any OSes, adjusting the network topologies according to the requirements can be easily realized utilizing StarBED and SpringOS. A software suite, SpringOS, was developed exclusively for automating the experiment setups in StarBED. This facility could be used to address the problems of lack of resources and high cost for traveling. This research conducted a region-wide remote hands-on workshop utilizing the StarBED inviting 42 participants from 10 Asian countries. The workshop was designed so that the remote participants do not have to travel to single place, and prepare same specification PCs at each site. Through the collected data and feedback, the proposed workshop model was proved to be feasible and effective. This paper describes the requirements and approaches for region-wide remote hands-on workshop utilizing StarBED for building target hands-on environment. As the contents of the conducted workshop could be applied to the general IT human resource development programs, this paper could Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee.

Journal of Information Processing, 2012

The tussle in IP multicast, where different enablers have interests that are adverse to each othe... more The tussle in IP multicast, where different enablers have interests that are adverse to each other, has led to a halt in inter-provider multicast deployment and created a situation in which enabling inter-domain multicast routing is considered a deterrent for network providers. This paper presents ODMT (On-demand Inter-domain Multicast Tunneling), an on-demand inter-provider multicast tunneling that is autonomous in operation and manageable through its definable policy control. In the architectural design, we propose a new approach of enabling inter-provider multicast by decoupling the control-plane and forwarding-plane. Focusing on the control-plane without changing the forwardingplane, our solution changes the traditional open multicast service model into a more manageable service model in inter-domain multicast operation, hence it eases the Internet-wide multicast deployment.

Journal of Information Processing, 2013

This paper studies the innovative methodology for developing IT education from the traditional fa... more This paper studies the innovative methodology for developing IT education from the traditional face-to-face model to full capability of distance learning by combining a remote computer laboratory and a distance e-learning environment. There are three approaches presented with different implementations of laboratory technologies and learning models. The design challenge is to address the limitations of resources at region-wide learning sites, cost-effectiveness and scalability. Computer virtualization and StarBED computing testbed can achieve a larger scale of laboratory size with less cost of equipment and administration workload. The live learning environment ensures quality of realtime communications during lecture and lab sessions by employing IPv6 Multicast on a satellite UDLR network. The self-paced learning environment is proposed to enable a flexible schedule, resource reusability, and scalability. The lab supervision system is the key component to enhance teaching effectiveness in the self-paced hands-on practice by systematically automating the lab supervision skills of lecturers. These approaches have been evaluated as feasible, cost-effective and scalable by the real implementations of similar Asia-wide workshops. Trade-off overheads and analysis on technology and pedagogy perspectives are made to compare their characteristics.

2007 International Symposium on Applications and the Internet Workshops, 2007

This paper discusses the problems of conducting a real-time workshop, where the instructors and t... more This paper discusses the problems of conducting a real-time workshop, where the instructors and the participants are located in different places, and the participants should perform hands-on lab exercises using computers that are located in another place. To address ...

Abstract: IT education in Asia is limited due to the shortage of IT lecturers and lack of equipme... more Abstract: IT education in Asia is limited due to the shortage of IT lecturers and lack of equipments for hands-on exercise. Distance learning is insufficient to solve the problem because 1) It commonly supports lecture but not computer-based hands-on exercise 2) Quality of Internet in Asia ...

This paper presents a method to monitor information of a large-sized multicast group that can fol... more This paper presents a method to monitor information of a large-sized multicast group that can follow the group's dynamics in realtime while avoiding feedback implosion by using probabilistic polling. In particular, this paper improves the probabilistic-polling-based approach by deriving a reference mean value as the reference control value for the number of expected feedback from the properties of a binomial estimation model. As a result, our method adaptively changes its estimation parameters depending on the feedback from receivers in order to achieve a fast estimate time with high accuracy, while preventing the possible occurrence of feedback implosion. Our experimental implementation and evaluation on PlanetLab showed that the proposed method effectively controls the number of feedback and accurately estimates the size of a dynamic multicast group.

