• Journal of the Korean Home Economics Association
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• v.41 no.8
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• pp.19-31
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• 2003

This study was intended to present the plan for preventing and solving the seriousness of the consumer problem perceived in the e-commerce. For this purpose, 723 questionnaires were distributed to university As a result of analysis, the following findings were obtained: 1) It was found that e-commerce users had higher knowledge of the degree of internet un, the ability to use information on the internet, the disposition of computerization, and e-commerce related consumer than e-commerce non-users. 2) It was found that e-commerce non-users had the higher level of perceived seriousness of the consumer problem than e-commerce users. Especially, it was found that e-commerce non-users had the high level of perceived seriousness of the consumer problem related to the problem of exchange, termination and after-sale nice and the leakage of exchange, termination and after-sale service and the leakage of private information e-commerce user. 3) It was found that university consumers' perceived seriousness of the consumer problem in e-commerce over the internet showed a significant difference in the ability to use information on the internet between e-commerce users and non-users.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2006.11a
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• pp.377-381
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• 2006

Recently, as economy grow and population increase we need to develop our coastal area and make good use of it for various purposes. That's why large structures are being installed on the sea. Some samples are petroleum storage tanks, pier of sea bridges. These are large structures which have been installed at coastal area. When we design such vertical cylinder, we should avoid too much construction expense caused by excessive designing or by lack of sufficient design. In order to prevent excessive expenditure, it is important to correctly calculate the force of waves acting on structures and predict the wave transformation. In this study, apply to VOF method based on Navier-Stokes equation and then discussed that nonlinear wave force and wave transformation. A comparison between the numerical model and existing experimental results showed nice agreement among them.

• Solar Energy
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• v.19 no.3
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• pp.85-91
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• 1999

This study represented experimental research on the flat-plate solar collector. The heat performances were measured the tube array surface temperature by thermal-couple. The solar collector($W{\times}H$) of $580{\times}1100$, various tilt angles of 30, 45, 60 degree and the internal tube number of 4, 6, 8, 10(ea) were utilized in the present investigation. It is found that the thermal concentration is higher as the tilt angle become larger and the solar tubes are more and more. In this stuby obtained results of following: The array of tubes in collector has the best nice in that the number of tube is eight and the tilt angle is 60 degree. The collect energy by each tube array shown high value by increase the number of tubes and tilt angles. In addition to, the collect energy depends on by the tilt angle than the number of tube.

• Journal of the Korean Graphic Arts Communication Society
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• v.28 no.2
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• pp.87-99
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• 2010

The ink which is left by sealed more than 6 months, it clogs head nozzle of machine due to precipitation and coagulation. In addition, if you stop printing about 3~4 hours in the middle of printing work, the head nozzles of printer could be naturally clogged. To prevent of this situation, worker should implement cleaning and checking head nozzle before hands. When the nozzle is clogged in the middle of work, running a head cleaning mode can clear the clogged nozzle. Yet, large amount of waste inks which are passed clogged nozzle will be remained after cleaning. It would be very nice that ink companies take the waste ink back by green marketing, but none of them are doing it currently. The purpose of this research is that making a black water-based recycle ink by waste inks which are left of nozzle clogging or passed expiration date. This recycle ink will improved working environment and reduce cost of disposing waste inks. Furthermore, it is very environment friendly and economical. It is called a recycle ink which is water-based black ink made by waste inks.

• Journal of the Korean Home Economics Association
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• v.41 no.12
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• pp.39-52
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• 2003

The purpose of this study was to investigate the status of school lunch program managers' disposal of food waste and food service management in elementary school lunch program. Questionaries were distributed to 243 school lunch program managers of elementary schools in Seoul and Incheon area. The statistical analysis of data was completed using SPSS program. The results were summarized as follows. The average score of school lunch program managers' environmental conservation consciousness was slightly high, which was found to be 4.0. Most food waste was mainly vegetables. The primary recycling methods of leftovers from the school food service operations were to using them as livestock feed(84.7％). The best way of food waste treatment recognized by school lunch program managers' was utilizing it as fodder for animals or fertilizer(54.1％). The average score that school lunch program managers' achieved in terms of food nice management considering environmental conservation was 3.8. The school lunch managers' opinions imposing environmental regulation on the corresponding firm was very strict. Based on the observed results, several recommendations are suggested：practical food management guideline and its related proper information, foodbank program.

• KIEAE Journal
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• v.11 no.2
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• pp.17-25
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• 2011

In order to provide basic data for designing the outdoor exercise environment to promote the health of the citizens, this study has analyzed the status of citizens' use of outdoor exercise places that have been supplied extensively recently and the factors affecting the citizens' choice of the places. A survey was made on 20 spots in 12 places where outdoor exercise equipment is installed to identify the characteristics of use and the factors affecting the selection of the spots and for the 1,733 survey sheets collected finally SPSS program was used to analyze the multiple answers. Major results of this research are as follows: First, since light exercise equipment mostly for bodily exercises has been installed, it has brought practical effects for the physically weak people, aged people and the people who scarcely exercise, while decreasing the users' economic burdens. Second, the scales of important factors the users think in selecting their exercise spots were 'spaciousness (2,028 times)' > 'accessibility (1,751 times)' > 'fitness (1,583' > 'supportability (1,445)' > 'community centeredness (1,260).' Third, the ratios of important factors regarding the choice of environment of outdoor exercise were 'near to walk (16.1%)' > 'nice natural environment (12.3%)' > 'always free to exercise (9.7%)' > 'shortage of exercise equipment (7.4%)' > 'possible to accompany family/neighbors (6.7%)' > 'no economic burden (6.5%).

