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Open Innovations for Tourism Logistics Design: A Case Study of a Smart Bus Route Design for the Medical Tourist in the City of Greater Mekong Subregion

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Journal of Open Innovation: technology, Market, and Complexity 2022年第4期8卷

作者： Ngeoywijit, Sumalee Kruasom, Tawamin Ugsornwongand, KiengKwan Pitakaso, Rapeepan Sirirak, Worapot Nanthasamroeng, Natthapong Kotmongkol, Thachada Srichok, Thanatkij Khonjun, Surajet Kaewta, Chutchai Department of International Business Management Faculty of Management Science Ubon Ratchathani University 85 Sathonlamark Muang SriKai Warin Chamrap Ubon Ratchathani 34190 Thailand Department of Financial and Investment Faculty of Management Science Ubon Ratchathani University 85 Sathonlamark Muang SriKai Warin Chamrap Ubon Ratchathani 34190 Thailand Artificial Intelligence Optimization SMART Laboratory Department of Industrial Engineering Faculty of Engineering Ubon Ratchathani University 85 Sathonlamark Muang SriKai Warin Chamrap Ubon Ratchathani 34190 Thailand Department of Industrial Engineering Faculty of Engineering Rajamangala University of Technology Lanna Chiang Rai 50300 Thailand Artificial Intelligence Optimization SMART Laboratory Department of Engineering Technology Faculty of Industrial Technology Ubon Ratchathani Rajabhat University 2 Ratchathani Nai Muang Ubon Ratchathani 34000 Thailand Department of Logistics Management Faculty of Industrial Technology Ubon Ratchathani Rajabhat University 2 Ratchathani Nai Muang Ubon Ratchathani 34000 Thailand Artificial Intelligence Optimization SMART Laboratory Department of Computer Science Faculty of Computer Science Ubon Ratchathani Rajabhat University 2 Ratchathani Nai Muang Ubon Ratchathani 34000 Thailand

One of the industries with the fastest growth rates worldwide, and notably in Thailand, is medical tourism. With connections to Cambodia and Laos, Ubon Ratchathani is located in lower northeastern Thailand, close to Vietnam and Myanmar. Therefore, there is a significant chance that this region will welcome medical travelers. High-quality medical facilities are available in Ubon Ratchathani to fulfill the needs of medical tourists. A visitor’s decision to travel to Ubon Ratchathani for medical treatment is influenced by factors other than the high-level medical facilities, such as lodging, accessibility to public transportation, and tourist attractions. The public transportation services in Ubon Ratchathani, especially the public bus system, are poorly designed and may let down visitors. The purpose of this study is to develop a smart public bus route design that will meet tourists’ demands. The concept of open innovation will be utilized to develop the model. We surveyed 400 visitors to Ubon Ratchathani. The tourists’ opinions and views of public transportation will be made public and used as an input parameter when designing bus routes. The bus route can then be constructed using the differential evolution algorithm (DE). A web-based smart public transportation system was built. In order to construct an efficient smart public bus system (SPBS), open innovation was used in the development phase. According to the computational results, the new routes using DE lead to a 5.97% reduction in travel distance when compared to the output of the more well-known genetic method. More than 98.5% of visitors are satisfied with the new routes, and once they start running, 99.5% of all respondents plan to use public transit. © 2022 by the authors.

关键词： differential evolution algorithm environmentally friendly GPS monitoring public transportation system SMART bus system

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Catalytic conversion of palm oil into sustainable biodiesel using rice straw ash supported-calcium oxide as a heterogeneous catalyst: Process simulation and techno-economic analysis

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Case Studies in Chemical and Environmental engineering 2023年 8卷

作者： Saetiao, Phonsan Kongrit, Napaphat Cheng, Chin Kui Jitjamnong, Jakkrapong Direksilp, Chatrawee Khantikulanon, Nonlapan Petroleum Technology Program Industrial Technology Department Faculty of Industrial Education and Technology Rajamangala University of Technology Srivijaya 2/1 Rachadamnoennork Rd. Boryang Muang Songkhla 90000 Thailand Center for Catalysis and Separation Department of Chemical Engineering College of Engineering Khalifa University Abu Dhabi United Arab Emirates Institute of Functional Interfaces (IFG) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen Karlsruhe 76344 Germany Department of Environmental Health Faculty of Public Health Valaya Alongkorn Rajabhat University Under the Royal Patronage Khlong 1 Khlong Luang Pathum Thani 10120 Thailand

