SCOPUS 2021
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Item A comprehensive analysis of hermiteÐhadamard type inequalities via generalized preinvex functions(MDPI, 2021) Muhammad Tariq; Hijaz Ahmad; HŸseyin Budak; Soubhagya Kumar Sahoo; Thanin Sitthiwirattham; Jiraporn Reunsumrit; T. Sitthiwirattham; Department of Mathematics, Faculty of Science and Technology, Suan Dusit University, Bangkok, 10300, Thailand; email: thanin_sit@dusit.ac.thThe principal objective of this article is to introduce the idea of a new class of n-polynomial convex functions which we call n-polynomial s-type m-preinvex function. We establish a new variant of the well-known HermiteÐHadamard inequality in the mode of the newly introduced concept. To add more insight into the newly introduced concept, we have discussed some algebraic properties and examples as well. Besides, we discuss a few new exceptional cases for the derived results, which make us realize that the results of this paper are the speculations and expansions of some recently known outcomes. The immeasurable concepts and chasmic tools of this paper may invigorate and revitalize additional research in this mesmerizing and absorbing field. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Item A prabhakar fractional approach for the convection flow of casson fluid across an oscillating surface based on the generalized fourier law(MDPI, 2021) Noman Sarwar; Muhammad Imran Asjad; Thanin Sitthiwirattham; Nichaphat Patanarapeelert; Taseer Muhammad; T. Sitthiwirattham; Mathematics Department, Faculty of Science and Technology, Suan Dusit University, Bangkok, 10300, Thailand; email: thanin_sit@dusit.ac.thIn the present work, an unsteady convection flow of Casson fluid, together with an oscillating vertical plate, is examined. The governing PDEs corresponding to velocity and temperature profile are transformed into linear ODEs with the help of the Laplace transform method. The ordinary derivative model generalized to fractional model is based on a generalized Fourier law. The solutions for energy and velocity equations are obtained after making the equations dimensionless. To check the insight of the physical parameters, especially the symmetric behavior of fractional parameters, it is found that for small and large values of time, fluid properties show dual behavior. Since the fractional derivative exhibits the memory of the function at the chosen value of time, therefore the present fractional model is more suitable in exhibiting memory than the classical model. Such results can be useful in the fitting of real data where needed. In the limiting case when fractional parameters are taken _ = _ = 0 and _ = 1 for both velocity and temperature, we get the solutions obtained with ordinary derivatives from the existing literature. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Item A qualitative assessment of a full-service network airline sustainable energy management: The case of finnair plc(World Scientific and Engineering Academy and Society, 2021) Glenn Baxter; Panarat Srisaeng; Graham Wild-Airlines are extremely energy intensive. Around the world airlines are increasingly focusing on the environmentally sustainable energy management. Using a qualitative longitudinal case study research approach, this study examines FinnairÕs sustainable energy management over the period 2010 to 2019. The airlineÕs major energy source is jet fuel used for the operation of the airlineÕs aircraft fleet and the electricity which is used to power its facilities located at Helsinki Airport. The study found that FinnairÕs annual jet fuel consumption has grown throughout the study due to the airlineÕs route network and aircraft fleet expansion. The fuel required for ground vehicles has risen reflecting greater operational requirements due to the companyÕs expansion. The annual consumption of electricity and electricity for heating has displayed a general downward trend during the study period. The annual electricity per passenger has also decreased despite the large growth in passenger numbers. Finnair has increased its use of renewable energy sources for its flight and ground operations. A key energy saving strategy has been the acquisition and operation of a modern state-of-the-art, fuel efficient aircraft fleet. © 2021, World Scientific and Engineering Academy and Society. All rights reserved.Item Achieving carbon neutral airport operations by 2025: The case of Sydney Airport, Australia(Sciendo, 2021) Glenn Baxter; G. Baxter; School of Tourism and Hospitality Management, Suan Dusit University, Huahin Prachaup Khiri Khan, 77110, Thailand; email: g_glennbax@dusit.ac.thUsing