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This paper presents the development of DOM, a mobile big data analytics engine for mining Thai public opinions. The engine takes in data from multiple well-known social network sources, and then processes them using MapReduce, a keyword-based sentiment analysis technique, and an influencer analysis algorithm to determine public opinions and sentiments of certain topics. The system was evaluated its...
From the time of early exploration in the area of programming languages, many tools have been employed to introduce novice programmers to programming. The most common tools entail flowchart-based notation as well as programming environments based on icons. More research in this field has revealed that the lack of problem-solving skills, which is considered as one of the prominent shortcomings that...
Image segmentation is a process that significantly important for machine vision system such as automatic fruit grading system. This process separates an image into several areas to extract the interest object from its background. However, the segmentation task is difficult for isolating the images that captured in outdoor environment. This is due to the existence of non-uniform illumination on the...
Digital mammogram has become the most effective technique for early breast cancer detection. The most common abnormality that may indicate breast cancer is masses. The challenge lies in early and accurate detection to overcome the development of breast cancer that affects more and more women throughout the world. Computer Aided Diagnosis (CAD) is used to help the radiologist in interpretation and...
In this paper, we construct a probability distribution for flight departure delay durations. The probability distribution is developed by fitting historical departure delay data of an airline to a number of probability distributions. Then, we choose the most fitted model by applying two-stage Genetic Algorithm. In the first stage, the algorithm works for maximizing log-likelihood function, and then...
Fast track analysis for Attendance Management System (AMS) is designed to facilitate the lecturer in monitoring student attendance during lecture session. Monitoring attendance is crucial especially for large group of students. Lecturers have difficulties to verify student's attendance during class and would take up some time. Error in key in the attendance into the system is also likely when transferring...
The ultrasonic range meter measures the distances separating obstacles from a reference point based on ultrasonic waves. Like the LIDAR (Laser Imaging Detection and Ranging), this project is desired to measure the distance as well as the laser angle in order to localize the surrounding objects. Unlike LIDAR and all available range meters, this new low cost design can measure the distances using one...
Wireless Sensor Network (WSN) have emerged as an important area for research and development because of their application such as in e-healthcare monitoring system. This paper presents and discusses the performance of slotted and unslotted Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol WSN for medical system, with a few additions to the protocol and adequate tuning parameters...
In recent years the usage of the Internet and the hosting of virtual machines in a data center have been increasing in a dramatic manner which leads to IPv4 address depletion issue. Consequently, the transition from IPv4 to IPv6 has become inevitable and fairly urgent. Software-Defined Networking (SDN) is one of the recently emerging networking paradigm which separate the control and data plane logic...
Square root calculation is an important operation in digital signal processing. A parallel architecture design for predictive square root algorithm is introduced. It is a parallel version of our previous research of iterative square root algorithm architecture. This parallel design can produce square root and remainder values directly without any additional corrections and without any registers. It...
In wireless sensor networks (WSNs), information carried in data sensor is very important for everyone, especially for critical data such as disaster warning, location based in military, and other high-risk data. Wireless Body Area Network (WBAN) which informs data sensor of body status, such as blood pressure, electrocardiogram, air-flow of breathing, body temperature, patient position and falls,...
Image processing plays an important role in extracting useful information from images. However, the image processing and the process of translating an image into a statistical distribution of low-level features is not an easy task. These tasks are complicated since the acquired image data often noisy, and target objects are influenced by lighting, intensity or illumination. In the case of flower classification,...
Medical data (i.e., medical image and medical record) is private which should be protected before being transferred or stored. There have been some methods proposed by implementing various algorithms, such as steganography. It is sometimes combined with the shared secret method, so that, the reconstruction of the original data must be done by some users. It is believed that this method increases the...
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