Browsing by Resource Types "Research Report"
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    AU career satisfaction and engagement : academic year 2018
    (Institute for Research and Academic Services, 2018)
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    AU career satisfaction and engagement : academic year 2019
    (Institute for Research and Academic Services, 2019)
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    Convex Analysis for Meta Analysis
    (Assumption University, 2017-01-06) Adamcik, Martin
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    Determinants and Impacts of Internet Addiction on Well-being and Educational Adjustment of University Students
    (Assumption University, 2017-07-18) Varma, Parvathy ; Polthep Poonpol ; Uree Cheasakul
    The present research aimed to investigate the determinants and impacts on internet addiction on wellbeing and educational adjustment of Thai University students. The major purposes of this current study were (1) to establish the psychometric properties of the Thai translated questionnaires of parenting styles, self-regulation, educational adjustment and psychological well being in Thai settings; (2) to investigate the direct and indirect influences of parenting styles (authoritarian, authoritative and permissive )on educational adjustment and psychological well-being mediated by self-regulation and internet addiction among university students in Thailand; (3) To examine the influence of parenting styles (authoritarian, authoritative and permissive) on self-regulation among University students in Thailand; and (4) to examine if parenting styles (authoritarian, authoritative and permissive) influences the tendency of internet addiction among University students. Self-Regulation Questionnaire (SRQ), the Internet Addiction Scale (IA T), the Parental Authority Questionnaire (P AQ), Educational adjustment Scale (EAS)and the Satisfaction with Life Scale were the instruments used to collect data from 794 university students from 10 universities in Thailand. The results of the study indicated a direct positive relationship between authoritarian parenting style and life satisfaction and educational adjustment. Permissive parenting style also has a positive relation on educational adjustment. The result also indicates an indirect relationship parenting styles on education adjustment mediated by self-regulation and Internet addiction. The more positive parenting the students experience, that is the more authoritative their parents are, better are their self- regulatory skills and better are their educational adjustment; similarly the more authoritative the parents are lower were their addiction to Internet and better were their educational adjustment. The general parenting styles used are more authoritarian m Thai setting and students were experiencing higher life satisfaction with this style.
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    The Development of Centella asiatica Extract-Loaded BSA Nanoparticles Production to Improve Bioavailability
    (Assumption University, ) Patchanee Yasurin
    Centella asiatica cBao-bog) is used as a traditional drug widely in Asia. C. asiatica crude extracts showed excellent potential in-vitro but less or no in-vivo activity due to their poor lipid solubility or improper molecular size or both, resulting in poor absorption, poor dosing and poor bioavailability. The Bovine serum albumin cBSA) can attract macromolecular and carry wide variety of molecule. So this research was aimed to develop C. asiatica extract-loaded BSA nanoparticles cCBNP) to improve bioavailability. CBNP was prepared by the desolvation method using three different ratio C. asiatica crude chloroform extracts: BSA cl:2, 1:3, and 1:4). The well agar diffusion method was used for evaluating antibacterial activity of CBNP with different concentration (100, 200, and 300 µg!Illl) against five food borne pathogens cEscherichia coli ATCC25822, Salmonella enterica Typhimurium U302 cDT104b), S. enterica Enteritidis chuman), S. enterica 4,5,12:i:- chumall) US clone, and Bacillus cereus). The results showed that the antibacterial activity of CBNP did not show significant different on three different ratio and concentration in all food borne pathogens except S. enterica Enteritidis chuman) and B. cereus cP < 0.05). The highest antibacterial active of CBNP was 1.07±0.46 cm against S. enterica Enteritidis (human) on ratio 1 :4, 200 µg!Illl. The antibacterial activity of CBNP gave almost 2 times highe than free crude C. asiatica chloroform extracts. The modified Folin-Ciocalteu method, Ferric reducing antioxidant potential assay and DPPH assay were used for evaluating antioxidant activity. The highest antioxidant activity represented by the amount of phenolic content of CBNP was 14.59±6.74 µgGAEIIllg using ratio 1:2. The amount of phenolic content of CBNP did not show significant different between ratio 1 :2 and others cP < 0.05). For Ferric reducing antioxidant potential assay and DPPH assay, crude chloroform extract showed significantly higher activity than CBNP were 1.00 ± 0.15 mmol Fe2 + 1Illg and 29.44 ± 8.20 % DPPH radical scavenging respectively cP < 0.05). The entrapment efficiency and loading efficiency of CBNP showed highest value on ratio 1 :4 which were 96.94 ± 1.48% and 42.05 ± 5.68% respectively. It's also showed highest in release kinetic In Vitro approximately 12% during the whole period of 6 hours in both artificial gastric and intestinal juice. C. asiatica crude chloroform extract have higher solubility in water than CBNP but CBNP have higher stability in releasing crude chloroform extract. The results indicated that CBNP showed the promising to increase bioavailability of C. asiatica.
