Naresuan University Journal
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The Performance Comparison of Models for Predicting the Risk of Losing Student Loan by Fuzzy Neural Network Method and Multiple Linear Regression Analysis Method
No full text This research presents the comparing the performance of the prediction model of the risk of losing student loan by Fuzzy Neural Network (FNN) and Multiple Linear Regression Analysis (MLR) . We used the preparation of 296 samples, assigned the income variables, which are characterised by Fuzzy attribute and had problem-solving with Dummy variables. Also, we proposed the method of converting fuzzy data by making a fuzzy attribute matching of Neural Network (NN) and Multiple Linear Regression. It calculates the fuzzy linguistic term, the fuzzy language and the Crisp value, and after that have filtered variables with Pearson correlation technique and multiple linear regression which get eight independent variables and RiskForPay is a dependent variable. Results from this research, the appropriate model of Fuzzy Neural Network is a division of learning data, and cross-validation fold is 5 with an accuracy of 83.33% +/- 6.02% which models have 8-5-6 structure, momentum 0.2 and learning rate 0.3. The predictive model with multiple linear regression equations has Root Mean Squared Error: 1.513 +/- 0.000 and Squared Correlation: 0.081, respectively.
Keywords: Fuzzy Neural Network, Multiple Linear Regression Analysis, Student Loan, Fuzzy logi
Antioxidant Activity and Effect of Sa-khan (Piper, Piperaceae) on the Normal Human Proximal Tubular Epithelial Cell Line
Get PDF The oxidative damage to proximal tubular epithelial cells may lead to renal dysfunction. This research aimed to investigate antioxidant activity of the Sa-khan crude extract (SCE) and evaluated its effect on cell viability of proximal tubular epithelial cells. The total phenolic content of the SCE was determined using Folin-Ciocalteu method. The free radical scavenging activity of the SCE was investigated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay. The effect of the SCE on HK-2 cells, the human proximal tubular epithelial cell line, was investigated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The SCE showed the total phenolic content of 17.35 ± 0.40 mg GAE/g extract. In addition, the SCE exhibited scavenging activity on DPPH (IC50 = 1.15+0.071 mg/mL). Moreover, eleven spots of antioxidant compounds were detected when the two-dimensional thin-layer chromatography combined with the DPPH spray technique was performed. Furthermore, the SCE at the concentration of 0.125 mg/mL could promote the proliferation of HK-2 cells over various durations. Together, these results indicate that the SCE may contain compound(s) with potential health benefits.
Keywords: Sa-khan, normal human proximal tubular epithelial cell, antioxidant activit
Determinants of Electronic Word-of-Mouth among Line Users in Thailand
Get PDF Electronic Word-of-Mouth (eWOM) plays an important role as a new marketing tool in many countries nowadays. eWOM has been used through social media such as Facebook, Instagram, etc. eWOM in social media allows a continuous connection to a broad audience. Line application is the latest social media introduced in 2011. This study thus explored factors impacting on the eWOM intention via Line application which is a famous social media used, especially in Thailand. The four factors (user preference, user similarity, user interaction and user concern for others) drawn from Consumer Behaviors theory and two factors (ease of use, and usefulness) drawn from Technology Acceptance Model (TAM) theory were used in this study. The samples of 196 respondents were collected by using convenience sampling method via Google form survey. Multiple regression with stepwise method was used to analyze the data. The results showed that user preference, Line ease of use and Line usefulness have positive relationship with eWOM, while user similarity, user interaction and user concern have no relationship with eWOM. For theoretical contribution, the study expanded the application of TAM to explore the changing consumer behaviors and eWOM. For managerial implication, this study could help marketer develop marketing strategies that allow businesses to build on communication platform.
Keywords: Electronic Word-of-Mouth, Consumer Behaviors Theory, Technology Acceptance Theory, Line Applicatio
Factors Affecting Technical Efficiency of Textiles Community Enterprises in Chaloem Phra Kiat and Na Pho Districts, Buriram Province, Thailand
No full text This study aims to study technical efficiencies and factors affecting technical efficiency of 29 textiles community enterprises in Chaloem Phra Kiat and Na Pho Districts, Buriram Province. Population of this study are three members each from 29 enterprises groups: one leader and two members, 87 people in total. Data Envelopment Analysis (DEA) performance was used to explain Input-Oriented; i.e. Machine Value, Members of Enterprise Group, Value of Main Materials and Production Cost, and Total Income being the Output under the assumption of Variable Return to Scale (VRS). Analysis of factors affecting technical efficiency of textile community enterprises was explained by Tobit Model. The result showed that 70% of the textile enterprises in Chaloem Phra Kiat and Na Pho Districts, Buriram Province currently faced technical inefficiency due to inappropriate resource allocations. Factors affecting technical efficiency are proportion of capital per labor, location, leader’s experience and types of product. This study can benefit the textile community enterprises as guidelines for improving production and management for higher efficiency in future.
Keywords: Technical Efficiency, Data Envelopment Analysis (DEA), Textiles Community Enterprises, Tobit Mode
Knowledge, Attitude, and Practice of Pranic Healing in Bhutan
No full text Pranic healing (PH) is a non-touch complementary therapy that uses energy (prana) for healing ailments. In Bhutan, PH’s healers and clients have grown since it first began in 2012. This study explores the knowledge, attitude, and practice of PH in Bhutan due to the lack of prior scientific studies. The data in this study came from 150 clients and 50 healers. Respondents were selected using the simple random sampling technique from the Pranic Healing Centre’s list of patients and healers. Data were collected via online and face-to-face surveys using pretested semi-structured questionnaires. Quantitative data, including frequencies and percentages, were analyzed descriptively, while content analysis was used for analyzing answers from open-ended questions. Patients with psychiatric disorders have mostly availed PH. Many clients have also availed PH for general cleansing and ailments of nonspecific symptoms like body pain. Although some respondents have a wrong understanding of PH, respondents reported a positive attitude toward PH. People practiced PH because it is effective as a complementary treatment. Increasing accessibility through increasing PH centers, healers, and awareness could improve PH culture in Bhutan.
Keywords: Alternative Healing, Complementary Therapy, Pran