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Girder Section of Continuous Bridges Spliced by Partial Post-Tensioning (부분 포스트텐션닝 방법에 의해 연속화된 교량의 주형단면)

  • 이환우;곽효경;송영용
    • Journal of the Korea Concrete Institute
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    • v.12 no.6
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    • pp.43-50
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    • 2000
  • In this paper, a new splicing method was applied to design the girder section of bridges with the span length of 25m, 30m, 35m, 40m and 45m. A U-type precast prestressed section was also determined for each bridge. Additionally, the sectional area, beam depth and Guyon's efficiency factor of the spliced U-type sections in each span were analyzed in comparison with the present I-type PSC bridges. As a result, in spite of an increase of 31%∼50% in the sectional areas compared with the I-type precast girders, the spliced U-type the beam depth of the spliced U-type girder was designed as 2,050 mm compared with the I-type precast girder of 2,600mm in a 40m span bridge. The sectional efficiency factors of the spliced U-type sections were analyzed as 0.76∼0.99. It shows that the spliced U-type sections ar of a superior structural efficiency in contrast to the average sectional efficiency factor of 0.66 value in the I-type girders.

Outdoor Weathering Test for used Construction Urethane Type Sealants (건축용 우레탄 실란트의 옥외폭로시험평가 방법 개발)

  • Lee, Sang Kook;Bae, Kee Sun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.05a
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    • pp.69-70
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    • 2017
  • In Korea, silicone type sealant is widely used for construction site. Before the silicone type, urethane type is one of the main type sealants. However, the weathering property is less than the silicone type, the urethane type is replace by the silicone one. Still the urethane type is used for the inside of the buildings for the perimeter of the window. The silicone type sealants are better in weathering property than those of the urethane type sealants. Except the weathering property urethane type sealant has its own advantage like movement property, low cost and so forth. There are many research results for the outdoor weathering of the sealants, but in Korea there are no results for the outdoor weathering for construction sealants. This research is focused on the outdoor weathering of the urethane sealants, how to measure the degradation, and compare the products which used in Korea. The outdoor weathering test is usually time consuming, thus we designed specialized device for accelerating the result.

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Combination of the Verb ha- ′do′ and Entity Type Nouns in Korean: A Generative Lexicon Approach. (개체유형 명사와 동사 ′하-′의 결합에 관한 생성어휘부 이론적 접근)

  • 임서현;이정민
    • Language and Information
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    • v.8 no.1
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    • pp.77-100
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    • 2004
  • This paper aims to account for direct combination of an entity type noun with the verb HA- 'do' (ex. piano-rul ha- 'piano-ACC do') in Korean, based on Generative Lexicon Theory (Pustejovsky, 1995). The verb HA-'do' coerces some entity type nouns (e.g., pap 'boiled rice') into event type ones, by virtue of the qualia of the nouns. Typically, a telic-based type coercion supplies individual predication to the HA- construction and an agentive-based type coercion evokes a stage-level interpretation. Type coercion has certain constraints on the choice of qualia. We further point out that qualia cannot be a warehouse of pragmatic information. Qualia are composed of necessary information to explain the lattice structure of lexical meaning and co-occurrence constraints, distinct from accidental information. Finally, we seriously consider co-composition as an alternative to type coercion for the crucial operation of type shift.

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A Study on the Optimization of Ballast Water Treatment System for Scale-up (선박평형수 처리장치의 Scale-up을 위한 조건 최적화 연구)

  • Kang, Ahyoung;Song, Ju Yeong
    • Korean Chemical Engineering Research
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    • v.54 no.5
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    • pp.630-635
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    • 2016
  • In the prior work, we studied a ballast water treatment apparatus, which is secondary pollution free by using physical treatment of shear stress. The principle of this apparatus is smashing various microorganisms by shear stress generated between stationary outer cylinder and revolving inner cylinder. Because of various magnitude of shear stress according to the inner cylinder surface type and revolution speed, an appropriate surface type and optimum revolution speed should be studied by consecutive experiment to determine the reference data for commercial apparatus. Through a comparative study of disk type and cylinder type of ballast water treatment apparatus, cylinder type is turned out to be superb to disk type. In this study, we studied to determine the superior collaboration of cylinder type, groove type and knurling type of inner cylinder to non patterned outer cylinder, and to optimize the revolution speed and flow rate according to the gap between inner cylinder and outer cylinder. As a result, we could get perfect sterilization effect at groove type under the conditions of 250 mL/min of flow rate at 8,000 rpm and 500 mL/min of flow rate at 10,000 rpm respectively.