This study aimed to optimize the process parameters and evaluated economic feasibility for biodiesel production. A pyrolytic rice straw ash (RSA) support with various amounts of calcium oxide (25–35 wt%) and calcination temperatures (600–800 °C) were used in the study. The results identified 35 wt% of CaO/RSA and calcination at 600 °C as the most effective catalyst with turnover frequency (TOF) of 2.88 h⁻¹ for biodiesel synthesis, giving a biodiesel yield of 96.49%. The optimal conditions for biodiesel production included a methanol: palm oil molar ratio of 9.34:1, a catalyst loading of 4.87 wt%, 175 min reaction time, and 65 °C reaction temperature. The study also included a techno-economic analysis of biodiesel production, revealing a payback period of 7.17 years, an internal rate of return of 17.20%, and a net present value of 4,151,905.61 USD. These findings pave the way for more sustainable and economically feasible biodiesel production. © 2023

关键词： Biodiesel Environmental analysis Process optimization Rice straw ash Techno-economic analysis

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The development of guidelines on promoting bicycle use for tourism in Khao Yai National Park

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Lowland technology International 2019年第4期20卷 492-498页

作者： Watthanaklang, D. Ratanavaraha, V. Program of Construction Technology Faculty of Industrial Technology Nakhon Ratchasima Rajabhat University 340 Suranarai Road Nai-Muang Nakhon Ratchasima30000 Thailand School of Transportation Engineering Institute of Engineering Suranaree University of Technology 111 University Avenue Suranaree Sub-district Muang District NakhonRatchasima30000 Thailand

At present, bicycle use for both health and tourism is supported but it is found that most Thai people do not popularly use bicycles. This study aimed to seek for the factors promoting Thai people to use bicycles by choosing KhaoYai National Park, where there are a large number of tourists, to be studied with the application of the Theory of planned behavior-TPB. The factors, which were considered, included Attitude, Subjective norm, Perceived behavioral control, and Additional factors which were the factor of infrastructure, and number of bicycle possession in the family. The data used in this study were 429 Thai tourists. The data analysis was done by using Structural Equation Modeling. From data analysis, it was found that Perceived behavioral control, Subjective norm, and Attitude influenced behavioral intention in bicycle use at statistical significance 0.01. For Infrastructure, and number of bicycle possession in the family, they positively influenced behavioral intention in bicycle use in KhaoYai National Park at statistical insignificance. This study can be used as guidelines for the government or involved organizations to determine the pertinent policies on promoting bicycle use. © 2019 International Association of Lowland technology. All rights reserved.

关键词： Bicycles

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Analysis of appropriate overtaking position under equal block lengths

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Lowland technology International 2019年第4期20卷 483-491页

作者： Sangphong, O. Siridhara, S. Ratanavaraha, V. Program of Construction Technology Faculty of Industrial Technology Nakhon Ratchasima Rajabhat University 340 Suranarai Road Nai-Muang Nakhon Ratchasima30000 Thailand Department of Electrical Engineering Institute of Engineering Mahidol University Salaya Nakhon Pathom73170 Thailand School of Transportation Engineering Institute of Engineering Suranaree University of Technology 111 University Avenue Suranaree Sub-district Muang District Nakorn Ratchasima30000 Thailand

This paper studies train passing operation and determine line capacity by checking minimum headway. The analysis is based on the blocking time model displayed on the time space diagram where minimum headway and minimum waiting time are calculated. The study found that the capacity is affected by the number of blocks and the overtaking block position. The graph between the overtaking position and capacity is symmetrical, in which capacity is reducing when the overtaking position is far from the center of the line. The overtaking position that maximizes capacity is not affected by speed nor block length. In the case of even number of blocks, the appropriate location to overtake is (n / 2) +1 while in case of odd number of blocks, the overtake position is at (n+1)/2 and (n+3)/2. Both positions maximize the line capacity for each case. In addition, when the block length was reduced the capacity increased and decrease dwell time. © 2019 International Association of Lowland technology. All rights reserved.