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    Drug use/abuse: policies and policy implementation in higher education instituties in Bangkok
    (Research Institute of Assumption University, 2009) Preecha Methavasaraphak ; Linchong Chorrojprasert ; Narong Chumsupanwaree ; Juthaporn Wannarat ; Urai Chaktrimongkhol ; Kanokporn Isarankura na Ayuthaya
    The objectives of this study are to study policies and policies implementation concerning drug use/abuse among Higher Education Institutions (HEls) in Bangkok Metropolis, to study the operational processes of policies and measures concerning drug use/abuse among HEls, to study the current situation of drug use/abuse among HE!s, and to study problems and obstacles on drug prevention among HEls. Research methodologies and activities for this research were divided into three phases (Phase I: Brainstorming seminar, Phase II: In-depth interviews, and Phase Ill: Students survey) and include both quantitative and qualitative approaches. The research results are: there was not much difference in the process of operation concerning drug problems among HEls. There were no written policies and specific plans concerning drugs in most institutions. Policies concerning drug were set up by Commission of Higher Education (CHE). Most of the responsible persons know how to handle drug problems in their institution. They have enough knowledge about drugs such as the different kind of drugs, the harmful effects of each kind, etc. Some institutes report that they found only few addicts in campus. Most of the serious cases of addicts were found outside the institutes and they went to re-habilitation center themselves. The administrators . and responsible persons believed that drug problems in their institutes were not serious. Most institutes organized drug prevention activities, followed CHE 's instructions, every year as a routine.
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    Effect of encapsulation on Zymomonas mobilis survival rate from practical conditions and its levan polysaccharide production ability
    (Assumption University, 2017-09) Teeradate Kongpichitchoke
    Bioethanol is one of the good sources of liquid energy for automobiles and industries. The bioethanol market has continued to grow rapidly in recent years. Thai government aims to increase ethanol consumption from 1.2 billion liters in 2015 to 3.3 billion liters by 2021 and up to 4.1 billion liters by 2036. Z. mobilis, a gram-negative bacterium, is considered as an alternative organism in large-scale fuel ethanol production. The bacterium Z. mobilis is a highly potent ethanol producer already used in industrial-scale fermentations which converts sugars to ethanol and carbon dioxide. Levans are natural polymers of the sugar fructose found in many plants and microbial products. They are formed as an undesirable by-product of sugar juice processing. This project aimed to study survivor rate of Z. mobilis encapsulated at different concentration of sodium alginate 2%, 2.5% and 3%., from simulated practical conditions including simulated food tract condition (acidic pH at 1.55 and 0.6% bile salt) and high temperature environment (85°). The encapsulated beads were separated into four different sizes according to their average size by sieving process. Results indicated that survival rates of encapsulated cells of Z. mobilis were significantly higher (p < 0.05) from all simulated conditions compared to free cells. Furthermore, the highest survival rate was obtained from sieve 10 with 3% sodium alginate for both heat and bile salt tests, while the lowest survival rates were performed by 2% alginate beads obtained from sieve 70 with survival rate of 19.52% and 14.72%, and 0.22% and 0.77%, respectively. Levan production was also determined from encapsulated cells providing the highest survivor rate which was beads from sieve 10 of 3 % sodium alginate. Results showed they that there was no significant difference (p > 0.05) in levan production between free cell and encapsulated cells from high temperature condition test.
