Language：English   Publishing type：Research paper (scientific journal)   Publisher：EMERALD GROUP PUBLISHING LTD  

Purpose: For several decades, calligraphy has been popular among people in Japan, China, and even in the world. Traditionally, a teacher teaches how to write letters on a paper with a brush, and a student will imitate them by referring to the model letters. However, if a teacher is not available, this method will not be applicable either. This study aims to propose a calligraphy learning assistant system (CLAS) using projection mapping, which allows a student to learn calligraphy by him/herself. Design/methodology/approach: By following the letter writing video of a teacher that is directly projected on the paper, a student is able to learn the stroke order and writing speed in addition to the letter shape. Moreover, the letter portion practice function is incorporated in CLAS to allow a learner to repeat practicing hard portions of each letter. Findings: For evaluations, the authors implemented CLAS using Raspberry Pi and open-source software and asked students to use it. The results confirmed that CLAS is effective in improving calligraphy skills of novice students. Originality/value: With CLAS, a student can practice calligraphy using a conventional brush, ink and paper at a desk while looking at the model letter writing of a teacher projected on the paper using projection mapping.

DOI： 10.1108/IJWIS-07-2019-0032

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

For decades, Calligraphy has been a popular artistic activity in Japan, China, and some countries. To assist its self-learning, we have proposed the Calligraphy Learning Assistant System (CLAS) using projection mapping, where a learner can practice it by following the letter writing video of a teacher projected on the paper. In this paper, we newly implement a letter portion practice function in CLAS, such that learners may practice their weak portions with the video showing the writing by a teacher. It is expected that to repeat practicing weak portions is useful in improving the whole letter writing. Through applications to 12 novice students from Indonesia, Myanmar, China, and Kenya, we confirm the effectiveness of this function, where each student has significantly improved the calligraphy skill.

DOI： 10.1109/ICCE46568.2020.9043042

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Other Link： https://dblp.uni-trier.de/db/conf/iccel/icce2020.html#HudaFKK20

Publishing type：Research paper (international conference proceedings)  

This paper explains about the walking patterns of quadruped robots. This robot was made to be an observer robot. Therefore, being slick in movement is the main feature that must be owned by this robot. As a four-legged robot, the movement (forward, backward, shift left, shift right, rotate) requires an algorithm to control the synchronization movements of each leg. This algorithm consists of several poses (including the body, as well as all legs) and if arranged in sequence it will form a certain pattern of movement. Each leg has 3 DOF. The pose of each leg is represented in the cartesian coordinates (x, y, z axis), while the movement of each joint is represented in angular. It has solved using the inverse kinematics formula which is useful for converting leg coordinates into angular for each leg joint. By defining the walking pattern, the robot can more easily controlled by the direction and speed of its movement.

DOI： 10.1088/1742-6596/1201/1/012010

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

One of the important factors that support the advance of agriculture system is the quality of the soil, which is used as a medium for growing the plant. The soil quality is a fertile soil and able to give a productive harvest. There are several environmental factors which influence the soil conditions, such as temperature, soil humidity, light, pH of the soil, etc. In this paper, we are designing and making the simple prototype of monitoring precision agriculture system using wireless sensor modules. It is accomplished by optimizing the designed communication using Zigbee communication module and other sensor modules. We have several sensors for monitoring the precision agriculture, such as temperature, humidity, pressure, and soil moisture. The result of the measuring experiment shows the agriculture data sensors by real time communication. We also provide the monitoring status via website and smartphone.