关键词： Block length Blocking time Capacity railway Minimum headway Overtake

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The study of willingness to pay for bicycle hire services at tourist attractions in Thailand

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Lowland technology International 2019年第4期20卷 512-520页

作者： Watthanaklang, D. Ratanavaraha, V. Jomnonkwao, S. Boonyoo, T. Nambulee, W. Program of Construction Technology Faculty of Industrial Technology Nakhon Ratchasima Rajabhat University 340 Suranarai Road Nai-Muang Nakhon Ratchasima30000 Thailand School of Transportation Engineering Institute of Engineering Suranaree University of Technology 111 University Avenue Suranaree Sub-district Muang District NakhonRatchasima30000 Thailand King Mongkut's University of Technology Thonburi 126 Pracha-U-Thit Road Bangmod Thungkru Bangkok10140 Thailand

Bicycles offer non-motorized transport that not only reduces energy consumption and pollution but also offers health benefits. However, most Thai people do not use bicycles. This study investigates the willingness to pay (WTP) for bicycle hire at tourist attractions in Thailand, which can inform strategies that encourage more Thai people to use bicycles. Data analysis considered socio-economic factors, such as gender, age, and level of education, average household income per month, type of tourist attraction, frequency of bicycle use, and type of bicycle. The analyses included the independent sample t-test and analysis of variance F-test. The samples for the analysis comprise 704 Thai tourists. From the results, it was found that WTP for bicycle hire between respondents’ gender for the age groups lower than 18 years and between 30–44 years was different. For type of bicycle, the differences were at statistical significance 0.05. The group having WTP for bicycle hire at a confidence level of 95% shared the same level of education, Average household income per month, frequency of bicycle use, and type of tourist attraction were not different. Government sectors or involved organizations can use this study to inform guidelines around suitable bicycle hire for target groups. © 2019 International Association of Lowland technology. All rights reserved.

关键词： Bicycles

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Effect of oxygen plasma treatment on ITO nanorods films prepared by glancing angle deposition

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AIP Conference Proceedings 2020年第1期2279卷

作者： P. Nuchuay W. Promcham C. Laongwan T. Chaikeeree S. Limwichean P. Eiamchai V. Pattantsetakul N. Nuntawong C. Chananonnawathorn C. Oros P. Songsirirtthigul M. Horprathum Program of Industrial Electrical Technology Faculty of Science and Technology Suratthani Rajabhat University Muang Surat Thani 841000 Thailand School of Energy Environment and Materials King Mongkut’s University of Technology Thonburi Bangkok 10140 Thailand National Electronics and Computer Technology Center Pathum Thani 12120 Thailand Faculty of Liberal-arts Rajamangala University of Technology Rattanakosin Nakornpathom 73170 Thailand Research Network NANOTECH-SUT on Advanced Nanomaterials and Characterization School of Physics Suranaree University of Technology Nakhon Ratchasima 30000 Thailand

The effect of oxygen (O2) plasma treatment on indium doped tin oxide (ITO) nanorods films prepared by the ion-assisted electron-beam evaporation with the glancing-angle deposition technique (GLAD) were investigated. The ITO nanorods films were plasma treated in oxygen ambient at different O2 flow rates in the range of 20-100 sccm. The physical microstructures have been investigated by grazing-incident X-ray diffraction (GIXRD) and field-emission scanning electron microscopy (FE-SEM). The electrical and optical properties were characterized by four-point probe measurements and UV-VIS-NIR spectrophotometry, respectively. The results showed that all the ITO nanorods films exhibited as bixbite structure. The morphology of as prepared films showed vertically aligned nanocolumnar with diameter of 50-63 nm cause of the shadowing effect and limited adatom diffusion. In addition, the influence of O2 plasma treatment on electrical and anti-reflection with omnidirectional property of ITO nanorods films were systematically evaluated and discussed in this paper.

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A Wideband Printed Monopole Antenna with a Co-Planar Waveguide Feeding

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IOP Conference Series: Materials Science and engineering 2020年第1期965卷

作者： Chanapon Surin Duangarthit Srimoon Jhirat Mearnchu Student in Master of Electrical and Computer Engineering Program College of Engineering Rangsit University 52/347 MuangAke Phaholyothin Road Lakhok Pathumthani 12000 Thailand. Faculty of Computer Engineering College of Engineering Rangsit University 52/347 MuangAke Phaholyothin Road Lakhok Pathumthani 12000 Thailand. Department of Electrical Engineering Faculty of Engineering and Industrial Technology Silpakorn University 6 Rajamankha Nai Road Muang Nakornpathom 73000 Thailand.

A wideband printed monopole antenna with a co-planar waveguide feeding is presented. This antenna provides a frequency range of 1.7 – 6.0 GHz. It is a flat conductor on FR4 printed circuit board. The shape of ground and pole are rectangle that the 2 corners near the feeding point are 25 degree chamfered, symmetrically. The ground is etched to form a co-planar waveguide for feeding. For this work, the antenna is simulated by using computer program before fabricating a prototype. The antenna provides an omni-directional radiation same as donut shape at the low frequency of the operating band. The radiation pattern is change when the frequency is shift to high but still omni-direction. The bandwidth of the antenna is 112% between 1.7 GHz and 6.0 GHz with the reflection coefficient less than -10 dB across the band. Gains of the antenna are 2.3, 4.9, and 3.4 dBi at the frequencies of 1.8, 3.8, and 5.8 GHz, respectively. They are the 3 points of low-, central- and high-frequency of the operating band. The size of the antenna is 70.0 × 40.0 mm2. Advantages of the antenna are wideband, low profile structure, light weight, and can be fabricated by FR4 make it low-cost.