a qualitative instrumental case study research design, this study examines the strategies and carbon reduction measures implemented by Sydney Airport to achieve their goal of being a carbon neutral airport by 2025. The study period was from 2013 to 2019. The qualitative data was analyzed using document analysis. Sydney Airport has implemented a wide range of carbon reduction measures that underpin its strategy to become a carbon neutral airport. Sydney Airport's annual emissions intensity per passenger declined in each year examined in study. Sydney Airport has participated in the Airports Council International Airport Carbon Accreditation Program since 2014 and currently holds Accreditation Level 3: Optimization. Sydney Airport's goal is to be awarded Accreditation Level 3+: Carbon Neutrality by 2025. Sydney Airport has a carbon offsets agreement in place with a not-forprofit organization. © 2021 Sciendo. All rights reserved.Item An Investigation of the Language used on Signage in Japanese Town on Sukhumvit Road, Bangkok through the Lens of Linguistic Landscape(Research and Development Institute Suan Dusit University, 2021) Gornkrit Meemongkol; Sutsawad Jandum; G. Meemongkol; International College for Sustainability Studies, Srinakharinwirot University, Bangkok, 10110, Thailand; email: gornkrit@g.swu.ac.th;This study investigates the language diversities and Japanese language usage reflected on the signage found in Japanese town on Sukhumvit Road, Bangkok. A qualitative research method was used, with which samples were collected by taking fifty photos of signage along five alleys on Sukhumvit Road with Japanese script appearing on them. The framework of Landry & Bourhis (1997) was employed in this study. The results show that Japanese has an important role in the multilingual area of Sukhumvit Road whereas English was used as the international language. Moreover, Thai language appeared on the signage as the national language but English was still the main language used to communicate with the target customers of various nationalities. It is inferred that most people in the area understand everyday English well. Additionally, the signage of Japanese restaurants was the most prominent and most of them represent Japanese culture. In addition, horizontal text was evident in the system of writing. This may be influenced by the Thai writing system as well as the Western languages. Furthermore, Kanji scripts were the most used on the signage compared to Hiragana and Katakana scripts. Overall, Kanji, as the picture scripts of Japanese language, may convey the meaning of lexical words to readers effectively. © 2021, Research and Development Institute Suan Dusit University. All rights reserved.Item Analysis of a discrete mathematical COVID-19 model(Elsevier B.V., 2021) Thanin Sitthiwirattham; Anwar Zeb; Saowaluck Chasreechai; Zohreh Eskandari; Mouhcine Tilioua; Salih Djilali; S. Djilali; Department of Mathematics, Faculty of Exact Sciences and Computer Science, Hassiba Benbouali University, Chlef, Algeria; email: s.djilali@univ-chlef.dzTo describe the main propagation of the COVID-19 and has to find the control for the rapid spread of this viral disease in real life, in current manuscript a discrete form of the SEIR model is discussed. The main aim of this is to describe the viral disease in simplest way and the basic properties that are related with the nature of curves for susceptible and infected individuals are discussed here. The elementary numerical examples are given by using the real data of India and Algeria. © 2021 The Author(s)Item Antibacterial, antioxidant, cytotoxic effects and GC-MS analysis of mangrove-derived Streptomyces achromogenes TCH4 extract(Institut za Bioloska Istrazivanja, 2021) Janpen Tangjitjaroenkun; Wanchai Pluempanupat; Rungnapa Tangchitcharoenkhul; Waraporn Yahayo; Roongtawan Supabphol; J. Tangjitjaroenkun; Department of Resources and Environment, Faculty of Science at Si Racha, Kasetsart, University, Chonburi, Thailand; email: janpen.ta@ku.th; R. Supabphol; Department of Physiology, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand; email: roongtawans@gmail.comThe in vitro biological activities of the ethyl acetate extract of the culture filtrate from Streptomyces achromogenes TCH4 (TCH4 extract) were evaluated. The ethyl acetate extract of TCH4 produced a bacteriostatic effect against Enterobacter cloacae, Staphylococcus aureus, Staphylococcus saprophyticus, Bacillus subtilis, methicillin-resistant S. aureus (MRSA) and Klebsiella pneumoniae. The extract had bactericidal activity against S. aureus, S. saprophyticus, S. aureus (MRSA) and