TELKOMNIKA Telecommunication Computing Electronics and Control, 2018

High-resolution imagery taken from Unmanned Aerial Vehicle (UAV) is now often used as an alternat... more High-resolution imagery taken from Unmanned Aerial Vehicle (UAV) is now often used as an alternative in monitoring the agronomic plants compared to satellite imagery. This paper presents a method to identify Citronella among other plants based on UAV imagery. The method utilizes Support Vector Machine (SVM) to classify Citronella among other plants according to the extraction of texture feature. The implementation of the method was evaluated using two group of datasets: 1) consists of Citronella, Kaffir Lime, other green plants, vacant soil, and buildings, and 2) consists of Citronella and paddy rice plants. The evaluation results show that the proposed method can identify Citronella on the first group of datasets with an accuracy 94.23% and Kappa value 88.48%, whereas on the second group of datasets with an accuracy 100% and Kappa value 100%.

2017 11th International Conference on Telecommunication Systems Services and Applications (TSSA)

Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi)

There are many cases of email abuse that have the potential to harm others. This email abuse is c... more There are many cases of email abuse that have the potential to harm others. This email abuse is commonly known as spam, which contains advertisements, phishing scams, and even malware. This study purpose to know the classification of email spam with ham using the KNN method as an effort to reduce the amount of spam. KNN can classify spam or ham in an email by checking it using a different K value approach. The results of the classification evaluation using confusion matrix resulted in the KNN method with a value of K = 1 having the highest accuracy value of 91.4%. From the results of the study, it is known that the optimization of the K value in KNN using frequency distribution clustering can produce high accuracy of 100%, while k-means clustering produces an accuracy of 99%. So based on the results of the existing accuracy values, the frequency distribution clustering and k-means clustering can be used to optimize the K-optimal value of the KNN in the classification of existing spa...

International Journal of Online Engineering (iJOE)

Internet of things (IoT) is a complex system with few best practices in building ones, especially... more Internet of things (IoT) is a complex system with few best practices in building ones, especially on handling real-time communication between IoT devices to the Internet. A framework is often used to fasten building IoT system. This paper present Mobile Internet of Things (MIOT), a framework which use a smartphone as the main component to handle communication between IoT device and the internet. A smartphone is used as the communication gateway (relay) for IoT devices and not as the IoT controller as in common Smartphone-IoT approach. For evaluation purpose, two implementations of IoT prototype scenario is built, an environmental monitoring and a remote controller (RC) car. The experiment shows a quick and easy deployment of IoT system. The Environment Monitoring able to send data to the server in real-time, and control The RC Car with a reasonable response time.The experiment on 200 ms interval between each packet, shows that MIOT Framework has round-trip latency between MIOT Serve...

Journal of Information Technology and Computer Science

Proportional tuition fees assessment is an optimization process to find a compromise point betwee... more Proportional tuition fees assessment is an optimization process to find a compromise point between student willingness to pay and institution income. Using a genetic algorithm to find optimal solutions requires effective chromosome representations, parameters, and operator genetic to obtain efficient search. This paper proposes a new chromosome representation and also finding efficient genetic parameters to solve the proportional tuition fees assessment problem. The results of applying the new chromosome representation are compared with another chromosome representation in the previous study. The evaluations show that the proposed chromosome representation obtains better results than the other in both execution time required and the quality of the solutions.

International Journal of Electrical and Computer Engineering (IJECE)

This paper proposes load-balancing algorithm on the basis of the Extended Dijkstra’s shortest pat... more This paper proposes load-balancing algorithm on the basis of the Extended Dijkstra’s shortest path algorithm for Software Defined Networking (SDN). The Extended Dijkstra’s algorithm considers not only the edge weights, but also the node weights to find the nearest server for a requesting client. The proposed algorithm also considers the link load in order to avoid congestion. We use Pyretic to implement the proposed algorithm and compare it with related ones under the Abilene network topology with the Mininet emulation tool. As shown by the comparisons, the proposed algorithm outperforms the others in term of the network end-to-end latency, throughput and response time at the expense of a little heavier computation load and more memory usage on the SDN controller.