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A Dual-Band Printed Dipole Antenna for Unidirectional Radiation

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IOP Conference Series: Materials Science and engineering 2020年第1期965卷

作者： Sompongpinit Suwanachart Duangarthit Srimoon Jhirat Mearnchu Student in Master of Electrical and Computer Engineering Program College of Engineering Rangsit University 52/347 MuangAke Phaholyothin Road Lakhok Pathumthani 12000 Thailand. Department of Computer Engineering College of Engineering Rangsit University 52/347 MuangAke Phaholyothin Road Lakhok Pathumthani 12000 Thailand. Department of Electrical Engineering Faculty of Engineering and Industrial Technology Silpakorn University 6 Rajamankha Nai Road Muang Nakornpathom 73000 Thailand.

This paper presents a dual-band printed dipole antenna for unidirectional radiation. The antenna is designed for the Wireless Local Area Network (WLAN) system that operating on both the frequency ranges of 2.400 – 2.483 GHz and 5.15 – 5.85 GHz. Radiated elements of the antenna are flat conductors on the surface of FR4 printed circuit board. All elements are on the same side of FR4. Coaxial line is chosen for feeding. It makes the antenna good matching and easy to assembly. The antenna is simulated by computer program before fabricating a prototype. It provides omni-directional radiation but has a direction with the gain about 5 dBi at the central of both operating frequencies. It is appropriate for the system that desired the signal to radiate surround but has some direction together. The size of the antenna is 44.0 × 60.0 mm2. Advantages of the antenna are low profile structure, light weight, and can be fabricated with cheap material. So, it is a low-cost antenna.

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A compact All-NPN fully-differential ladder log-companding filter

A compact All-NPN fully-differential ladder log-companding f...

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2012 9th International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information technology, ECTI-CON 2012

作者： Chanapromma, Chaiyan Pookrongtong, Nattapon Mahattanakul, Jirayuth Faculty of Industrial Technology Uttaradit Rajabhat University Muang Uttaradit Thailand Faculty of Industrial Technology Buriram Rajabhat University Muang Buriram Thailand Faculty of Engineering Mahanakorn University of Technology Nong-Chok Bangkok Thailand

ISBN: (纸本)9781467320245

This paper presents compact structure of the ladder-based upon fully-differential Log-companding filter in [14]. The proposed filter structure is based on the exponential-state-space integrators with compatible input and output voltage levels. Based upon the proposed structure, the derivation of the all NPN-only 3rd-order fully-differential Log-companding Chebyshev low-pass filter is demonstrated. Simulation results of the demonstrated filters are given. © 2012 IEEE.

关键词： Ladders

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Design of Low Input and High Output Impedance Current-mode Biquad Filter Using CDTAs with Independent Control of Quality Factor and Pole Frequency

Design of Low Input and High Output Impedance Current-mode B...

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International Symposium on Communications and Information Technologies

作者： Somsak Sattanaco Winai Jaikla Piya Supavarasuwat Wipobh Jaikhang Electrical Communication Engineering Faculty of Industrial Education King Mongkut's Institute of Technology Ladkrabang Bangkok 10520Thailand Program in electronic & Computer Engineering Faculty of Industrial Technology Chiangrai Rajabhat University Chiangrai 57100 Thailand

ISBN: (纸本)9781467355797

In this study, a single-input multiple-outputs current-mode analog biquadratic filter, based on current differencing transconducatance amplifier (CDTA) is presented. The proposed filter uses two CDTAs, one resistor and two grounded capacitors, which is well suited for integrated circuit implementation. The circuit simultaneously gives 3 standard transfer functions, namely, lowpass, highpass and bandpass filters with independent control of quality factor and pole frequency by electronic method. By summing of IHP and ILP, the notch filter can be also achieved. Moreover, the circuit possesses low input and high output impedance which would be an ideal choice for current-mode cascading. The PSPICE simulation results are included verifying the workability of the proposed filter. The given results agree well with the theoretical anticipation.

关键词： current-mode CDTA filter integrated circuit analog circuit

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