K. pneumoniae with minimum bactericidal concentration (MBC) values in the range of 500-1000 µg/mL. The total phenolic and flavonoid contents in TCH4 extract were 107.20±2.57 mg gallic acid equivalent (GAE)/g and 44.91±0.84 mg quercetin equivalent (QE)/g of dry extract. Antioxidant activity was determined by DPPH radical (IC50 299.64±6.83 µg/mL) and ABTS radical scavenging (IC50 65.53±0.95 _g/mL), and the ferric-reducing antioxidant power (FRAP) (822.76±9.12 mM FeSO4.7H2O/g dry extract) assays. TCH4 extract exhibited cytotoxic activity in the DU-145 cell line (IC50 9.36±0.37 _g/mL). Analysis of extract constituents by GC-MS revealed pyrrolo[1,2-a]pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl) (36.85%), benzeneacetamide (23.76%), and deferoxamine (12.85%) as the major compounds, which have been reported to possess pharmaceutical properties. S. achromogenes TCH4 could be a potential source of bioactive metabolites with antibacterial, antioxidant and anticancer activities for pharmaceutical applications. © 2021 by the Serbian Biological SocietyItem Antioxidant Activities, Total Phenolic Compounds and Fucoxanthin of Marine Benthic Diatoms Amphora subtropica BUUC1502 and Thalassiosira sp.(Research and Development Institute Suan Dusit University, 2021) Pakawan Setthamongkol; Nisa Siranonthana; Ranchayanee Chalermmueang; Yutthaya Yuyen; Janjarus Watanachote; Rachanimuk Hiransuchalert; Maliwan Kutako; M. Kutako; Faculty of Marine Technology, Burapha University Chanthaburi Campus, Chanthaburi, 22170, Thailand; email: maliwan@buu.ac.thThis researchÕs aim was to study antioxidant activities, total phenolic compounds and fucoxanthin of crude extract of marine benthic diatoms, Amphora subtropica BUUC1502 and Thalassiosira sp. These two diatoms were cultured in a Guillard F/2 media, which was prepared from sea water with a salinity at 30 psu for 8 days. It was found that A. subtropica BUUC1502 shows better growth than Thalassiosira sp. (p<0.05). Whereas the biomass yield of Thalassiosira sp. is higher than of A. subtropica BUUC1502 (p<0.05). The diatoms were extracted using methanol solvent (99.8%). Crude extracts of A. subtropica BUUC1502 and Thalassiosira sp. yielded 0.38±0.01 and 0.36±0.00 g/g DW, respectively. The total phenolic compounds and fucoxanthin of them were similar (p>0.05) with 2.92-3.09 mg GAE/g crude extract and 18.85-19.74 mg/g DW, respectively. The IC50 of DPPH free radical inhibition of crude extracts from A. subtropica BUUC1502 and Thalassiosira sp. is 231.75±40.75 and 179.84±27.90 µg/mL, respectively, while the IC50 of ABTS free radical inhibition is 68.28±7.31 and 46.90±1.83 µg/mL, respectively. The results of this research show that these two marine benthic diatoms may be an antioxidant source that can be used in various related fields. © 2021, Research and Development Institute Suan Dusit University. All rights reserved.Item Antioxidant and anti-aging enzyme activities of bioactive compounds isolated from selected Zingiberaceae plants(Kasetsart University, 2021) Rittipun Rungruang; Wittawat Ratanathavorn; Nattaporn Boohuad; Orrapun Selamassakul; Nattapon Kaisangsri; R. Rungruang; Department of Cosmetic Science, Faculty of Science and Technology, Suan Dusit University, Bangkok, 10700, Thailand; email: rittipun_run@dusit.ac.thBioactive compounds and antioxidant and enzyme inhibition activity levels were evaluated for three plants in the Zingiberaceae family in Thailand. Quantification of the phenolic and curcumin contents revealed that the largest component of all extracts was phenolic compounds (213.16-317.64 mg/g extract). The major curcuminoids in Curcuma longa L., Curcuma aromatica Salisb. and Zingiber montanum (J.Koenig) Link ex A.Dietr. were bisdemethoxycurcumin (BDMC; 27.31 mg/g extract), curcumin (16.59 mg/g extract), and curcumin (0.12 mg/g extract), respectively. The extracts from C. longa, C. aromatica and Z. montanum all showed antioxidant activity that was assessed using 1,1-diphenyl-2-picrylhydrazyl radical 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH¥) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS¥+) radical scavenging assay. In addition, all extracts had copper chelating activity of more than 50%, with the extract from C. longa having the highest chelating activity (76.45%). All extracts from the three plants inhibited tyrosinase and elastase activity with half maximal inhibitory concentration values of 290.33-1,373.68 µg/mL and 69.61-3386.23 µg/mL, respectively. In addition, collagenase inhibition activity was observed in all extracts. The findings from this study showed that extracts from C. longa, C. aromatica and Z. montanum have potential