bluuebunny/crossref_metadata_2025_split huggingface dataset:
Utilizing user-generated content to analyze tours and activities in bangkok: A tripadvisor case study
Authors:   , Chugh Naina 
Published: September 2023

The overarching goal of this paper is to gain visibility on tourist preferences and whether or not the needs of tourists are being met. With the Travel and Tourism (T&T) sector being the backbone to the global economy and the sector becoming more saturated and competitive, insights on T&T are vital now, more than ever. The rise of social media and user-generated content has effectuated the opportunity for a systematic analysis of tourist preferences via user-generated content. This paper is focused on gaining insights into tourism in Bangkok, Thailand through user-generated content scraped from TripAdvisor’s online reviews of tours and activities. In order to develop insights on tourist preferences and tourism trends in Bangkok, various analyses were implemented, including sentiment analysis to gather tourist point-of-view, association rules mining to find patterns of preferences, and natural language processing along with text frequency analysis to understand what features tourists are most frequently talking about. This paper also developed machine learning prediction models using Logistic Regression, Support Vector Machine, and Random Forest algorithms to forecast 5-start ratings and 1-star ratings of reviews – with the purpose of identifying factors that significantly affect positive and negative sentiments on tours/activities.
Forecasting Daily Foreign Tourists for a Tour Operator in Thailand
Authors:   , Niamjoy Pornpawit 
Published: September 2023

Tour operators are playing an important role in the tourism industry which is an essential part of industries for Thailand's economy. Accurate tourist forecasting of daily tourist demands for tour operators is very important in revenue management and planning of tour operators, such as providing a guide or vehicle for each day. This research has presented and compared the forecasting models that will be selected to be suitable for the tour operator for a case-study company. The forecasting models used in this research consist of Seasonal Autoregressive Integrated Moving Average model (SARIMA), Seasonal Autoregressive Integrated Moving Average model with exogenous variables model (SARIMAX), Trigonometric ARMA errors, trend and multiple seasonal patterns (TBATS), artificial neural networks (ANN) and Long Short-Term Memory (LSTM) which is a type of neural network created to process sequential information. Based on the results, which were evaluated by the Mean Absolute Error (MAE) and the Mean Percentage Absolute Error (MAPE), it was found the artificial neural network model is the most suitable for all tours. In testing results with the cross-validation data, the SARIMAX model provides better results on Tour A and B, however it does not have a statistically significant difference with neural networks which using fewer resources. When comparing the testing results with testing data from the artificial neural network model with the same day last year model, which is the method currently used by the case study company, it was found that the predictive errors decrease from 53.37% of MAPE to only 15.89% and from 15.73 of MAE to only 4.437 or decreasing by 71.79%, from 2.50 to 1.684 or 32.64% and from 3.08 to 1.687 or 45.24% for Tours A, B and C, respectively.
A study of factors affecting to long-term relationship of outsourcing
Authors:   , Katato Thitiporn 
Published: September 2023

"Outsourcing" is very important for the organization's strategy to seek to reduce costs and specialize in a limited number of core areas. Thailand is known worldwide as a key outsourcing service provider. To know the factors affecting long-term relationship outsourcing are essential for the business continuities of Business Process Outsourcing (BPO) providers in Thailand. Based on the literature review, this research proposes a model that cooperation, control, and improvement will affect performance and then further affects outsourcing long-term relationship. Using a data set collected from 322 questionnaire surveys through e-mails, and 200 sent to personal to test proposed hypotheses from June 1, 2019, to August 31, 2019. As a result, 219 respondents were used for data analysis (41.95 percent). To confirm hypotheses, this study uses Partial Least Squares (PLS) – a variance-based Structural Equation Modeling (SEM) approach. The results showed that, cooperation has a positive effect on the control. Moreover, cooperation and improvement have positive effects on the performance and performance has a positive effect on outsourcing long-term relationships. This study provides some suggestions to outsourcing suppliers in Thailand to maintain and to extend their outsourcing relationships with their current customers.
Livelihoods training for internally displaced persons (idps) in Kachin state, Myanmar: success and challenges beneficiaries
Authors:   , Lujan Lucia 
Published: September 2023

