• Journal of the Korea Safety Management & Science
• /
• v.13 no.2
• /
• pp.169-177
• /
• 2011

In this paper, the author devised new decision recommendation ordering method of items attributed by age to improve accuracy of recommender system. In conventional recommendation system, recommendation order is decided by high order of preference prediction. However, in this paper, recommendation accuracy is improved by decision recommendation order method that reflect age attribute of target customer and neighborhood in preference prediction. By applying decision recommendation order method to recommender system, recommendation accuracy is improved more than conventional ordering method of recommendation.

• The Journal of the Acoustical Society of Korea
• /
• v.7 no.4
• /
• pp.5-12
• /
• 1988

In order to know the preferred delay time of single reflection in relation in relation to the source signal, and to investigate whether or not there is any display in preference judgment of sound field between subjects of different nationalities, tests of subjective preference for musical sound fields with single reflection were preformed. The result showed that the preferred delay times agreed with the effective duration of auto-correlation function of the source signals, when the amplitude of reflection relative to the direct sound is 0dB. No fundamental disparity in series of judgement of sound field was found even for different series of Judgment with different music motifs. The result of preference test using different passages in single music showed that the fluctuation of the effective duration autocorrelation function over all the passages of the music was small. Thus, the preferred delay time can be determined by the coherence of autocorrelation function of the source signals and the amplitued of reflection.

• Journal of Navigation and Port Research
• /
• v.28 no.3
• /
• pp.193-198
• /
• 2004

In this paper, we estimate the difference of port preference and attributed importance by diving subjects of the survey into internal and external shipping companies considered as the main customers of port. From the results of conjoint analysis, it is found that there are differences in preference between domestic shipping companies and foreign ones. The difference in port preference shows; foreign shipping companies mark Shanghai port in the first place in the preference of transshipment port, while domestic shipping companies prefer Busan port. Similar results are applied to preference of rolling port. The result of the survey means it is necessary to group shipping company, when port is analyzed, because the port preference is subject to wether internal or external shipping companies. Also, it implies target marketing strategies should continuously be needed in order to maintain Busan port's preference gaining advantage over other ports and major target would be shipping companies.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.12 no.4
• /
• pp.75-88
• /
• 2010

The objective of this study is to investigate the fit preference tendency for ready-to-wears(jackets, skirts and slacks) of adult women and to find out the respective differences by the age range and the obesity level. The study method was the questionnaire survey with the subjects of 295 women of 20 up to 59 years of age. The questionnaire is composed of fit preference tendency, physical measurements, age, and occupation. For the data analysis, SPSS 18.0 program was used, and descriptive statistics, Crosstabs, ANOVA, Duncan's test, t-test and multiple regression were conducted. The findings were as follows. 1. Regarding the fit preferred for each part of jackets, skirts, and slacks, among ready-to-wears, the 'thing with some extra width' in every part was most favored, followed by the 'thing fitting perfectly.' 2. The differences were found in the fit preference tendency by the age of adult women. The fit preference tendency was higher among those in their 20's than among those of the other age range. 3. The differences were also found in the fit preference tendency by the obesity level of adult women. The fit preference tendency was high in the order of the emaciation, normalcy, and obesity types. 4. For all of three items, age and body type or body type influenced the preference by the fit level. As the age was higher and the body type was fatter, those items with some flexibility were preferred.

• Journal of the Korean Applied Science and Technology
• /
• v.39 no.4
• /
• pp.507-516
• /
• 2022

The purpose of this study was to investigate the effect of rotational preference on body stability based on COP and EMG analysis in an quiet standing after turn in the left and right directions. The subjects of this study were 16 subjects with a high lateral preference for the right hand and foot. The subjects of this study were 16 subjects with high unilateral preference for the right hand and foot, and three rotational direction conditions (QS: quiet standing, LT: 10 turns on the left, RT: 10 turns on the right) were performed. In order to evaluate the stability in an quiet standing after turning, the results were derived and analyzed using a COP plate and an EMG. As a result of the study, LT and RT were larger than QS for all COP variables, but there was no difference according to the direction of turning. In EMG, RT showed larger muscle activity than the QS according to the rotational direction in left and right gastrocnemius. In conclusion, although all subjects had a high right lateral preference, there was no effect of rotational preference in COP, and gastrocnemius showed the effect of rotational preference.