antioxidant activity and can act as anti-tyrosinase, anti-collagenase and anti-elastase agents. The extracts could be further applied in cosmeceuticals as an active ingredient for anti-aging products. © 2021 Elsevier B.V.. All rights reserved.Item Application of asymptotic homotopy perturbation method to fractional order partial differential equation(MDPI, 2021) Haji Gul; Sajjad Ali; Kamal Shah; Shakoor Muhammad; Thanin Sitthiwirattham; Saowaluck Chasreechai; T. Sitthiwirattham; Mathematics Department, Faculty of Science and Technology, Suan Dusit University, Bangkok, 10300, Thailand; email: thanin_sit@dusit.ac.thIn this article, we introduce a new algorithm-based scheme titled asymptotic homotopy perturbation method (AHPM) for simulation purposes of non-linear and linear differential equations of non-integer and integer orders. AHPM is extended for numerical treatment to the approximate solution of one of the important fractional-order two-dimensional Helmholtz equations and some of its cases . For probation and illustrative purposes, we have compared the AHPM solutions to the solutions from another existing method as well as the exact solutions of the considered problems. Moreover, it is observed that the symmetry or asymmetry of the solution of considered problems is invariant under the homotopy definition. Error estimates for solutions are also provided. The approximate solutions of AHPM are tabulated and plotted, which indicates that AHPM is effective and explicit. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Item Aviation Safety, Freight, and Dangerous Goods Transport by Air(Elsevier, 2021) Glenn S. Baxter; Graham WildAir cargo or air freight is an essential element of the global aviation industry, and with the growth of e-commerce and greater internationalization it will continue to grow, along with passenger transportation. Safety in aviation in general is a corner stone of the industry, and this is also true for air cargo operations, which regularly involves the transportation of dangerous goods by air. To facilitate this, international organizations have specified regulatory requirements and technical guidelines. The nature of the air freight, including the historical trends and the key players in the global supply chain, in addition to the requirements for the transportation of dangerous goods by air, are discussed herein. © 2021 Elsevier Ltd. All rights reservedItem Behaviours of Thai People Amid Covid-19 Pandemic(Research and Development Institute Suan Dusit University, 2021) Sirote Pholpuntin; Sukhum Chaleysub; Nongluck Chotevithayathanin; Pornpan Buathong; P. Buathong; Suan Dusit Poll, Suan Dusit University, Bangkok, 10300, Thailand; email: pornpan_bua@dusit.ac.thAmid the pandemic of Coronavirus 19 or Covid-19 in 2021, Suan Dusit Poll, Suan Dusit University has conducted opinion surveys on Thai people from April to June 2021 encompassing 13 topics and 24,846 samples. The survey results have reflected on the behaviours of Thai people amid the Covid-19 pandemic into 3 di-mensions, namely, (1) emotion and feeling towards Covid-19 situation Ð Thais think the third wave of Covid-19 pandemic rapidly spread in various areas, it is scared than the two previous pandemics leading to feeling stressed, worried, anxious, worse, and despairing, (2) social and way of life Ð Thais cling into more social media; however, they choose to trust television media more than other media. The more they addict to the news, the more they feel anxious and stressed. They spend a lot on surgical masks and alcohol, focus on cooking and eating at their home, and love to work from home and the workplace equally. Also, they think online learning for their kids are not ready, and (3) Thai economy Ð Thai people do not spend their money more even though the Thai government has provided monetary compensation to assist under various kinds of projects and measurements. © 2021, Research and Development Institute Suan Dusit University. All rights reserved.Item Brothers or ÒOthersÓ? Attitudes of Thais Towards Chinese Tourists during COVID-19; [________________________](Routledge, 2021) Yi Lin; Worapinya Kingminghae; Pimravee Mahasirithai; Y. Lin; Pridi Banomyong International College, Thammasat University, Bangkok, Thailand; email: lin.yi@pbic.tu.ac.thAlthough the influx of Chinese tourists boosts the economies of host countries, their arrivals are not without doubt. The present study aims to explore what underlies different attitudes of Thais toward Chinese tourists in the lens of exchange and contact at a time when the Covid-19 pandemic was decimating Thai tourism. By examining the nature and intensity