• Management Science and Financial Engineering
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• v.21 no.2
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• pp.13-23
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• 2015

This study addresses the question as to whether the option prices have useful predictive information on the direction of stock markets by investigating a forecasting power of volatility curvatures and skewness premiums implicit in S&P 500 index option prices traded in Chicago Board Options Exchange. We begin by estimating implied volatility functions and risk neutral price densities every minute based on non-parametric method and then calculate volatility curvature and skewness premium using them. The rationale is that high volatility curvature or high skewness premium often leads to strong bullish sentiment among market participants. We found that the rate of return on the signal following trading strategy was significantly higher than that on the intraday buy-and-hold strategy, which indicates that the S&P500 index option prices have a strong forecasting power on the direction of stock index market. Another major finding is that the information contents of S&P 500 index option prices disappear within one minute, and so one minute-delayed signal following trading strategy would not lead to any excess return compared to a simple buy-and-hold strategy.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2000.10a
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• pp.355-359
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• 2000

This paper presents design of an advertising E-commerce (electronic commerce) serve. using push technology which provides clients with multimedia information such as text, audio and video according to their setting information. In the most of existing E-commerce system, users visit the web site in person, see and buy goods. In this paper we show the new E-commerce format: Clients select a field of advertisement of what they want to see on the browser, then EC server sends the clients moving advertisements at regular intervals. Subsequently, the users see advertisements and buy goods. The server of this system was designed using push server that saves moving advertisements in the database and sends the user-specific advertisements to users. The system designed in this study is very an active system contrary to existing passive E-commerce systems.

• Korean Journal of Agricultural Science
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• v.42 no.4
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• pp.455-460
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• 2015

Even though many Korean consumers have bought environment-friendly fruits, including grapes and mandarins, farmers and suppliers still have little information about how they make a decision for the actual purchase in the real markets. Without the suitable information of purchase behavior of environment-friendly fruits, farmers and suppliers cannot set up the efficient marketing strategy which can create the better agricultural products for Korean consumers. The purpose of this paper is to analyze the consumers' purchase behavior of environment-friendly fruits in Korea. Especially, this study was focused on the grapes and mandarins, through the survey research and the frequency analysis. The results of study in this paper present a few findings useful as follows: First, Korean consumers have the strong concern of environment-friendly agricultural products, including fruits. Second, consumers usually buy environment-friendly fruits by two times per month. Third, consumers generally concern taste, freshness, and food-safety, when they buy environment-friendly grape or mandarin.

• Culinary science and hospitality research
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• v.23 no.8
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• pp.27-39
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• 2017

This study was to examine how consumption value of female consumers affects impulse consumption and purchase satisfaction when they buy bakery goods, present specific determinant factors that affect them, and identify its influencing factors. The survey was conducted with those who have bought bakery goods of female consumers in Seoul and Kyonggi area, using a convenience sampling method. After a total of 400 responses was collected, 366 responses were included for the multiple regression analyses in order to test the hypotheses. To summarize findings from this study, analysis of the first hypothesis showed that "emotional impulse buying," "stimulating impulse buying," "reminder impulse buying," and "situational impulse buying" among impulse buying factors in consumption value factors had positive effects. The second hypothesis analyzed that "emotional impulse buying," "stimulating impulse buying," and "situational impulse buying" gave positive impacts on "purchase satisfaction," while "reminder impulse buying" had no influence. Analysis of the third hypothesis demonstrated that "consumption value" had positive effects on "purchase satisfaction." These findings were significant to examine consumption value that show the consuming pattern of consumers, analyze influencing factors on impulse buying of female consumers, and further present marketing strategies used for advantageous tools with competing stores to bakery owners or marketers.

• Journal of Environmental Science International
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• v.22 no.8
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• pp.1063-1072
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• 2013

To overcome the ecosystem-crisis of resource depletion and climate change, we should maintain and develop a 'Sustainability' of our society. 'After-market' is defined like this : any market where customers who buy one product or service are likely to buy a related follow-on product. This is related to a automotive, electric and electronic, and remanufacturing industry. 'After-market' will be helpful for reuse and recycling of resources aspects, cost and economic efficiency, low-carbon, climate protection, and new industries and job creation effects, To promote 'After-Market', we need to guarantee the quality of products. In this regard, we refer and introduce a new standard, for example, BS8887, PAS141 and ISO20245 etc. In order to promote 'After-Market', first of all, product quality assurance and safety must be demonstrated in the process of reuse. Second, many aspects of a device that protects the rights of consumers to be provided. And third, the related laws and standards should be reviewed. Finally, original manufacturer's awareness for environmental protection and resource conservation and government's institutional support are needed.