DOI： 10.1109/ISITIA.2017.8124103

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Publishing type：Research paper (scientific journal)  

Internet of Things (IoT) has become popular with the development of technology, which allows each physical device identified, managed and recorded by computer. In the context of Wireless Sensor Networks (WSNs), it is important for everyone to know the latest information of the status of human health, for example the condition of the surrounding environment. In the paper, we proposed an implementation of environmental health conditions monitoring through WSN with fuzzy logic that could be monitored in real time anywhere and anytime. In our proposed system, we used a sensor temperature, humidity, Carbon Monoxide (CO) and Carbon Dioxide (CO2), luminosity, noise for node sensors. For decision-making environmental health conditions with fuzzy logic, we have 5 categories, such as Very Good (VG), Good (G), Medium (M), Bad (B) and the last is Dangerous (D). The data were sent from the sensor node to the gateway using ZigBee IEEE 802.15.4 standard. The data received from the sensor node were stored into the database provided by the gateway and to be synchronized with external databases (database server) using TCP/IP. Users can access the data sensor via the website or mobile application such as Desktop, PCs, Laptop, and Smartphones.

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Publishing type：Research paper (scientific journal)   Publisher：{EMITTER} International Journal of Engineering Technology  

DOI： 10.24003/emitter.v4i1.116

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Publishing type：Research paper (scientific journal)   Publisher：{EMITTER} International Journal of Engineering Technology  

DOI： 10.24003/emitter.v4i1.113

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Easy sharing files in public network that is intended only for certain people often resulting in the leaking of sharing folders or files and able to be read also by others who are not authorized. Secure data is one of the most challenging issues in data sharing systems. Here, Ciphertext-Policy Attribute-Based Encryption (CP-ABE) is a reliable asymmetric encryption mechanism which deals with secure data and used for data encryption. It is not necessary encrypted to one particular user, but recipient is only able to decrypt if and only if the attribute set of his private key match with the specified policy in the ciphertext. In this paper, we propose a secure data exchange using CP-ABE with authentication feature. The data is attribute-based encrypted to satisfy confidentiality feature and authenticated to satisfy data authentication simultaneously.

DOI： 10.1109/ELECSYM.2015.7380829

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：TAIWAN ASSOC ENGINEERING & TECHNOLOGY INNOVATION  

Recently, disseminating latest sensory information regarding the status of environmental health in the surroundings of human life is one of very important circumstances which must be known by everyone. These circumstances should be accessible at anytime and anywhere by everyone through any type of end-user devices, both fixed and mobile devices, i.e., Desktop PCs, Laptop PCs, and Smartphones. Wireless Sensor Network (WSN) is one of the networks which deals with data sensors distribution from sensor nodes to the gateway node toward a Data Center Server. However, there is a big possibility for many adversaries to intercept and even manipulate data sensors crossing the network. Hence, a secure data sensor exchange in the system would be strongly desirable. In this research, we propose an environmental health conditions monitoring system through WSN and its implementation with considering secure data sensor exchange within the network and secure data sensor access. This work may contribute to support a part of smart cities and take in part the Internet of Thing (IoT) technology. In our proposed system, we collect some environmental health information such as temperature, humidity, luminosity, noise, carbon monoxide (CO) and carbon dioxide (CO2) from sensor nodes. We keep the confidentiality and integrity of transmitted data sensors propagating through IEEE802.15.4-based communication toward a gateway node. Further, the collected data sensors in the gateway are synchronized to the Data Center Server through a secure TCP/IP connection for permanently storing. At anytime and anywhere, only legitimated users who successfully pass-through an attribute-based authentication system are able to access the data sensors.

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：PENERBIT UTM PRESS  

In Internet of Things (IoT) era, The limitation storage on Wireless Sensor Network (WSN) can be solved by synchronized data sensors from the gateway node to the data center server. Data in the data center can be remotely accessed by the user at any time and anywhere from end user devices such as PCs, laptop PCs, and smart phones., and data should be accessed securely. The Only legitimated user can access the data sensor from an environmental health data center. CP-ABE (Ciphertext-Policy Attribute-Based Encryption) is becoming a robust cryptographic scheme solution to this issue. To enable a secure data sensor sharing and access on an environmental health data center, we propose a secure system model using CP-ABE which ensures confidentiality, integrity, and user privacy features. Experimental results prove that the implementation of CP-ABE does not overload the system.

DOI： 10.11113/jt.v78.8928

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