of host-tourist contacts, and through thematic analysis of interview data, this study found that although the economic importance of Chinese tourists became salient when the pandemic drove away tourists, what substantiated an exchange approach represented by Social Exchange Theory was localsÕ social and symbolic benefits/costs. Drawing on intergroup contact theory, we found that for Thais to improve their attitudes toward Chinese tourists, or metaphorically speaking, to find their lost brothers, social-cultural compatibility and resonances between the two peoples aroused in sustained interactions was the key. This study suggests that tourism researchers pay careful attention to the interplays of cultural particularities and the landscape-changing pandemic in a more complicated reality, when applying existing theories. © 2021 Informa UK Limited, trading as Taylor & Francis Group.Item Classification for avian malaria parasite Plasmodium gallinaceum blood stages by using deep convolutional neural networks(Nature Research, 2021) Veerayuth Kittichai; Morakot Kaewthamasorn; Suchansa Thanee; Rangsan Jomtarak; Kamonpob Klanboot; Kaung Myat Naing; Teerawat Tongloy; Santhad Chuwongin; Siridech Boonsang; S. Boonsang; Department of Electrical Engineering, School of Engineering, King MongkutÕs Institute of Technology Ladkrabang, Bangkok, Thailand; email: Siridech.bo@kmitl.ac.thThe infection of an avian malaria parasite (Plasmodium gallinaceum) in domestic chickens presents a major threat to the poultry industry because it causes economic loss in both the quality and quantity of meat and egg production. Computer-aided diagnosis has been developed to automatically identify avian malaria infections and classify the blood infection stage development. In this study, four types of deep convolutional neural networks, namely Darknet, Darknet19, Darknet19-448 and Densenet201 are used to classify P. gallinaceum blood stages. We randomly collected a dataset of 12,761 single-cell images consisting of three parasite stages from ten-infected blood films stained by Giemsa. All images were confirmed by three well-trained examiners. The study mainly compared several image classification models and used both qualitative and quantitative data for the evaluation of the proposed models. In the model-wise comparison, the four neural network models gave us high values with a mean average accuracy of at least 97%. The Darknet can reproduce a superior performance in the classification of the P. gallinaceum development stages across any other model architectures. Furthermore, the Darknet has the best performance in multiple class-wise classification, with average values of greater than 99% in accuracy, specificity, and sensitivity. It also has a low misclassification rate (< 1%) than the other three models. Therefore, the model is more suitable in the classification of P. gallinaceum blood stages. The findings could help us create a fast-screening method to help non-experts in field studies where there is a lack of specialized instruments for avian malaria diagnostics. © 2021, The Author(s).Item Co-creating a sustainable regional brand from multiple sub-brands: The andaman tourism cluster of Thailand(MDPI AG, 2021) Siwarit Pongsakornrungsilp; Pimlapas Pongsakornrungsilp; Theeranuch Pusaksrikit; Pimmada Wichasin; Vikas Kumar; P. Pongsakornrungsilp; Department of Tourism and Hospitality Industry, School of Management, Walailak University, Nakhon Si Thammarat, 80160, Thailand; email: kpimlapa@wu.ac.thThe purpose of this study was to explore how a regional brand can be co-created among different cities by employing the concept of place branding and brand culture. The Andaman Tourism Cluster of Thailand (ATC) generates the most tourism revenue in Thailand. Developing a regional brand identity can strengthen the competitive advantage of the ATC. Data were collected using multi-method research through questionnaires, projective techniques, and focus group inter-views. Quantitative data were analyzed using descriptive and inferential statistics, while qualitative data were analyzed using thematic analysis. This study also shows that multi-method research contributes to brand management by facilitating collaboration, participation, and brand congruence among stakeholders. Quantitative and qualitative data were synthesized in order to develop the brand identity of the ATC. Focus group interviews were also employed to co-create the regional brand identity as ÔIrresistible AndamanÕ, of which sustainable tourism management is a fundamen-tal aspect. This study demonstrates how multiple sub-brands with different stakeholders can be integrated into a single regional brand. Moreover, stakeholders should focus on internal branding by communicating with all stakeholders to co-create brand congruence. