• Proceedings of the Korean Society for Language and Information Conference
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• 2008.06a
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• pp.104-114
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• 2008

• Proceedings of KOSOMES biannual meeting
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• 2002.10a
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• pp.27-56
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• 2002

• IE interfaces
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• v.1 no.2
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• pp.13-24
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• 1988

Various models usable for finding desired configuration of FMSs are presented. Extensions on reported models are made and new models are also introduced. Usages and solution algorithms of each model are discussed.

• Magazine of RCR
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• v.19 no.2
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• pp.40-49
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• 2024

• Restorative Dentistry and Endodontics
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• v.35 no.4
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• pp.246-256
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• 2010

The purpose of this study was to evaluate a rotational stability of endodontic electronic motors by comparing the changes of rotational speed, depending on the number of usages and with/without static load. Twelve new endodontic electronic motors were used in this study. Non contact type digital tachometer was used for measuring the rotational speed of handpiece. True RMS Multimeter was used for measuring the voltages and the electric currents. All measurements were recorded every 10 seconds during 10 minutes and repeated 9 times. Five repetition was done per each electronic motor. To statistical analysis, student t-test, repeated measures and Scheffe's post-hoc tests were performed. In the same motor group, there was no significant difference in all measurements. In all groups, there was no significant difference in the amount of rotational speed changes depending on the number of usages and with/without static load. In the limitation of this study, the results showed that all kinds of endodontic electronic motors in this study had an established rotational stability. Therefore they could be safely used in root canal treatment with a reliable maintenance of rotational speed, regardless of the number of usages and with/without load.

• Journal of Korean Home Economics Education Association
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• v.16 no.4 s.34
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• pp.127-140
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• 2004

The purpose of this study was to find out the interior environment, teaching equipments and tools, practical usages and related problems of the Home Economics practice room as a special room of Home Economics in middle school. The data were collected with questionnaire through a mail from 150 teachers charged in the Technology $\cdot$ Home Economics of the middle schools in the Gyeonggi Province and Incheon Metropolitan City. There were Home Economics practice rooms in the most of the middle schools. The room was used for the Home Economics class as well as for many other activities. which sometimes disturbed the class in the room. The frequency of the usage of the room was relatively low and limited mostly to the cooking class and somewhat sewing class because of the lack of environmental equipment and facilities such as heating, cooling. ventilating systems and furnishings such as table. chair as well as teaching materials. etc. Teachers wanted to use the room for all units of the Home Economics class applied to various teaching methods in the room. The improvement of the interior environments and teaching materials could facilitate the variety of the class in the Home Economic practice room.

• Journal of Digital Convergence
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• v.14 no.8
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• pp.383-391
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• 2016

Purpose: This study was conducted to analyze the effect of ego resilience, peer attachment and mobile phone-related characteristics on mobile phones functional uses, focused on the use of SNS & messenger and music and internet in middle school students. Methods: The subjects were 217 middle school students in 2 cities. Results: The factors affecting mobile phones SNS & messenger usages were interpersonal relation, viability of ego-resilience in male, and communication of peer attachment in female. The factors affecting internet usages were curiosity of ego-resilience in both sexes. The factors affecting music usages were viability of ego-resilience in both sexes. Conclusion: Education and management about mobile phone functional use should be made, by intervening reflected subregions effect factors of peer attachment and ego-resilience.

• KIEAE Journal
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• v.9 no.6
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• pp.73-80
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• 2009

The purpose of this paper is to suggest rules and regulations about a bike parking facility, With the objective of expanding bike parking facilities for the comfort of bikers. In Korea, the requirements to establish the facility comply with several regulations like laws for the encouragement of bike usages, rules and regulations for the encouragement of bike usages, regulations of Gyeonggi Regional Corporation rules and Korea National Housing Corporation(Korea Land and Housing Corporation) and requirements for the approval of green buildings. Such rules regulate the number of parking spots depending on the number of nearby houses and the size of a parking facility. Amongst the foreign regulations about the facility is 'obligatory regulations for the establishment of a bike parking facility' in Japan. In the United States, all states apply rules about the bike facility to determine the number of bike parking spots in accordance with the number of car parking spots. Comparing Korean rules regarding the bike parking facility with those of foreign governments will give a good insight into the current situation of Korean regulations. In order to investigate the current usage of bikes, 30 houses in Goyang city, 35 schools, 16 retails shops and 20 medical centers were researched. Thereafter, a correlation test between the size of buildings and the number of bike parking spots was carried out. The result of the test indicates that there is a lack of space for bike parking. It is recommended that the bike parking facility be installed with a convenient access to a building in order to increase the rate of bike usages.

• English Language & Literature Teaching
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• v.13 no.3
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• pp.133-156
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• 2007

Although the understanding of English tense system is a crucial factor for communicative English learning and teaching for EFL students, it has been neglected over the years. As with other areas of the grammar, difficulties may arise from the nature of the system itself or from differences between time, tense and aspect. Consequently, many learners face a considerable difficulty with the English tense system as they are more often unable to grasp the basic conceptual differences of present/present continuous, past/present perfect, will/be going to along with many others. More concerning fact is that lots of instructors or so-called native English teachers seem not to be aware of the importance of teaching English tense system. The purpose of this study is to review and examine various theories and practical usages of tense in order to establish and/or present better methods for teaching tenses. This paper is focused on comparatively exact distinction of time, physical notion from tense, grammatical category as well as sequences of tenses in view of school grammar and communicative function. At the end or middle of each chapter, efficient teaching and learning techniques or strategies on tenses are suggested to help instructors or learners who relentlessly face confusions in understanding tense and its usage for communicative English learning and teaching. This study attempts to influence learners' ability to recognize and write tense in authentic contexts not to mention spoken English.

• Korean journal of food and cookery science
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• v.32 no.5
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• pp.637-647
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• 2016

Purpose: This research was to understand the consumer awareness and consumption of natural carbonated drinks in Korea. Methods: A survey was conducted enrolling adults over the age of 20, residing in Seoul and its metropolitan area, and who consumed natural carbonated drinks. Data analysis of 544 valid samples was performed using SPSS 17.0. Results: The study showed that consumers mostly purchased natural carbonated water the most, primarily as a water substitute. However, many other usages that the consumer selected showed a possibility for a more versatile usages of natural carbonated drinks. As for the reason of purchase, 'interest in a new product' showed the highest mean value. The factor 'interest in a new product', 'interest in its effectiveness on skin care and diet', 'lower-calorie products', 'health benefits from the usage of natural flavoring and coloring' and 'recommendation from acquaintances' showed statistically significant higher values for women than men. The most frequent and preferred location for purchase were large discount stores, and the most preferred, major informants were in the order 'tasting events at marts and department stores', 'TV/radio advertisement' and 'recommendations from family/friends'. Analysis of the purchase intent showed high interest for non-alcoholic natural carbonated drinks. Conclusion: The study results can be used as baseline data to establish marketing strategies in the emerging natural carbonated beverage market.