Kanokmon Rujirakul

• Ph.D. (Computer Science)
• Professor (Assistant Professor) at Nakhon Ratchasima Rajabhat University

This paper propose a novel architecture for ECG recognition to enhance its precision. In this architecture, there are three main steps: 1) pre-processing with Low/High-pass filters for noise mitigation; 2) feature extraction with Discrete Wavelet Transform, Fast Fourier Transform, Autoregressive, and Wave Statistic; and 3) ECG classification with D...

Multimedia services over wireless networking environment have become increasingly popular, especially for the online video streaming services and applications. This research analyzes the performance of video transmission over IEEE 802.11n in term of throughput, delay, and peak signal to noise ratio (PSNR) to find the characteristics of video stream...

Principal Component Analysis (PCA) is one of the feature extraction techniques, commonly used in human facial recognition systems. PCA yields high accuracy rates when requiring lower dimensional vectors; however, the computation during covariance matrix and Eigenvalue Decomposition (EVD) stages leads to a high degree of complexity that corresponds...

This paper proposes a novel methodology to mitigate the effect of unbalanced known nodes' positions for location ap-proximation in wireless sensor networks. In a practical deploy-ment, some nodes may not properly be in uniform places, and per-haps, due to unequal power consumption of large-scale networks while performing sensing, computing, and tra...

This paper investigates the effect of fuzzy inputs, i.e., signal strength, of various known nodes, to fuzzy logic systems in order to derive a proper weight for Centroid, properly used to approximate the location in wireless sensor networks with its key advantage on simplicity but with precision trade-off. Due to a fluctuation behavior of location...

The objective of this paper is to assess the feasibility of an alternative approach to collect water information relating to flooding crisis by means of a small drone. This information includes aerial images, their geographic locations, water flow velocity and its direction, all of which are normally difficult to obtain and in fact expensive should...

Recent advances in wireless sensor networks have been applied in a variety of applications, including environment, healthcare, and military, based on their distinctive characteristics, such as being small in size and including self-organizing sensor nodes with multi-sensing capabilities and cost-effective monitoring, but there are still a number of...

Cardiovascular disease is a serious threat to human life, especially when a sudden attack occurs, so real-time patient monitoring is crucial. Recent advances in health care and technology have led to equipment such as mobile micro-electro-mechanical systems, which can be used for more accessible public healthcare services. Electrocardiogram (ECG) d...

The performance of face recognition has been improved over the past; however, there remain some limitations, especially with noises and defects, such as occlusion, face pose, expression, and, in particular, cosmetic makeup change. Recently, the makeup has directly impacted on face characteristics, e.g., face shape, texture, and color, perhaps leadi...

Due to advances in technology and size reduction of portable mechanical and electronic devices, sensors have been involved in many sectors, including in agriculture, where sensors and their unique functionalities are extremely useful for both productivity gains and reducing operating costs. These benefits are attained by utilizing their real-time s...

With high performance characteristic in recognition precision, Principal Component Analysis is widely used in face recognition systems; however, the computational time may be huge, especially during Eigen Vector Decomposition of high matrix and vector manipulation operations in addition to a precision effect on multi-expression of human faces. Thus...

This paper presented a new methodology to determine the population, a set of feasible paths, chromosomes of genetic algorithms (GA) given multi-constraints, i.e., distance, deadline, and budget, in a shortest path and modified vehicle routing problem. Several aspects of GA have been explored and optimized including population generation, crossover,...

Due to a rapid growth of Internet, the number of network attacks has risen leading to the essentials of network intrusion detection systems (IDS) to secure the network. With heterogeneous accesses and huge traffic volumes, several pattern identification techniques have been brought into the research community. Data Mining is one of the analyses whi...

Principal component analysis or PCA has been traditionally used as one of the feature extraction techniques in face recognition systems yielding high accuracy when requiring a small number of features. However, the covariance matrix and eigenvalue decomposition stages cause high computational complexity, especially for a large database. Thus, this...

For years, the cardiovascular disease has severely endangered the human life. One key point of all critical cares is to continuously monitor whoever is in a high-risk of sudden attack, and to immediately alert for professionally on-time aids. Thus, in this research, a novel architecture to aid patients to be with caretakers wherever and whenever th...

Recent advances in wireless sensor networks have led to feasibility in implementing a variety of reliable and distributed monitoring and controlling systems used in several areas including environment, healthcare, civil, and military applications. The introduction to novel protocols and their improvements, especially for energy consumption awarenes...

With a high computational complexity of encryption algorithm, AES, especially for huge real-time data, GPU has recently offered an alternate computational system instead of a traditional CPU (thread), incurring a significant improvement in speeding up the computational intensive parallel data encryption in various aspects -tremendous number of proc...

With a high computational complexity of Eigenvector/Eigenvalue calculation, especially with a large database, of a traditional face recognition system, PCA, this paper proposes an alternative approach to utilize a fixed point algorithm for EVD stage optimization. We also proposed the optimization to reduce the complexity during the high computation...

Advances in technology have a great impact on human society not only in education and entertainment, but even medical and agriculture sectors. Smart farming amalgamates this in order to enhance productivity and cut the operation cost. Thus, in this paper, we propose a novel smart system based on poultry farming over EVAP systems by utilizing mobile...

With a high computational complexity of Eigenvector/Eigenvalue calculation, especially with a large database, of a traditional face recognition system, PCA, this paper proposes an alternative approach to utilize a fixed point algorithm for EVD stage optimization. We also proposed the optimization to reduce the complexity during the high computatio...

Toward the advances of wireless sensor technology have allowed users/administrators to simply and accurately monitor a characteristic and a behavior of remote environment including automatic event trigger. Due to the fact that the limitation of energy resource of sensor nodes, any events should be aware of this constrain, and so dividing the nodes...

This paper introduces a new mobile phone system architecture to aid the blind in travelling. The architecture has four main units: voice/speech recognition, Global Positioning System (GPS) and map services, ultrasonic sensor, and image processing service. These four subsystems function simultaneously within a single mobile device using web service...

This paper introduces a new mobile phone system architecture to aid the blind in travelling. The architecture has four main units: voice/speech recognition, Global Positioning System (GPS) and map services, ultrasonic sensor, and image processing service. These four subsystems function simultaneously within a single mobile device using web service...