• Journal of the East Asian Society of Dietary Life
• /
• v.7 no.4
• /
• pp.475-483
• /
• 1997

The main purpose of this research is to provide Information regarding the preference and intake of calcium of middle school students in the Daegu area. The results were summarized as follows: The recognition score of calcium of the subjects was male 12.85 and female 12.45, respectively. Also the preference scores of calcium source foods of the subjects were male 3.60 and female 3.49. They preferred ice cream, laver, yoghurt and steamed fish cakes in that order, but they disliked cheese and loach soup. The daily calcium intake was 483.78mg(53.8% of RDA) for males and 545.91mg (68.2% of RDA) for females.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 2000.04a
• /
• pp.380-384
• /
• 2000

Effectiveness of information conveyance in reading is affected by several factors such as line length, letter size, line spacing arrangement as well as typeface itself. This study examined relative importance of these factors by asking people to read the texts that was constituted with non-square form letter and rank the preference of texts through conjoint analysis. In the case of reading time, justification was the most important factor, followed by leading, line spacing, letter width, line length, font size, font type in their order of importance. And in the case of preference decision, letter width was the most important factor, followed by font size, justification, line spacing, leading, line length, font type. The result will be useful in understanding how to consider human preference in the hangul typography.

• Culinary science and hospitality research
• /
• v.14 no.4
• /
• pp.203-216
• /
• 2008

The purpose of this study is to investigate the preference of Korean traditional food and kimchi among different age groups in order to find a way to increase kimchi consumption. For this study, data from 15 male respondents(5.2%) and 271 female respondents(94.8%) was used. Age distribution of total respondents were in their 20's(21.8%), 30's(32.7%), 40's(32.7%) and 50's(11.6%), which showed the rate of 40's was very high. Most of the groups showed similar rates over the question on "have to eat kimchi" and "don't need to eat kimchi", but the elders' preference was high while the youngers' was relatively low. Therefore, the preference of kimchi has a small gap between the age groups, but all of them like kimchi in general.

• Journal of the Korean Society of Food Culture
• /
• v.13 no.5
• /
• pp.497-507
• /
• 1998

The purpose of this study was to investigate the perception and preference of 'Jook' among people to find the effective way of promoting consumption of Korean traditional 'Jook'. This survey was conducted in Seoul, Suwon, Pyongtaek area. Among 450 questionnaires, 363 responses were collected and were analyzed by SAS program. The results were as follows: 47% was male,33.1% were 20 to 29 years old and 45% were students. Age and sex were main factors influencing the perception and preference of 'Jook' Older generation and women liked 'Jook' the most. 'Potjook', 'Hobakjook', 'Dakjook', 'Hinjook' were mostly preferred in order. 'Jook' was eaten because of 'easy to digest', 'special treat', 'convenience food', and 'therapeutic purpose'. But taste was the most preferred characteristics selecting 'Jook' except 'Hinjook'. In developing 'Jook' to be consumed, diversity and convenience should be placed in the first priority.

• ETRI Journal
• /
• v.26 no.2
• /
• pp.136-148
• /
• 2004

It is expected that an intelligent broadcasting service (IBS) will be able to provide broadcast programs based on user preference and program-associated information (metadata) in order to assist users in easy navigation of the program content being broadcast. In this way, users will be able to access program content anytime, anywhere, and in the manner they wish. This type of IBS will be a basis for future broadcasting services such as customized broadcasting or personal casting. In this paper, we introduce an agent-based multimedia broadcasting framework using the Foundation for Intelligent Physical Agents (FIPA) and MPEG-7 technologies within MPEG-21. We use a FIPA implementation called FIPA open source as a platform for exchanging user preferences and program information as FIPA messages between a server and its clients. The user preference is modeled as the User Preference description scheme in MPEG-7 multimedia description schemes. We discuss a framework structure and implementation for the IBS.