S
Sajjakaj Jomnonkwao
Researcher at Suranaree University of Technology
Publications - 66
Citations - 858
Sajjakaj Jomnonkwao is an academic researcher from Suranaree University of Technology. The author has contributed to research in topics: Poison control & Computer science. The author has an hindex of 10, co-authored 41 publications receiving 412 citations. Previous affiliations of Sajjakaj Jomnonkwao include Pibulsongkram Rajabhat University.
Papers
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Projection of future transport energy demand of Thailand
TL;DR: In this article, the authors developed log-linear regression models and feed-forward neural network models, using the as independent variables national gross domestic product, population and the number of registered vehicles.
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Trends in Thailand CO2 emissions in the transportation sector and Policy Mitigation
TL;DR: In this paper, the authors predict the amount of CO2 emissions from energy use in Thailand's transportation sector as well as related factors, thus providing a substantial benefit to determine policies for reducing GHG emissions and its impacts.
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Measurement modelling of the perceived service quality of a sightseeing bus service: An application of hierarchical confirmatory factor analysis
TL;DR: In this paper, the authors examined the sightseeing tour buses' service quality factors according to 27 parameters applied as criteria for evaluating and improving service data were gathered from 3387 teachers and educational staff involved with educational field trips.
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Temporal stability of factors influencing driver-injury severities in single-vehicle crashes: A correlated random parameters with heterogeneity in means and variances approach
Chamroeun Se,Thanapong Champahom,Sajjakaj Jomnonkwao,Ampol Karoonsoontawong,Vatanavongs Ratanavaraha +4 more
TL;DR: In this paper, the authors investigated the temporal instability of contributing factors of driver-injury severities in single-vehicle crashes using data in Thailand, a developing country, from 2011 to 2017.
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The complex relationship between school policy, service quality, satisfaction, and loyalty for educational tour bus services: A multilevel modeling approach
Vatanavongs Ratanavaraha,Sajjakaj Jomnonkwao,Buratin Khampirat,Duangdao Watthanaklang,Pawinee Iamtrakul +4 more
TL;DR: In this paper, the authors applied a multilevel SEM technique to investigate a research question that had not been previously studied and found that service quality has a positive influence on satisfaction, which was found to be significantly and positively related to loyalty at both the individual and school levels.