International Journal of Electrical and Computer Engineering (IJECE)

Predicting arrival times of buses is a key challenge in the context of building intelligent publi... more Predicting arrival times of buses is a key challenge in the context of building intelligent public transportation systems. The bus arrival time is the primary information for providing passengers with an accurate information system that can reduce passenger waiting times. In this paper, we used the normal distribution method to the random of travel times data in a bus line number 243 in Taipei area. In developing the models, data were collected from Taipei Bus Company. A normal distribution method used for predicting the bus arrival time in bus stop to ensure users not to miss the bus, and compare the result with the existing application. The result of our experiment showed that our proposed method has a better prediction than existing application, with the probability user not to miss the bus in peak time is 93% and in normal time is 85%, greater than from the existing application with the 65% probability in peak time, and 70% in normal time.

Jurnal Teknologi Informasi dan Ilmu Komputer

Rumah cerdas saat ini dapat terdiri dari berbagai macam peralatan pendukung didalamnya dimulai da... more Rumah cerdas saat ini dapat terdiri dari berbagai macam peralatan pendukung didalamnya dimulai dari kontrol terhadap lampu, tv, speaker dan beberapa peralatan lainnya. Dengan semakin bervariasinya peralatan tersebut, implementasi peralatan dalam rumah cerdas tergolong rumit karena peralatan tersebut dibuat oleh berbagai vendor dan membutuhkan proses konfigurasi (terhadap jaringan) yang cukup menyita waktu. Penelitian kami menghasilkan purwarupa sistem peralatan rumah cerdas memanfaatkan mikrokomputer Raspberry pi yang mampu secara pervasive ditemukan oleh peralatan seperti komputer maupun smartphone yang dapat digunakan sebagai alat kontrol terhadap switching lampu memanfaatkan protokol Universal Plug and Play (UPnP) yang terintegrasi dengan Raspberry Pi Genaral Purpose Input/Output (GPIO). Pengembangan purwarupa dilakukan dengan memanfaatkan framework GUPnP untuk diintegrasikan dengan library Wiring Pi pada GPIO Raspberry Pi, Pengujian dilakukan dengan melakukan perhitungan waktu proses switching lampu selama 20 kali dengan menggunakan aplikasi generik control point UPnP Spy. Hasil penelitian menunjukkan bahwa integrasi protokol UPnP dan Raspberry Pi GPIO secara fungsional telah memiliki fitur pengenalan pervasif pada jaringan lokal dan mampu memberikan informasi perangkat dan jenis layanan yang diberikan oleh Raspberry Pi. Perubahan status pada GPIO dapat dilakukan dengan merubah parameter dari aplikasi kontrol. Berdasarkan perhitungan delay, didapatkan proses pengecekan status pada GPIO rata-rata adalah 5.1 ms, dan proses perubahan status GPIO memiliki rata-rata delay sebesar 14.8 ms. Penelitian ini diharapkan memiliki kontribusi menjembatani mekanisme pengenalan peralatan pada sistem rumah cerdas menjadi lebih pervasive dan mudah dikenali oleh peralatan yang lain dan dapat memberikan gambaran bahwa perangkat mikrokomputer Raspberry Pi dapat digunakan untuk pengembangan perangkat Rumah Cerdas yang memiliki fitur pervasif.

Journal of Information Technology and Computer Science

Internet becomes critical infrastructure in the distribution of information. The information is u... more Internet becomes critical infrastructure in the distribution of information. The information is used for decision making and ensure the success of human activities. However, the distribution of information in rural Indonesia is inconvenient, because the digital communication infrastructure (internet) doesn't cover all areas in Indonesia. This problem causes the digital divide in Indonesia. This study proposes communications infrastructure and data transfer mechanism or media sharing that can be applied to a variety of rural areas conditions in Indonesia, which has limited communications infrastructure. The approach is to build low power digital carrier devices in the form of minicomputer and utilize Delay or Disruptions Tolerant Network (DTN) architecture. Testing results in the digital carrier node show that the data is successfully delivered.