• Culinary science and hospitality research
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• v.10 no.2
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• pp.1-15
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• 2004

This research was accomplished to prove that the actual using conditions of the funtional bakery products would be different by their sex, age group and income, and what would be main factor to choose them. This survey was examened for 268 subjects by the self-administered questionnaire method. 37% of subjects used the funtional bakery products once or twice a week. They normally paid for them 1,000-3,000 won(40%). The biggest merit of the fuctional bakey products was good for health, but high price was the weekest point of them. Over 63% of subjects answered they had the will to use the new functinal bakery products if they would be developed. Mainly they got the information of functional procuts in bakery. Females paid more than males to buy them and had stronger will to use the new procuts. As the age increased, the using frequency of fuctional bakery products also increased. The expences to buy for them once and the will to use new products increased according to income increment. Females thought more important factors as price, taste, and color than males. Twenties and forties answered price was more important than thirties and fifties.

• Journal of the Korean Society of Clothing and Textiles
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• v.22 no.7
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• pp.833-842
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• 1998

The purpose of this study is to (1) investigate on the impulse purchase tendency of women who buy women's character clothing brands and (2) to clarify the relationship between the women's impulse purchase tendency and the marketing factors, and the brand image. The subjects were 203 women in their twenties and thirties who had purchased the women's character clothing brands in last six months living in Seoul. The data were collected by self-administered questionnaire and were analyzed by frequency, percentage, t-test, clustering analysis and MDS(Multi-Dimensional Scale). The results of the study were as follows: (1)66.0% of the women were categorized as the group of high-degree of impulse purchase tendency and 34.0% of the women were identified as the group of low-degree of impulse purchase tendency. (2) In identifying the relationship between the marketing factors and the impulse purchase tendency, the group of the high-degree of impulse purchase tendency was affected by the marketing factors such as new and fashionable products, status of display, advertising and discout selling. (3) Brand image was not statistically significant according to the impulse purchase tendency. As a whole, 'Obzee' was recognized as unique-style and sexy brand, 'Time' and 'Mine' were thought as the reasonable-prince and basic-style brands, 'Deco' were clarified as the intellectual-image brand, and 'Ego' and 'Telegraph' were revealed as high-price-image brands.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.8 no.7
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• pp.2383-2399
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• 2014

Due to the low conversion rate of social commerce, its sustainability is questioned. To solve this problem, this study aims to verify the different antecedents between visit intention and purchase intention. For a visit intention, this study employs the concept of the scarcity heuristic and its momentary characteristic. The scarcity heuristic is created by a scarcity of time and quantity, and provisional coupons. In previous studies, the scarcity heuristic has often been treated as a major factor in which to influence purchase intention. However, this study examines the scarcity heuristic only as an antecedent of the visit intention, not of the purchase intention, because of its momentary characteristic. Contrary to previous studies, as this study expected, the attributes of the scarcity heuristic had a significant relationship only with the visit intention in social commerce. Additionally, the results suggest that there are two distinct intentions in social commerce: visit intention and purchase intention. This study verified that the antecedents of the two distinct intentions are different from one another. This study helps to understand why people visit social commerce sites regularly but do not buy.

• Journal of Korean Society of Forest Science
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• v.98 no.2
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• pp.203-211
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• 2009

The study was conducted to examine consumers' awareness and perceptions on forest certification and their willingness to buy and pay price premium for certified wood products especially for selected four wood products. A total of 136 residents in Seoul and Gyeonggi Province were interviewed in the autumn of 2008. Although only 24.3 percent of the consumers are aware of forest certification, 82.4 percent of the respondents recognized the need and significance of forest certification. In general, 77.2 percent of the respondents were willing to buy certified wood products. Majority of the respondents, 84 out of 136 respondents (61.8%) expressed their willingness to pay (WTP) from more than 0 percent to less than 10 percent. Consumers' average WTP for certified wood products was estimated to be 5.6 percent. From the results of the study, lower priced wood products, such as copier paper (WTP=9.8%) and wood frame (WTP=11.6%), have higher price premiums than high priced products, such as wood table (WTP=6.8%) and wood flooring (WTP=7.6%). In conclusion, there could be feasible markets for certified wood products in South Korea as four out of five consumer are willing to pay more for such products. For the forest certification system to be adopted and widely accepted, the perceptions of forest stakeholders including consumers should be further increased.

• Journal of the Korean Society of Costume
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• v.50 no.8
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• pp.29-41
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• 2000

This study was intended to grasp the actual condition of adult women's wearing foundation garments for the Korean adult women in their 20s to 40s. For this purpose, questionnaire research was conducted for 639 adult women in their 20s to 40s living in Seoul and Kyonggi Province. As for the reason for the purchase of foundation garments, It was found that the highest proportion of the responding adult women would buy brassieres when they were needed because the old ones were threadbare, followed by the purchase of brassiere when they caught their eyes in shopping around. As for the reason for the purchase of girdles, the highest proportion of the responding adult women could buy girdles when they were needed because their old ones were wornout, and next when bargain sale began at the department store or the large shopping center. The highest proportion of the responding adult women thought the source of information on foundation garments as the window display, followed by magazine. The adult women in their 30s collected information on foundation garments through the window display when buying brassieres or girdles. As for the product evaluation criteria of foundation garments, the highest proportion of the responding adult women thought highly of the feeling of wear in brassieres and girdles, followed by dimensions in brassieres and bodily correctability in girdles. As for the place of buying brassieres or girdles, the responding adult women showed it to be the department store. followed by the discount store and the well-known agency.