Subjectivity Type Analysis Study of Single-person Households on Meal Kit Products of Food Service Industry (외식업체 밀키트(Meal Kit)상품에 대한 1인가구의 주관적 인식유형 분석연구)

  • Kim, Chan-Woo;Lee, Kang-Yeon
    • The Journal of the Korea Contents Association
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    • v.20 no.4
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    • pp.406-415
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    • 2020
  • This study applies Q methodology that can extract subjective opinion or recognition structure for each single household whose Meal Kit products developed and marketed by catering companies according to the demographic structure that changes socially. Implications were analyzed. As a result of subjective recognition type analysis in this study, four types were derived, and each type was named according to its specificity as follows. Type 1 (N = 6): Appearance Assessment Purchase Type, Type 2 (N = 6): Price Comparison Purchase Type, Type 3 (N = 10): Brand Trust Purchase Type, Type 4 (N = 2) : Easy Cooking Purchase Type was analyzed for each unique feature type. In this study, we analyzed the subjective opinion or recognition structure of single-person households whose Meal Kit products are the main demand groups, and suggested the direction and improvement measures for future food product development and launch for single-person households through the analysis by type. The purpose of this study is to provide academic implications based on the analysis results.

Effects of Work Attitude of Fashion Models on Job Satisfaction and Turnover Intention (패션모델의 직무스타일이 직무만족도 및 이직의도에 미치는 영향)

  • Lee, Jung-A;Kim, Young-Sam
    • Journal of the Korean Society of Costume
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    • v.66 no.3
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    • pp.147-161
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    • 2016
  • This study analyzed the effects of job style on job satisfaction and turnover intention of fashion models, and the difference in the job style, job satisfaction and turnover intention by model activities period. Data was collected by surveying fashion models with more than 10 modeling experiences, and 230 responses were used in the data analysis. The results of were as follows: First, the job style of fashion models were classified into professional ability type, social relationship-focused type, future-oriented type and body-boasting type. Job satisfaction was classified into satisfaction with working conditions, satisfaction with model activities, and satisfaction with relationships. Turnover intention was classified into intention to change jobs, and intention to quit modeling. Second, being a professional ability type had a negative effect on satisfaction with working conditions, whereas being a future-oriented type had a positive effect on it. The professional ability type and social relationship-focused type had a positive effect on satisfaction with model activities, and the social relationship-focused type had a positive effect on satisfaction with relationships. Third, the future-oriented type and body-boasting type had a negative effect on the intention to change jobs. The social relationship-focused type, future-oriented type and body-boasting type had a negative effect on the intention to quit modeling. Fourth, there were significant differences in the professional ability type, human relationship-focused type, body-boasting type, intention to change jobs and intention to quit modeling by model activities period. Therefore, it is necessary for domestic fashion models to have the appropriate attitude to develop features and competency required for modeling projects and if improvements are made to enhance job satisfaction of fashion models, the fashion modeling industry is expected to make further developments.

Extended Indications of Bilhaut-Cloquet Procedure for Type III and IV of Duplicated Thumb (무지 다지증 III, IV형의 치료에 Bilhaut-Cloquet 방법의 적극적 이용)

  • Lim, Young-Bin;Seul, Jung-Hyun;Nam, Hyun-Jae;Woo, Sang-Hyun
    • Archives of Plastic Surgery
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    • v.38 no.6
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    • pp.821-828
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    • 2011
  • Purpose: The authors applied Bilhaut-Cloquet procedure to Wassel type III and IV duplicated thumb, which was limited to patients with Wassel type I, II. This procedure was applied in order to improve the growth potential, range of joint motion, joint stability and cosmetic outcome. Methods: Sixteen patients received Bilhaut-Cloquet procedures to correct duplicated thumbs from May, 2005 to December, 2010. Seven patients were Wassel type III, nine patients were type IV. This procedure was applied not only to balanced type, but also unbalanced type or convergent type. Five patients were balanced type and eleven patients were unbalanced type. Convergent type of Wassel type IV was three. Sex ratio was the same, mean age at the operation was 20.1 months old (8~52 months old). Angular deformity, joint stability and range of joint motion and cosmetic outcome were considered together and estimated in Tada score. Also, postoperative subjective satisfaction score of the parents was evaluated by a 100-points scale. Results: Mean subjective satisfaction scored 75 points at 28 months after the operation. Radiologic study showed bony union of proximal phalangeal bone and stable joint in all patients. Range of motion was mean 20 degrees in interphalangeal joint and mean 73 degrees in metacarpophalangeal joint. Tada score showed 'good' in eleven patients (68.8%), 'fair' in three patients (18.7%) and 'poor' in two patients (12.5%). In seven patients those who were able to follow up for a long term showed no significant difference in length of proximal and distal phalangeal bones compared to the opposite thumb. Conclusion: Bilhaut-Cloquet procedure can be applied not only to balanced type of Wassel type III, IV duplicated thumb, but also to unbalanced type or convergent type that focused on functional reconstruction and cosmetic improvement.