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Item Correlating the Speed of Sound with the Gibbs Energy and Estimating the Speed of Sound in Fatty Acid Methyl Ester and Biodiesel(John Wiley and Sons Inc, 2021) Apinya Cheewaphan; Ubol Chuensumran; Suriya Phankosol; Kornkanok Aryusuk; Supathra Lilitchan; Kanit Krisnangkura; K. Krisnangkura; Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (Bangkhuntien), Bangkok, 10150, Thailand; email: kanitkrsnk@yahoo.comThe relationship between the speed of sound (u) in biodiesel and the change in Gibbs energy (_G) has not been described in the literature. With the Gibbs energy additivity method, the relationship between u and _G can be expressed as ln(u2)Ê=Ê_G/RT + A, where R is the universal gas constant, T is the absolute temperature, and A is a constant. The molecule of fatty acid methyl ester (FAME) was arbitrarily sub-divided into groups of atoms and a _G was assigned to each group of atoms. A new model correlating the speed of sound to the structure of fatty acid was derived. The proposed model was good for estimation of the speed of sound in both FAME and biodiesel at various temperatures with good accuracy. The absolute average deviations for the speed of sound in FAME (65 data points) and in biodiesel (175 data points) were 0.23% and 0.36%, respectively. Only the number of double bonds and carbon atoms of the fatty acid are required for the calculation. © 2021 AOCSItem Degradation of poly(Butylene succinate) and poly(butylene succinate)/poly(lactide) blends using serine protease produced from laceyella sacchari LP175(Walailak University, 2021) Srisuda Samaimai; Sukhumaporn Krajangsang; Vichien Kitpreechavanich; Jednipit Borthong; Thanasak Lomthong; T. Lomthong; Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani, 12110, Thailand; email: thanasak_l@rmutt.ac.thThe thermophilic filamentous bacterium Laceyella sacchari LP175 was cultivated in a 10.0 L airlift fermenter to produce serine protease at 50 ¡C. Maximal serine protease activity at 1,123.32 ± 15.8 U/mL was obtained for cultivation at 0.6 vvm aeration rate for 36 h. The crude enzyme was applied for degradation of poly (butylene succinate) (PBS), and poly (butylene succinate)/poly(lactide) blend (PBS/PLA) powders at 50 ¡C for 48 h with different substrates and enzyme concentrations. Results showed that serine protease produced from L. sacchari LP175 degraded PBS and PBS/PLA at 46.5 ± 2.05 and 49.8 ± 1.45 %, respectively, at an initial substrate concentration of 100 g/L with 1,200 U/mL of serine protease activity. Percentage degradation of PBS and PBS/PLA was improved to 51.4 ± 1.06 and 56.9 ± 1.42 %, respectively, when upscaled in a 2.0 L stirrer fermenter with 200 rpm agitation rate. Degradation products evaluated by a scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) confirmed that serine protease produced from L. sacchari LP175 degraded both PBS and PBS/PLA polymers. Results showed that microbial enzyme technology could be used to degrade PBS and PBS/PLA blend polymers and reduce the accumulation of waste. © 2021, Walailak University. All rights reserved.Item Digital Business Transformation: Digital Culture Before Technology(Research and Development Institute Suan Dusit University, 2021) Pornchanit Kaew-Nate; P. Kaew-Nate; Faculty of Management Science, Suan Dusit University, Bangkok, 10300, Thailand; email: Pornchanit_dusit@ac.thThis article is a study to highlight that digital transformation is something that businesses cannot avoid. However, the transition is not just about adopting the technology. The organizational leaders must also understand that the condition for transitional success is a harmonious change of people, systems, and contexts. This academic paper studies three issues: 1) Concept of Digital Thailand 2) Concept of Digital transformation 3) Promotion of personnel in organizations to have skills and digital culture. The study shows that digital transformation can be successful if important aspects are implemented. The principle aspects are the self-review of the organization from the vision, strategy, operational processes and value delivered to the customer as well as determining where the organization is in the digital age industry to see why there are operational delays and, most importantly, to see the qualifications of organizational leaders who need to understand digital transformation. All of this is the corporate culture in the digital transformation era, not just buying or