Over 100,000 persons have been internally displaced from various towns within Kachin State, Myanmar. Starting in 2015, some agencies began providing livelihood support programs for the IDP population in many campsites. This research focuses on the opportunities and challenges faced by Kachin IDPs who receive support from livelihood programs in pursuit of better employment opportunities. Drawing on a qualitative research approach, this research examines two of the most effective livelihood training activities and two less successful livelihood training activities which help IDPs to enhance their employment capacity, increasing their opportunities to receive an income. The livelihood support activities help IDPs to learn new skills and techniques through training. This paper also provides recommendations for livelihood support programs to achieve their long-term goals. There are four main factors that support the effectiveness of IDP livelihood training programs, including long- or short-term time frames to conduct trainings, technical support for skill development, provision of training that is both relevant in the local area and accessible to the local market, and sufficient financial support for trained IDPs after their training. The livelihood support programs must be implemented in consideration of human rights, needs, and strengths, also acknowledging the various contexts of service delivery. The development of policy related to IDP-specific issues needs to invite the participation of the local government and local staff who are experienced in the areas of operation. The livelihood support training programs should be designed as adjustable programs in order to better promote the capacity of IDPs. Furthermore, coordination should be established amongst national organizations, international organizations, local organizations, and other stakeholders to identify the best solutions for promoting employment opportunities for IDPs as each agency possesses different resources which need to be properly allocated for the purpose of IDP capacity building.
Korean wave effect towards growth of Korean food business : Korean BBQ/grilled restaurant in Bangkok, Thailand
Authors:   , Panjavinin Arachaporn 
Published: September 2023

The purpose of this research was to study and analyze The Growth of Korean Grilled restaurant in Bangkok, Nowadays, Korean Barbeque restaurant has increased continuously from the past also gained popularity among Bangkok consumers in different age gap and various occupation then researcher wanted to study about landscape of Korean Barbeque restaurant in Bangkok such location , shop space , taste through interview with owner of Korean Barbeque restaurant that located in different area for various information and made survey of sample group from Bangkok consumer, about factors that led to customer satisfaction, behavior of consumption, expected to find out what factors that made Korean Barbeque restaurant gain a lot of popularity at the present.

Research findings were as follows Korean Wave is an important motivation for attract Thai consumers have more interest in Korean food or has Korean food in one of their selection. Due to increasing demand, led to increase of owners that came to run Korean restaurant business especially Grill restaurant in many different area in Bangkok. However, only Korean Wave through medias isn’t made Korean Grill restaurant business became successful but with maintained standard and quality of food which nearly or similar as original Korean food that can attract customers to visit again and can maintain good status of restaurant for the future.
Social integration of foreign students in Korean higher education : a case study of Southeast Asian student in Seoul National University
Authors:   , Thubsook Supatcha 
Published: September 2023

This study aims to understand social integration of Southeast Asian students who studied in Seoul National University by using Bosswick & Heckman social integration theory in order to understand social integration and how important of language towards foreign students help them in specially adjust themselves into Korean society. The important of language is used to examine social integration. The qualitative approach was applied in this study.

Four dimensions of social integration theory are acknowledged as the central components of successful integration: structural, cultural, interactive, and identification. And the samples were 20 Southeast Asian students in Seoul National University. The research instrument employed in this study was In-depth individual interview to receive more information in different way about their perspective towards Korean society.