Relationship between Juvenile Delinquency, Sensation Seeking, and Impulsivity: Focusing on Delinquency-Onset Type (청소년 비행과 감각추구성, 충동성 간의 관련성: 비행 시발 시기를 중심으로)

  • Yoon, Eon Jung;Kim, Kyong Yeon
    • Human Ecology Research
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    • v.52 no.6
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    • pp.639-649
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    • 2014
  • The main purpose of this study was to find the relationship between the delinquency-onset time in the source and the continuity of delinquency. In order to achieve this objective, we divided 350 first-year high school students into three groups early-onset type, late-onset type, and non-delinquent adolescents on the basis of the delinquency onset. The results of this study were as follow: (1) for the boys, the early-onset type shows a higher continuity of delinquency than both the late-onset type and the general adolescents. On the other hand, for the girls, the early-onset type shows a higher continuity of delinquency than the late-onset type, but there was no difference in the persistence duration between the late-onset type and the non-delinquent adolescents. (2) For the boys, the examination reveals that the early-onset type has a higher degree of sensation seeking and impulsivity than the general adolescents. In addition, the early-onset type shows a higher degree of sensation seeking than the late-onset type, whereas the two show no difference in impulsivity. For the girls, sensation seeking did not show any difference depending on the delinquency onset. However, more impulsivity appeared in the early-onset type than in the late-onset type or the non-delinquent adolescents. (3) The relative priorities of variables determining the group to which the students belong on the basis of the delinquency onset are in the order of sensation seeking and juvenile impulsivity. Therefore, this study, suggests that the early-onset type requires a different kind of intervention than the late-onset type.

The Type Printing of First Ch'ing Dynasty Term (청대 전기의 활자인쇄)

  • Cho Hyung-Jin
    • Journal of the Korean Society for Library and Information Science
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    • v.29
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    • pp.345-382
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    • 1995
  • The type printing of first Ch'ing dynasty term in China is worthy to be studied because the type printing during that period included metal type, wood type, and clay type as well as the development phase was similar to Chosun dynasty culturally and technologically. This paper studied typography during the first Ch'ing dynasty term, including Shunzhi(1662-1722), Yongaheng(1723-1735), Qianlong(1736-1795), Jiaqing(1796­1820) period. The main results of the study is as follows. 1. The main body of type printing was bookstore, lecture-hall, and individual as well as the royal court that is the central government. 2. The content of type edition covers classics, history, philosophy, and literary works. Specifically, even though Wuyingdienjuzhenban series is excluded, the content includs study of the classics, class of the history, class of the philosophy, literature works that include collection works and novel and government official bulletin. 3. The printing technique of bronze type was very popular In Beijing. Jiangsu, and Taiwan. It's scale and production technique was more elaborate than in Ming dynasty. 4. Wood type was very popular in Beijing, Jiangsu, Zhejiang, Anhui, Sichuan, and Fujian. In addition to wood type, chinese ware type was applied to book printing in Shandong. However, most of them were wood type and they were used after Qianlong period. 5. The production technique of type was skilled enough to present the fine view of a style of type. The typesetting technique was improved as much as woodblock printing. With regard to the making technology of Chinese ink, the light and darkness of chinese ink was not even sometimes. But, the technology was improved significantly when comparing with the failure experience of printing that chinese ink was not developed in early type invention. 6. In case that the book was printed in bookstore with the intention of profit and the number of book was large, the proofreading attitude was rough. However, overally, it was made correction carefully applying the various methods of proofreading. 7. The support of government made a great contribution in the area of all printing technology, including production, typesetting, and brushing of type.

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Effects of Job Stress on Job Satisfaction in School Dieticians and Nutrition Teacher - Focus on the Moderating Effect of Interpersonal Relationship Type - (학교 영양(교)사의 직무스트레스가 직무만족도에 미치는 영향 - 인간관계 유형의 조절효과를 중심으로 -)

  • Ahn, Hyun-Ho;Kim, Hyung-Sook
    • Journal of the Korean Dietetic Association
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    • v.24 no.3
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    • pp.212-230
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    • 2018
  • The purpose of this study was to investigate the effects of job stress on job satisfaction according to interpersonal relationship type among school dieticians and nutrition teachers. The online survey was conducted from Oct. 26th to Nov. 7th, 2017 in 2,000 randomly selected dieticians and nutrition teachers in the capital area. A total of 453 collected questionnaires were used for analysis. SPSS v.21.0 Statistical Package Program was used for the statistical process. For the results regarding interpersonal relationship type of dieticians, open-type (73.3%) was the highest, followed by self-assertive-type (23.0%), isolated-type (2.6%), and careful-type (1.1%). Regarding overall job satisfaction, 'human relation' was the highest, followed by 'job itself', 'working environment', and 'personal rating & welfare system', in that order. According to interpersonal relationship type, in the case of 'open-type' or 'careful-type', job satisfaction was relatively high. Regarding overall job stress, 'job demand' was the highest, followed by 'lack of reward', 'organizational system', 'interpersonal conflict', 'occupational climate', 'job insecurity', and 'insufficient job control', in that order. In accordance with interpersonal relationship type, overall job stress index was high in terms of 'self-assertive-type' or 'careful-type'. For the results of analyzing the correlation between job satisfaction and job stress index, all areas showed statistically significant negative correlations. Multiple regression analysis was performed to study the effects of job stress on job satisfaction mediating interpersonal relationship type. Job stress had different effects on job satisfaction in terms of 'open-type' and 'self-assertive type'. In conclusion, different strategies are needed for dieticians with different interpersonal relationship types to improve job satisfaction and to reduce job stress.