Journal of Computer and Communications, 2017

The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in V... more The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in Vehicular Environment (WAVE). An implementation of that standard as the MAC Protocol in a high-density of nodes in Vehicular Ad-Hoc Networks (VANETs) may create a performance drawback, in particular for packet loss and delay whenever collisions happen. Introducing Time Division Multiple Access (TDMA) schemes can improve the performance. However, TDMA scheduling is difficult to manage the case of high-density of traffic, the high mobility of vehicles, and dynamic network topology. This journal proposes a clustered-based TDMA by traffic priority in VANETs. The clustered traffic is defined as high and low traffic priority and embedded in TDMA MAC Header. The evaluation result obtained through NS3 Simulator shows that the proposed approach performed better in a high-density of nodes.

2016 24th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2016

The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in V... more The IEEE 802.11p is a standard in a vehicular communication system, known as Wireless Access in Vehicular Environment (WAVE). An implementation of that standard as the MAC Protocol in a high-density of nodes in Vehicular Ad-Hoc Networks (VANETs) may create a performance drawback, in particular for packet loss and delay whenever collisions happened. Introducing Time Division Multiple Access (TDMA) schemes can improve the performance. However, TDMA scheduling is difficult to manage in the case of high-density of traffic, the high mobility of vehicles, and dynamic network topology. This paper proposes a clustered-based TDMA by traffic priority in VANETs. The clustered traffic is defined as high and low traffic priority and embedded in TDMA MAC Header. The evaluation result obtained through NS3 Simulator shows that the proposed approach performed better in a high-density of nodes.

TELKOMNIKA (Telecommunication Computing Electronics and Control), 2015

Nowadays, Internet social media has enriched the way people to communicate and interract each oth... more Nowadays, Internet social media has enriched the way people to communicate and interract each other. Will it be possible for people to interact with their home appliances around? This paper proposes a new approach in smart home system that made possible for people to remotely interact with their appliances using social media networks. In this paper, we present a smart home prototype system that leverages Twitter's Application Program Interface (API) to remottely control home appliances over the Internet. Experiment results showed that the system immediately responds to remote commands sent over a social media account to control home appliances. The system responds the command in 3672.96 ms. Publish-subscribe method work better in mass announcement communication system. Home system could notice all householders in less than 6 s independenly from number of householder. Our proposed method gives alternative solution to build reliable, fast and simple control method.

Proceedings of the 4th Asian Conference on Internet Engineering - AINTEC '08, 2008

Hands-on experiences are indispensable to train IT operators. However, it is often difficult to c... more Hands-on experiences are indispensable to train IT operators. However, it is often difficult to conduct hands-on practices in many locations due to lack of resources such as PCs and network equipments. The cost of gathering lecturers and participants at one hands-on site is another possible problem in this situation. Utilization of remotely located handson environment is one of the solution to solve these problems. StarBED is a testbed facility for conducting network experiments. Installation of any OSes, adjusting the network topologies according to the requirements can be easily realized utilizing StarBED and SpringOS. A software suite, SpringOS, was developed exclusively for automating the experiment setups in StarBED. This facility could be used to address the problems of lack of resources and high cost for traveling. This research conducted a region-wide remote hands-on workshop utilizing the StarBED inviting 42 participants from 10 Asian countries. The workshop was designed so that the remote participants do not have to travel to single place, and prepare same specification PCs at each site. Through the collected data and feedback, the proposed workshop model was proved to be feasible and effective. This paper describes the requirements and approaches for region-wide remote hands-on workshop utilizing StarBED for building target hands-on environment. As the contents of the conducted workshop could be applied to the general IT human resource development programs, this paper could Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee.