Based on the results, the most respondents think language is important to them to get along with Korean society and easy to interact with Korean people. The results show that most respondents choose to come to study in Korea with their own decision so they can easily to adapt themselves into Korean society and more understanding about character of Korean society.
Measurement of the whole body, eye lens and extremity occupational exposures in nuclear medicine staff at King Chulalongkorn Memorial Hospital
Authors:   , Sisai Siriwan 
Published: September 2023

Due to the epidemiology evidence of cataract and eye lens opacity, ICRP Publication 118 in 2012, recommended the new eye lens dose limit of occupational exposure at 20 mSv/year, averaged over 5-year periods, no single year exceeding 50 mSv. For the public eye lens dose limit is 15 mSv/year. After ICRP changed the eye lens dose limit, many reports on eye lens dose measurement using thermoluminescent dosimeter (TLD) from interventional radiologists and interventional cardiologists were published. Few reports on eye lens dose measurement in nuclear medicine (NM) personnel were found.

The primary objective of this study is to measure whole body; Hp(10), eye lens; Hp(3), and finger; Hp(0.07) using Optically Stimulated Luminescent Dosimeter (OSLD) in ten NM staff which consists of one radiopharmacist, two radiochemists, five technologists, and two nurses who prepare, dispense, and inject radiopharmaceuticals, and scan patients at King Chulalongkorn Memorial Hospital (KCMH) for six months (March-August 2019). The second objective is to analyze the correlations between the Hp(10), Hp(3), and Hp(0.07).

Three sets of OSLDs were attached at whole body, eye lens (left and right), and finger of 10 nuclear medicine staff. The average and range of Hp(10), Hp(3)Lt, Hp(3)Rt, and Hp(0.07) were 1.73 (0.84-3.44), 1.19 (0.20-4.66), 1.24 (0.25-4.62), and 29.22 (1.13-261.83) mSv/year respectively. The correlations between the Hp(3)Lt VS Hp(10), Hp(3)Rt VS Hp(10), Hp(0.07) VS Hp(10), Hp(3)Lt VS Hp(0.07), and Hp(3)Rt VS Hp(0.07), excluding radiopharmacist were 0.54
(p-value = 0.14), 0.58 (p-value = 0.11), 0.46 (p-value = 0.21), 0.03 (p-value = 0.93), and 0.12 (p-value = 0.76) respectively. There was no correlation among five pairs because of all p-values were higher than 0.05.

The measurements of occupational exposures were less than the new ICRP dose limit and the study on the relation between the Hp(10), Hp(3), and Hp(0.07) can be concluded that the eye lens dosimeters are not required for NM staff at KCMH as they felt inconvenient wearing eye lens dosimeters. Whole body and finger dosimeters must be routinely used to monitor personnel dose, especially for radiopharmacist due to his high finger dose at 261.83 mSv/year. Eye lens dose could be estimated from the whole body or finger dose of the same person.
Effects of electrodeposition parameters on ZN-TIO2 coating for zinc-ion battery
Authors:   , Lolupiman Kittima 
Published: September 2023

This research work has an aim to modify and develop to obtain environmentally friendly Zinc ion battery (ZIB) with low cost. Usually, the limit of Zn ion battery is occurred by dendrite growth during cycling of Zn anode leading to shorter service lifetime. Therefore, in this present work had an idea to modify electrodeposition process by adding TiO2 nano particles into coated Zn layers. This composite deposits were used as the anode materials of ZIBs. The only Zn and Zn/TiO2 composite coatings were deposited on the stainless-steel foil as modified anodes. The plating and stripping tests of symmetric cells reveal that the agglomeration of TiO2 with Zn coatings would reduce the overpotential curves between plating and stripping processes. The galvanostatic charge-discharge tests reveal that the modified Zn/TiO2//MnO2 batteries exhibit higher rate ability and longer service lifetime than those of Zn//MnO2 batteries. Furthermore, increasing both current density and concentration of TiO2 in the electrolyte during electroplating results in more proper morphology of composite deposit of zinc electrode, which provides higher performances and longer lifetime of battery.
Effect of zirconium on physical properties and corrosion resistance of chromium and chromium nitride films
Authors:   , Leelaruedee Kumpon 
Published: September 2023

Corrosion is a common phenomenon which usually undergoes on metal surface leading to structural failure. Consequently, this topic has attracted many researchers to look for ways to prevent corrosion and extend lifetime of service. Coating with chromium (Cr) or chromium nitride (CrN) is the one popular technique, given the high corrosion resistance and obviating whole part replacement. However, the conventional film’s properties might not provide enough resistance for using in some severe environments. Tailoring structure to amorphous is usually considered for improve corrosion resistance.

