• Journal of Distribution Science
• /
• v.18 no.7
• /
• pp.73-81
• /
• 2020

Purpose: This research examines the factors that influence organic food purchasing decisions of kindergartens in Ho Chi Minh City, Vietnam. Research Design, Data, and Methodology: A mixed-method research was utilized in this study. It included a focus group of 10 participants and a survey of 304 respondents, (quantitative research) who are employed in the selected kindergartens, using both online and paper surveys based on nonprobability and convenient sampling. The SPSS and SmartPLS 3 software were used to analyze data. Results: a) Eight factors affect the purchase decision of kindergartens; b) Environment Attention, Normative Beliefs, Trust belief on brand, Cost of meal set, and Reference group positively affect Intention behavior; c) Feeling safe positively affect Perceived Quality Product. Perceived quality of product and Intention behavior positively affect organic food Purchase Decision of kindergartens. Conclusion: Eight factors affect organic food purchasing decisions of kindergartens in Ho Chi Minh City. This study offers recommendation and solutions for a stable output of organic products in Vietnam, and ways to popularize them within the community.

• Korean Institute of Interior Design Journal
• /
• no.40
• /
• pp.102-108
• /
• 2003

Currently, there is no facility standard for a city public health center. The facility standard of rural public health center is referred to architectural plan of city public health center. This study is about architectural plan of the city public health center and have been in 7 public health centers in Daegu investigated. Conclusions can be summarized as follows: 1) The Mother and child hygienic section, area ratio which is presented by the facility standard of rural public health center must be increased in case of city public health center since function-reinforcement of the mother and child hygienic section is required. 2) Business section, the area ratio which is presented by the facility standard of rural public health center must be diminished for city public health center because it has been excessively allocated.

• Journal of Life Science
• /
• v.20 no.3
• /
• pp.365-373
• /
• 2010

To monitor newly emerged influenza virus variants and to investigate the prevalence pattern, our laboratory performed isolation of the viruses from surveillance sentinel hospitals. In the present study, we analysed influenza A/H1N1, A/H3N2, B viruses isolated in Busan during the 2006/07 and 2007/08 seasons by sequence analysis of the hemagglutinin (HA1 subunit) and neuraminidase (NA) genes. The isolates studied here were selected by the stratified random sample method from a total of 277 isolates, in which 15 were A/H1N1, 16 were A/H3N2 and 29 were B. Based on the phylogenetic tree, the HA1 gene showed that A/H1N1 isolates had a 96.7% to 97.7% homology with the A/Brisbane/59/2007, A/H3N2 isolates had a 98.4% to 99.7% homology with the A/Brisbane/10/2007, and B isolates had a 96.5% to 99.7% homology with the B/Florida/4/2006(Yamagata lineage), which are all the vaccine strains for the Northern Hemisphere in 2008~2009 season. In the case of the NA gene, A/H1N1 isolates had 97.8% to 98.5% homologies, A/H3N2 isolates had 98.9% to 99.4% homologies, and B isolates had 98.9% to 100% homologies with each vaccine strain in the 2008~2009 season, respectively. Characterization of the hemagglutinin gene revealed that amino acids at the receptor-binding site and N-linked glycosylation site were highly conserved. These results provide useful information for the control of influenza viruses in Busan and for a better understanding of vaccine strain selection.

• International Journal of Computer Science & Network Security
• /
• v.21 no.7
• /
• pp.1-7
• /
• 2021

An amazing growth in the field of Internet of Things (IoT) and Blockchain based smart cities from both industry and academia has been witnessed in the recent years. There are many smart applications such as intelligent transportation, smart banking, improving the life style of citizen, energy consumption and managing the waste in the city, handling home needs are supporting the Smart city concept. These applications are profoundly supported by the advanced technologies like Blockchain as well as IoT in the recent past. Smart cities can be supported by the Blockchain core concepts such as secure, transparent, decentralized and immutable nature. Still, Blockchain and IoT technologies implementation in smart cities are in their early stages and significant research efforts are desirable to integrate them. This review article explores the roles and responsibilities of Blockchain and IoT in building smart cities.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.23 no.7
• /
• pp.1-7
• /
• 2009

The research aims at providing data needed for planning the lighting of a study room by comparing the lighting environments of study rooms for urban and rural juveniles. The subject of the research was 300 students in middle schools in Daegu and Checngdo-gun, Gyeongsangbuk-do (Daegu 150 houses and Cheongdo 150 houses), and their study rooms were examined. The following is the result of the research. First, rural students stayed more time in their study room than urban students. The task that rural students (studying) and urban students (studying and using computer) all did in their study room was mainly visual work Second, although the sizes of rural study rooms were bigger than those of urban study rooms, urban study rooms had more light sources than rural study rooms. In the rate that of having a task lighting, the city(87.1[%]) was higher than the country (45.7[%]). However, the rate of using a task lighting was lot high in both the city and the country. Third, the result that compared the average values of illuminations on desk planes was that the average value of the city was 3.4 times higher than that of the country. Also, the average value of the country did not meet the standard illumination of Korean industrial standards (KS). In particular, it did not reach the lowest standard. The result is related with that only 52[%] of students who had a task lighting used it. Finally, the satisfaction of lighting environment in the city was generally higher than the country. Especially, although the country had a low illumination, the user showed a high satisfaction. It indicates that people living in the country need to understand about the needs of illumination.