importing technology into the organization without considering other elements. However, the definition of the word ÒDigital cultureÓ is also diverse. In this academic article, it is used to define the meaning of ÒDigital cultureÓ which refers to a modern corporate culture that focuses on changing the work and way of thinking of the people in the organization. © 2021, Research and Development Institute Suan Dusit University. All rights reserved.Item Effect of Chilling and Freezing Storage of Cookie Dough on Dry Roasted Pork Cookie Quality(Research and Development Institute Suan Dusit University, 2021) Sawittree Nuwongsri; S. Nuwongsri; School of Culinary Arts, Suan Dusit University, Trang Center, Trang, 92000, Thailand; email: sawittree_nuw@dusit.ac.thLow temperature is an easy technique which preserves and retains product quality. The objectives of this research were to develop the Trang local roasted pork pieces into cookies and to study the effect of chilling and freezing of cookie dough on cookie quality. The methodology of research was conducted by studying 3 different levels (25%, 50% and 75%) of dry roasted pork suitable to be cookie and study the cookie properties: microbiological and physical quality. The results of this research indicated that addition of dry roasted pork into cookie dough at 50% level received the highest sensory score for all aspects. The 50% dry roast pork cookie dough was studied regarding chilling and freezing storage condition, and determined color, spread ratio and textural quality. The color parameters were determined through lightness (L*), redness (a*) and yellowness (b*) values of both cookie dough models stored under chilling and freezing and the results showed that these values increased with increasing retention time. In terms of cookie color from chilling and freezing cookie dough, it was found that L* and a* decreased but b* was unchanged. The spread ratio for both cookies from chilling and freezing dough decreased, the spread ratio of freezing dough was lower than chilling dough. When cookieÕs textural quality was investigated, hardness value from both chilling and freezing cookie dough increased after week 2 and increase rate continued until week 6. In addition, the chewiness value increased for both cookies from chilling and freezing dough. The fracturability of cookies from chilling and freezing dough slightly increased after 6-week storage. Crispiness value of both cookies from chilling and freezing dough were stable as early as 2 weeks and continually increased until last storage time at week 6. © 2021, Research and Development Institute Suan Dusit University. All rights reserved.Item Effect of foaming and drying conditions on physicochemical properties and moisture kinetics of foam mat dried chili sauce powder during storage(Blackwell Publishing Ltd, 2021) Naratip Poonnakasem; N. Poonnakasem; School of Culinary Arts, Suan Dusit University, Bangkok, Thailand; email: pomac116@hotmail.comThe objectives of this research were to study the effect of concentration of egg white and air temperature on physicochemical properties and the effect of packaging on the moisture during storage of foam mat dried chili sauce powder. Results demonstrated that 6% (wt/wt chili sauce basis) egg white as foaming agent and drying temperature at 80¡C to produce chili sauce powder were the optimum condition that led to higher foam expansion, yield percentage, and water solubility, and lower moisture content, Aw, and bulk density. For microbiology test, total viable count, yeast and mold, coliform, and E. coli followed a Thai community product standard of seasoning powder. Plots of moisture content of product in all types of packaging versus time were linear model. The best packaging that could protect moisture permeability was aluminum foil laminate. According to the shelf life prediction, the product in packaging could be stored for 13Êmonths. Practical applications: Chili sauce (hot sauce) is one of the most famous products processed from chili and can be added to many kinds of foods. Application of foam mat drying for this product can extend its shelf life and increase product variety for consumers. The optimum condition for production of chili sauce powder is 6% egg white as foaming agent and drying temperature at 80¡C. The kinetic modeling can be applied for tracking moisture changes of products. The best packaging that could protect moisture permeability was aluminum foil laminate that can be used to store the product for 13Êmonths. This research can be benefit the industrial sauce production for better distribution of the products. © 2021 Wiley Periodicals LLC.