Thin amorphous featureless of CrZr-film was successfully fabricated by magnetron co-sputtering. The suitable composition (46 %at.Zr) with low energetic adatoms due to low sputtering power, restricted adatoms diffusion and nucleation in a similar way to frozen them like amorphous structure. The amorphous featureless in CrZr-film contributed to the excellent anti-corrosion property as seen by the high value of Rfilm, Ecorr with low Icorr and passivation ability. The co-existing of Cr and Zr played the important role for reducing dissolution of zirconium oxide (ZrO2) which was the major compound in CrZr-passive film.

For nitride films, the CrZrN could be fabricated by reactive magnetron co-sputtering. Complex nitride of Cr and Zr, (Cr,Zr)N, was the predominant phase in all sputtering films. Addition of Zr with higher concentration refined crystallite size of (Cr,Zr)N due to strain confinement and simultaneously promote an amorphous Zr2ON2. Addition of Zr at 0.578 atomic fraction was enough for promoting amorphous phase which was high enough content for detectable by XRD.

Modification interface between matrix and film is one parameter affecting film's crystillinity. This work revealed that addition of amorphous CrZr-interlayer could promote amorphous structure in the top nitride film by performing as “random atomic arrangement template" for top film. It was effective method for promoting amorphization as seen by no evidence of crystallinity in XRD result. This amorphous featureless nitride film contributed the excellent corrosion resistance due to less of susceptible points and columnar structure.
Clinical evaluation of two glass ionomer cement restorations placed in primary molars with atraumatic restorative treatment technique: a randomized controlled trial.
Authors:   , Boonyawong Manarin 
Published: September 2023

Objective: The purpose of this study was to compare clinical success of a novel material (silver diamine fluoride incorporated with high-viscosity glass ionomer cement (SDF-GIC)) in Class II restoration in primary molars using atraumatic restorative treatment (ART) technique at 6- and 12- month follow-up.

Materials and Methods: A randomized controlled clinical trial using a parallel group design was carried out on 150 children aged 3-8 years old, from 5 public school in Samut Sakhon province, Thailand, with at least one class II cavities. They were randomly allocated to two treatment groups: ART restoration using either GIC (Fuji IX GP) or SDF-HVGIC (Fuji IX GP + Saforide). A total of 150 restorations were placed in vital primary molars by a pediatric dentist (HVGIC= 75, SDF-HVGIC= 75) and were evaluated­­ by one calibrated examiner, blinded to the type of material and not involved in the placement after 6 and 12 months. Results: The overall clinical success (95 percent confidence interval) at the 6-month follow-up for the GIC and SDF-GIC were 73.3 percent (61.9-82.9) and 62.76 percent (50.7-73.6), respectively. At 12-month follow-up, the clinical success for SDF-GIC and GIC were 61.3 percent (49.4-72.4) and 58.7 percent (46.7-69.9), respectively. However, no significant difference was detected in clinical success between the study groups for both follow-up periods (Chi’s square, p=0.161 for 6-month and p=0.739 for 12-month).

Conclusion: Class II ART restorations with the novel material (SDF-GIC) showed similar clinical success rate after 6 and 12 months compared to those with GIC.
Electrospun nylon 6,6 nanofibers functionalized with β-cyclodextrin as solid phase extraction sorbent for determination of parabens
Authors:   , Kuakul Tassanee 
Published: September 2023