Journal of Information Processing, 2012

The tussle in IP multicast, where different enablers have interests that are adverse to each othe... more The tussle in IP multicast, where different enablers have interests that are adverse to each other, has led to a halt in inter-provider multicast deployment and created a situation in which enabling inter-domain multicast routing is considered a deterrent for network providers. This paper presents ODMT (On-demand Inter-domain Multicast Tunneling), an on-demand inter-provider multicast tunneling that is autonomous in operation and manageable through its definable policy control. In the architectural design, we propose a new approach of enabling inter-provider multicast by decoupling the control-plane and forwarding-plane. Focusing on the control-plane without changing the forwardingplane, our solution changes the traditional open multicast service model into a more manageable service model in inter-domain multicast operation, hence it eases the Internet-wide multicast deployment.

Journal of Information Processing, 2013

This paper studies the innovative methodology for developing IT education from the traditional fa... more This paper studies the innovative methodology for developing IT education from the traditional face-to-face model to full capability of distance learning by combining a remote computer laboratory and a distance e-learning environment. There are three approaches presented with different implementations of laboratory technologies and learning models. The design challenge is to address the limitations of resources at region-wide learning sites, cost-effectiveness and scalability. Computer virtualization and StarBED computing testbed can achieve a larger scale of laboratory size with less cost of equipment and administration workload. The live learning environment ensures quality of realtime communications during lecture and lab sessions by employing IPv6 Multicast on a satellite UDLR network. The self-paced learning environment is proposed to enable a flexible schedule, resource reusability, and scalability. The lab supervision system is the key component to enhance teaching effectiveness in the self-paced hands-on practice by systematically automating the lab supervision skills of lecturers. These approaches have been evaluated as feasible, cost-effective and scalable by the real implementations of similar Asia-wide workshops. Trade-off overheads and analysis on technology and pedagogy perspectives are made to compare their characteristics.

2007 International Symposium on Applications and the Internet Workshops, 2007

This paper discusses the problems of conducting a real-time workshop, where the instructors and t... more This paper discusses the problems of conducting a real-time workshop, where the instructors and the participants are located in different places, and the participants should perform hands-on lab exercises using computers that are located in another place. To address ...

Abstract: IT education in Asia is limited due to the shortage of IT lecturers and lack of equipme... more Abstract: IT education in Asia is limited due to the shortage of IT lecturers and lack of equipments for hands-on exercise. Distance learning is insufficient to solve the problem because 1) It commonly supports lecture but not computer-based hands-on exercise 2) Quality of Internet in Asia ...

This paper presents a method to monitor information of a large-sized multicast group that can fol... more This paper presents a method to monitor information of a large-sized multicast group that can follow the group's dynamics in realtime while avoiding feedback implosion by using probabilistic polling. In particular, this paper improves the probabilistic-polling-based approach by deriving a reference mean value as the reference control value for the number of expected feedback from the properties of a binomial estimation model. As a result, our method adaptively changes its estimation parameters depending on the feedback from receivers in order to achieve a fast estimate time with high accuracy, while preventing the possible occurrence of feedback implosion. Our experimental implementation and evaluation on PlanetLab showed that the proposed method effectively controls the number of feedback and accurately estimates the size of a dynamic multicast group.

TELKOMNIKA Telecommunication Computing Electronics and Control, 2018

High-resolution imagery taken from Unmanned Aerial Vehicle (UAV) is now often used as an alternat... more High-resolution imagery taken from Unmanned Aerial Vehicle (UAV) is now often used as an alternative in monitoring the agronomic plants compared to satellite imagery. This paper presents a method to identify Citronella among other plants based on UAV imagery. The method utilizes Support Vector Machine (SVM) to classify Citronella among other plants according to the extraction of texture feature. The implementation of the method was evaluated using two group of datasets: 1) consists of Citronella, Kaffir Lime, other green plants, vacant soil, and buildings, and 2) consists of Citronella and paddy rice plants. The evaluation results show that the proposed method can identify Citronella on the first group of datasets with an accuracy 94.23% and Kappa value 88.48%, whereas on the second group of datasets with an accuracy 100% and Kappa value 100%.