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    The Effect of Emotional Attachment on the Impulse Purchasing Behavior: A Case of TV Home Shopping
    (Assumption University, 2015-08) Nucharee Supatn
    TV home shopping is one of marketing strategies under the direct response marketing paradigm. This strategy does not emphasize on the brand creation or using traditional marketing channels but it aims to attract the consumer emotionally while immediate purchase of the customers is expected. TV home shopping business is now expanding in Thai market. There are couple TV channels operating as the TV home shopping channels while several TV home shopping programs are presenting on many cable and free TV channels throughout the day. TV home shopping is different from other marketing channels in various aspects such as nature of the TV program that is active and stimulating, products characteristics that are mostly different from the products available on the traditional channels, price and promotion which is usually the highlight of the TV shopping, as well as convenience to buy from the TV program. It is no need for the customers to leave their home to search and buy products. Just watching TV and making a phone call , the products can be delivered, door-to-door, to their home. Impulse purchasing behavior of the customers is the key goal of the marketers when using this strategy. This research aims to identify the factors that influence customer's impulse purchasing intention to buy products from the TV home shopping programs. Apart from the aforementioned factors, mediating roles of emotional response and emotional attachment that are activated when watching the TV home shopping program are emphasized. The questionnaire survey was designed. A total of 949 data sets from customers who have and have no direct expenence on buying from TV home shopping program were collected. Structural equation modeling was performed to test the relationship among all proposed factors. The results indicated that attractiveness of the TV program, product differentiation, and price & promotion had positive and significant influence on the emotional response and emotional attachment but trustworthiness of the TV program had no influence on both emotional constructs. Price and promotion and emotional attachment were found to have direct influence on the impulse purchasing intention. Indirect _ influences of attractiveness of the program and product differentiation through emotional response and emotional attachment were illustrated but the direct influences of these factors were not found. Trustworthiness of the program, convenience to buy, uncertainty on the buying process and emotional response had no significant influence on the impulse purchase. Some different impulse purchasing process of the experienced and non-experienced customers was found. First, the influence of attractiveness of the TV program on emotional response is significantly positive for the non-experience customers but not significant for the experienced customers. Second, the impact sizes of emotional response on impulse purchase were different between the two groups. However, both of them were not significant. Third, the influence of the emotional attachment on the impulse purchase of the non-experienced customers was higher than that of the experienced customers.
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    Formation and stability study of flavor oil emulsions stabilized by polyglycerol esters and by sucrose esters
    (Assumption University, 2016-05) Suwimon Ariyaprakai
    In this work, flavor oil emulsions contained 5 wt% oil and 0.75 wt% emulsifier were formulated by using different combinations between flavor oils and food emulsifiers. Orange oil (00), peppermint oil (PO), polyglycerol monostearate (PGE), and sucrose monostearate (SE) were employed to form emulsions by ultrasonic homogenization. Heat stability (storage at 100°C for 30 min) and freeze-thaw stability (storage at -20°C for 22 h. and at 30°C for 2 h.) of emulsions were investigated by observing droplets under a microscope, determining mean droplet sizes, and measuring amounts of destabilized oil. Ostwald ripening stability of emulsions was determined by measuring the droplet size distribution changes over 48 days of storage. The results showed that flavor oil emulsions stabilized by PGE and by SE were heat stable. Interestingly, flavo.r oil emulsions stabilized by PGE had better freeze- thaw stability compared to emulsions stabilized by SE. This property of PGE was suggested from polyglycerol interfacial layers reduced ice crystallization and reduced coalescence. The flavor oil emulsions stabilized by either PGE or SE underwent through Ostwald ripening destabilization and the ripening stability was improved by using mixed emulsifiers between PGE and SE. The information from this study could be useful for creating formulations of flavor oil emulsions that suitable for future applications in foods and beverages.
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    Insight into internally displaced persons in Bangkok Metropolis, Thailand
    (Research Institute of Assumption University, 2010) Preecha Methavasaraphak ; Chatchayodome Pulpol ; Narong Chumsupanwaree ; Juthaporn Wannarat ; Jiraprapa Lakkam
    This research study aims to explore ways of life of internally displaced persons (IDPs) in Bangkok Metropolis, Thailand. The study focuses on three groups of IDPs; namely invaded community IDPs, under the bridge IDPs and homeless IDPs. In general, the IDPs have different backgrounds and places of origins, but share similar causes of displacement. The displacement is commonly resulted from the economic, social, and health-related factors. In some cases, the IDPs seek to escape from their so-called surrounding environment. Nowadays, the IDPs live in every part of Bangkok Metropolis. They struggle to earn their living and hardly receive any help from the government. The majority of the IDPs do not plan for their future but hope for a better life for their offspring. None of the government agencies are directly in charge of tackling the IDPs problem. The operations are scattered amongst government agencies from ministerial to local levels. This leads to redundant work, lack of cooperation and lack of continuity. The unclear government policy on the IDPs problem also results in vague operations. Furthermore, administrators have different perspectives towards the IDPs and handle the problem differently. In some district offices, administrators use a compromise measure to handle the IDPs while others take a sever measure to crack down the problem. Some administrators simply ignore the IDPs problem. Some government officers at an operational level would like to solve the problem for the IDPs but are unable to extend any help. Without a clear policy, their helps may jeopardize a violation of the rules and regulations. Regarding the social effects, the IDPs cause stress, intimidation, pollution to the environment, physical harm and damage to properties.
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