In this study, electrospun nanofibers of nylon 6,6 functionalized with β-cyclodextrin (nylon 6,6/β-CD) were fabricated and applied as a sorbent in solid-phase extraction (SPE) for determination of parabens in water. The electrospinning parameters such as polymer concentration, nylon 6,6/β-CD ratio, and electric field strength were investigated in order to obtain uniform nanofibers. The morphology and physical properties of obtained fibers were characterized by scanning electron microscope (SEM), Fourier transforms infrared spectroscopy (FTIR), and BET surface area analysis. The electrospun nylon 6,6/β-CD nanofibers were achieved with diameter in the range of 120 - 150 nm. The additional of β-CD slightly increased the fiber diameter but decreased the surface area. Then, the nylon 6,6/β-CD nanofibers were examined as a sorbent in solid-phase extraction of parabens in water. The optimal condition is 10.0±0.5 mg of nanofibers as a sorbent, 15 mL of sample volume, and 200 µL of methanol for elution solvent. Under the optimal conditions, the linear range of parabens analysis was in the range from 25-200 µg.L-1 with a detection limit of 10 µg.L-1 and a limit of quantitation of 25 µg.L-1. The results of the validation method had a correlation coefficient greater than 0.9997, with %recovery of 40.6%, 41.5%, 81.4%, and 61.3% for iso-butyl paraben, n-butyl paraben, benzyl paraben, and pentyl paraben, respectively. Finally, the developed method is used for the determination of parabens in the drinking water sample.
Cytotoxic constituents of cymbidium finlaysonianum and paphiopedilum dianthum
Authors:   , Lertnitikul Nonthalert 
Published: September 2023

Chemical investigation of two orchids native to Thailand led to the isolation of eighteen compounds. From the whole plants of Cymbidium finlaysonianum Wall. ex Lindl, a new dihydrophenanthrene, 1-(4-hydroxybenzyl)-2,7-dihydroxy-4,6-dimethoxy-9,10-dihydrophenan-threne, and nine known stilbenoids, including a phenanthrenequinone, cymbinodin-A, a dihydrophenanthrenequinone, ephemeranthoquinone B, a bibenzyl, batatasin III, two phenanthrenes, 2,4-dimethoxy-3,7-dihydroxyphenanthrene and 3,7-dihydroxy-2,4,6-trimethoxyphenanthrene, and four dihydrophenanthrenes i.e. coelonin, 6-methoxycoelonin, flavanthridin and lusianthridin, were obtained. From the roots and leaves of Paphiopedilum dianthum Tang & Wang, two new stilbene dimers, paphiodianthins A and B, were isolated along with three known stilbenes i.e. pinosylvin monomethyl ether, 2,3'-dihydroxy-5'-methoxystilbene and (E)-2,5'-dihydroxy-2'-(4-hydroxybenzyl)-3'-methoxystilbene, and three known flavonoids i.e. isalpinin, pinocembrin and galangin. The chemical structures of these compounds were determined by spectroscopic techniques including UV, IR, MS and NMR, as well as comparison with previously reported data. These isolated compounds were assayed for their cytotoxicity against colon (Caco-2), breast (MCF-7) and lung (NCI-H187) cancer cell lines, as well as two resistant sublines of MCF-7 cells (MCF-7/DOX and MCF-7/MX), by MTT and resazurin microplate assays. Among compounds isolated from C. finlaysonianum, cymbinodin-A displayed the strongest cytotoxicity against almost all cancer cell lines tested (Caco-2, NCI-H187, MCF-7/DOX and MCF-7/MX), whereas coelonin was the most cytotoxic constituent against MCF-7 cell line. Other compounds from this orchid were moderately cytotoxic. From P. dianthum, (E)-2,5'-dihydroxy-2'-(4-hydroxybenzyl)-3'-methoxystilbene and paphiodianthin A exhibited the strongest cytotoxic effect against all cell lines tested, while pinosylvin monomethyl ether and paphiodianthin B were strongly cytotoxic to MCF-7 cells, but were moderately toxic or non-toxic to normal cells (NIH/3T3). Moreover, isalpinin was more cytotoxic to MCF-7/DOX subline than to MCF-7 cell line and was non-toxic to normal cell line.