• Journal of the Korean Institute of Rural Architecture
• /
• v.20 no.2
• /
• pp.19-28
• /
• 2018

This study investigated the basic data of architectural design about framework dimensions inherent in a folk house of Yeosu city generally and systematically. We investigated the common dimensions of framework constitution for folk house (main building) seen a lot in Yeosu city. Most of the folk houses in Yeosu city were common people houses built from the end of 19th century to the 1960s and have maintained the same style for a long time. As a result of the study, common dimensions were calculated in two ways. One is Front toi/3ryang house and the other is Front/back toi/2kozu5ryang house. Front/back toi house was large in the case of full width, total height, and member thickness but, width of the front kan is no big difference. In other words, the scale of Front toi house and Front/back toi house is difference only in the rest except front kan (width). Among calculated common dimensions, the front kan of Front toi house and Front/back toi house in the plan, the kitchen is the widest, and the size is the same at 8.7 chucks degree. The next became small little by little in order of room 1(main room), room 2(center room), room 3(end room). As a result, the size of the room 3 of Front toi house reaches 7.7 chucks, and room 3 of Front/back toi house reaches 8.0 chucks. In the section dimensions, pillar height is in sum of floor height and pillar core height, Front toi house is 7.9 chucks, and Front/back toi house is 8.2 chucks. The investigation of basic data of architectural design is not only makes possible to grasp specific and simple to three-dimensional universal aspect on framework dimensions, but also documentation of folk house design know-how is done, and the architectural design standards of Korean folk house is written in the contents according to the area.

• Journal of Hydrogen and New Energy
• /
• v.26 no.1
• /
• pp.15-20
• /
• 2015

During the liquefaction of hydrogen, the ortho hydrogen is converted into the para form with heat release that evaporates the liquefied hydrogen into the gaseous one backwards. The ortho-para conversion catalysts are usually used during liquefaction to avoid such boil-off. In order to compare and analyze the performance of the ortho-para hydrogen conversion catalysts, in-situ FT-IR device was designed and manufactured to measure the para hydrogen conversion rate in real-time. $LaFeO_3$ and $La_{0.7}Sr_{0.3}Cu_{0.3}Fe_{0.7}O_3$ perovskite catalysts were prepared by the citrate sol-gel method and their spin conversion characteristics from ortho to para hydrogen were investigated by in-situ FTIR spectroscopy at 17K. It was found that the spin conversion was affected by surface area, particle size, and crystallite size of the catalysts. Thus, the $La_{0.7}Sr_{0.3}Cu_{0.3}Fe_{0.7}O_3$ perovskite catalyst that had higher surface area, higher crystallite size, and smaller particle size than $LaFeO_3$ showed the better spin conversion property of 32.3% at 17K in 120min interaction with the perovskite catalysts.

• Journal of dental hygiene science
• /
• v.2 no.2
• /
• pp.69-73
• /
• 2002

The purpose of this study was to obtain baseline data for developing oral health education program. The questionaire about oral health knowledge and behaviors were given to 1419, 12 year-old children who lived in Seongnam City. The results were obtained as follows; 1) Of respondents, 46.2% visited dental offices within a year. And 33% of them were for the purpose of routine examinations and prevention. 2) 67.1% of them exhibited toothbrushing before bedtime and only 11.3% and 8.9% of them toothbrushed after between-meal intake and lunch. 3) 47.7% of them experienced dental health education programs and 72.3% of the programs had been during elementary school days. 4) 56.2% of them chose dentifrices without standards and 21.6% of them considered the presence of fluoride. 5) Of respondents, 57.4% and 46.4% knew the importances of toothbrushing and dietary pattern. But only 18.7% and 8.5% of them knew the methods of using fluoride and scaling. 6) 33% of them replied negatively to the probabilities of preventing dental caries. 7) Also, it is necessary to expand the oral health education programs for 12 year-old children in Seongnam City and include the annual screening dental examination, toothbrushing, dentifrice selection, using fluoride and scaling.

• The Korean Journal of Health Service Management
• /
• v.7 no.3
• /
• pp.287-296
• /
• 2013

The aim of this study was to compare the regional difference of death from intentional self-harm. The analysis was based on data of intentional self-harm deaths (31,450) from the 2010-2011 vital statistics of Korea. The suicide rate (per 100,000 population) was 46.2 in male and 22.3 in female. Gender ratio (male / female) of suicide rate was 2.07, and Jeju province had the lowest gender ratio (1.82), and Chungbuk province had the highest gender ratio (2.42). In the age-gender standardized death rate (per 100,000) of self-harm by region, the highest suicide rate was observed in Gangwon province (44.8) and Chungnam province (44.3), and the lowest in Seoul metropolitan city (28.9) and Ulsan metropolitan city (29.2). There was a significant increase in the rate of suicide in city areas (odds ratio: 1.11, 95% CI: 1.08-1.13), county areas (1.62, 1.56-1.67) as compared with the rate of suicide in metropolitan areas. The commonest methods of suicide were hanging (53.7 percent), self-poisoning by pesticides (16.8 percent) and jumping from a height (14.3 percent). The methods used for suicide differed between rural (county) and urban areas (metropolitan city and city). In county areas, 43 percent of suicides used pesticides as compared to only 7-18 percent of those in urban areas. In urban areas, jumping was more common (13-17 percent vs. 6 percent). There were no difference in hanging between urban and rural areas. The odds ratio of death by pesticides was 9.86 in rural areas compared with death rate of metropolitan areas. The odds ratio of death by jumping was 0.59 in rural compared with death rate of metropolitan areas.

• Journal of the Korean Institute of Educational Facilities
• /
• v.24 no.6
• /
• pp.7-12
• /
• 2017