• The Journal of Asian Finance, Economics and Business
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• v.6 no.2
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• pp.135-145
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• 2019

The paper aims to investigate the factors of brand equity affecting the purchase intention of car buyers in Ho Chi Minh City. The authors use qualitative method and quantitative research to study the matters, specifically using scales and data collected for Cronbach alpha reliability testing, analysizing the discovery factor of EFA, CFA and verifying the regression models through AMOS software with SEM linear modeling. The study proposes four factors: (1) brand awareness, (2) self-expression value, (3) perceived quality, (4) brand psychology impacting on the brand loyalty and intention to buy cars of customers. The results show that all four factors are statistically significant for positive brand loyalty and purchase willing. The results showed that brand loyalty positively affects consumers' intention to buy cars. Among the factors included in the study, the brand psychology is a new factor which developed by experts in the context of Vietnam. This is the first study in Vietnam to quantify clearly the element of "crowd psychology" affecting the interests and habits of Vietnamese consumers. This explains why Vietnamese consumers prefer brands that are familiar in the market and some new cars with nice models and colors suitable for Vietnamese psychology.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.14 no.3
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• pp.187-199
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• 1985

The low-temperatured radiant heating System like a panel heating system is recognized as nice means to make comfortable indoor environment. Perhaps, 'Ondol' would be a typical example of the Panel heating system. Nevertheless. Occupants in a radiantly heated Space which has an asymmetric radiant field may feel thermally discomfort due to the asymmetric radiation. The aim of this Study is to suggest the fundamental technical data for establishing Standards of thermally comfortable environment when designing a radiant heating System. Thermal distribution of indoor environment and the skin temperature of the occupants were measured at experimental room in KIER (Korea Institute of Energy and Resources). Whole/Regional thermal and comfort Sensation votes of the occupants were taken simultaneously in order to investigate the relationships between thermal environmental factor and the occupants' responses. The effect of an asymmetric radiation on thermal environment and the occupants' responses was analyzed by using a v.r.t.(vector radiant temperature). By this means, the thermally neutral limits for the ambient air temperature and the floor surface temperature by the occupants' responses were Obtained. And the recommended temperature limits of the indoor surface were derived from the experimental work and the theory of radiant and will provide thermal neutrality for man without any discomfort on the part of the body.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2018.06a
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• pp.55-55
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• 2018

Recently, amorphous oxides such as InGaZnO (IGZO) and InZnO (IZO) as a channel layer of an oxide TFT have been attracted by advantages such as high mobility, good uniformity, and high transparency. In order to apply such an amorphous oxide TFTs to a display, the stability in various environments must be ensured. In the InGaZnO which has been studied in the past, Ga elements act as a suppressor of oxygen vacancy and result in a decreased mobility at the same time. Previous studies have been showed that the InZnO, which does not contain Ga, can achieve high mobility, but has relatively poor stability under various instability environments. In this study, the TFTs using $IZO/Al_2O_3$ double layer structure were studied. The introduction of an $Al_2O_3$ interlayer between source/drain and channel causes superior electrical characteristics and electrical stability as well as reduced contact resistance with optimally perfect ohmic contact. For the IZO and $Al_2O_3$ bilayer structures, the IZO 30nm IZO channels were prepared at $Ar:O_2=30:1$ by sputtering and the $Al_2O_3$ interlayer were depostied with various thickness by ALD at $150^{\circ}C$. The optimal sample exhibits considerably good TFT performance with $V_{th}$ of -3.3V and field effect mobility of $19.25cm^2/Vs$, and reduced $V_{th}$ shift under positive bias stress stability, compared to conventional IZO TFT. The enhanced TFT performances are closely related to the nice ohmic contact properties coming from the defect passivation of the IZO surface inducing charge traps, and we will provide the detail mechanism and model via electrical analysis and transmission line method.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.3
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• pp.429-437
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• 2011

This study evaluated on the purchasing patterns for bakery products and the effects of brand image on consumers' purchasing power while living in the Seoul area. The questionnaires developed for this study were distributed to 400 males and females aged 20 and older. A total of 385 questionnaires were used for analysis (96.0%) and the statistical analysis, descriptive analysis, and $x^2$-test were completed using SPSS (version 14.0) software. When purchasing bakery products, 'taste' (59.7%) was most important followed by 'shape and size' (13.2%), 'ingredients' (11.7%), 'price' (7.5%), 'expiration date' (5.2%). 'origin of ingredients' (2.1%), and 'packaging' (0.5%). Subject showed significant differences in their purchase of bakery products based on characteristics including 'age' (p<0.05), 'occupation' (p<0.01), 'type of family' (p<0.01), and 'income' (p<0.1) The most influential factor in purchasing bakery products was 'material' (score=3.73), followed by 'name value' (score=3.56). Brand image of bakery had an effect on bakery products as 'present' (score=3.83), 'sanitation' (score=3.58). And, the most high respondent in basis of deciding brand image consumer's was 'clean and nice interior'(53.1%), followed by 'high quality ingredients and packaging'(23.7%).