• Title/Summary/Keyword: 일반드릴

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A Study on The Comparison of Mechanical Property Between The Staggered Stud Wood Wall and The Standard Wood Frame Wall (일반벽체와 교호 샛기둥 벽체의 역학적 성능 비교 연구)

  • Shim, Jae-Kwang;Kim, Gwang-Chul
    • Journal of the Korean Wood Science and Technology
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    • v.45 no.5
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    • pp.640-649
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    • 2017
  • A comparative research on the traditional standard wood walls and other light-frame wood walls is necessary to expand the base of wooden buildings and improve consumer satisfaction. Therefore, in this research we looked for new possibilities through comparison of performance between standard wood wall and newly presented staggered stud wood wall. First, the strength characteristics of staggered stud wood walls were evaluated and the those of standard wood walls were compared. The ultimate load of the standard wall was larger than that of the staggered stud wood wall, because the cross section of the wood making up the standard wood wall was larger than that of the staggered stud wood wall. However, the statistical analysis between the two groups didn't showed a significance of 95% confidence level. This means that, staggered stud wood walls have shown the possibility of replacing the standard wood wall. Because the cross-section of the stud in the staggered stud wood walls is smaller than that of the standard wall, the material can be saved. Therefore, staggerd wood stud wall is judged to be more economical than the standard wall. In addition, since the area of the insulation also increases, improvement of the heat bridge is also expected.

A study on academic achievements of college students admitted by admissions officer selection: K university case (입학사정관 전형 입학생의 학업성취도에 관한 연구: K대학교 사례)

  • Choi, Hyun Seok;Park, Cheolyong
    • Journal of the Korean Data and Information Science Society
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    • v.24 no.6
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    • pp.1149-1157
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    • 2013
  • In this study we compare academic achievements of college students admitted by admissions officer selection with those admitted by general selection. Two measurements of the academic achievements considered are GPA (grade point average) and relative ascending rank of GPA. By the comparison of the academic achievements, we would like to assess the effectiveness of the admissions office selection and then provide a basis for screening good students by that selection. The results of data analysis indicate that the academic achievements of admissions officer selection students tend to be lower than those of early general admission students and also those of regular general admission students tend to be higher than those of early general admission students.

Effect of Packing Methods on Green Powder Tea Quality during storage at Cold Temperature (가루차 저온 저장 중 포장방법별 품질변화)

  • Park Jang-Hyun;Bac Chang-Nam;Kim Yong-Ok;Choi Hyeong-Kuk
    • Food Science and Preservation
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    • v.12 no.1
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    • pp.1-7
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    • 2005
  • The effect of packing methods on the green powder tea were investigated by examining quality changes during cold stroage. Packing was performed with aluminum packs having an antioxidant and a wateiproofing agent in vacuum Alumiunum packing with treatment or not showed little changes till 2 months but after this period remarkable quality degradation were found in total nitrogen, total amino acids, tannin, caffeine, chlorophyll and fatty acids. The color changes of gieeness were -16.43 in one month and -10.11 in five months, respectively. Alumininum packing in vacuum was showed extention of storage period above one month.

Management Planning of Gondola Cars through Efficiency Analysis (효율성 분석을 통한 무개차 운용 방안에 관한 연구)

  • Kim, Kyoung Tae;Lee, Suk;Lee, Young Ho;Yang, Keun Yul
    • Journal of the Korean Society for Railway
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    • v.16 no.2
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    • pp.138-143
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    • 2013
  • Recently, the demand for rail freight has gradually decreased. In particular, the demand in Korea for open freight cars, which classification includes gondola cars, hopper cars and gravel cars has been significantly reduced. The role of gondola cars in the rail transportation market shrank to 14.5% in 2010 from 23.3% in 2001. The transportation demand of gondola cars in the long term is expected to be reduced further. Because some gondola cars have been converted to container cars and various containers are being developed to transport bulk cargo by container cars. However, gondola cars still play an important role in rail freight transport. Therefore, the management planning of gondola cars is needed in order to prepare for the long-term declining demand. In this study, we propose a future direction for the management planning of gondola cars through the effectiveness analysis of gondola cars operation.

Managers' compensation of venture firms listed on KOSDAQ (코스닥 벤처기업의 임원 보상)

  • Kang, Jin-Su
    • Management & Information Systems Review
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    • v.30 no.4
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    • pp.339-358
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    • 2011
  • This study analyzes whether there are differences in the level of compensation and pay-performance sensitivity between venture firms and non-venture firms listed on KOSDAQ. To test the above mentioned purpose, this study uses 726 firm-year data listed on KOSDAQ from 2006 to 2009. The results are as follow: First, we find that managers' compensation level of venture firms are higher than non-venture firms. Second, pay-stock performance sensitivity is higher than pay-accounting performance sensitivity in venture firms. Overall, because venture firms give a lot of stock-option to managers, compensation level of venture firms is higher than other firms. Also, venture firms set higher pay-stock performance sensitivity than pay-accounting performance sensitivity to mitigate short-sighted decision.

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Analysis of K-ABC Profile of Young Gifted Children and Ordinary Young Children (유아영재와 일반유아의 K-ABC 프로파일 분석)

  • Oh, Mee-Hyeong
    • Journal of Gifted/Talented Education
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    • v.19 no.2
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    • pp.241-260
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    • 2009
  • The purpose of this study was to contrast young gifted children with ordinary young children in K-ABC profile. The subject were 51 young gifted children and 51 ordinary young children, 2 to 4 years of age. Data of children's K-ABC profile were analyzed by Correlation and Crosstabs. The main results of this study were as follows: First, in the case of ordinary young children, there were significant positive correlation among 'Mental Processing Composite' and all sub-tests of mental processing composite except 'face memory' test, 'Achievement Scale'. In young gifted children, there were significant positive correlation among 'Mental Processing Composite' and just four sub-tests of mental processing composite, and there were no significant correlation between 'Mental Processing Composite' and 'Achievement Scale'. Second, there were no significant differences among all sub-tests' strength and weakness in young gifted children and ordinary young children. Third, young gifted children got higher score in 'Sequential Processing Scale' and 'Mental Processing Composite' than 'Achievement Scale'. But in ordinary young children, there were no significant differences among all K-ABC' sub-scales.

A Study of the Enhancing Educational Capacity of General High-school in Gyeongsangbuk-do : Focusing on Curriculum and Career Education (경상북도 일반고의 교육역량 강화 방안 - 교육과정 및 진로교육 측면 -)

  • Kwon, Dong-Taik;Kim, Jung-Hee
    • Korean Journal of Comparative Education
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    • v.24 no.3
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    • pp.25-45
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    • 2014
  • The system of high-school recently diversified, but there are criticisms that general high-schools relatively fall into crisis. The purpose of this paper is to discuss suggestion on the enhancing educational capacity of general high-school in Gyeongsangbuk-do. In this paper, there needs to be evoke sympathy for development, strengthen educational responsibility, substantially guarantee curriculum autonomy, pursuit diversity of student-customized curriculum, integrate curriculum and career education, and flexibly manage teacher selection and disposition for educational capacity of general high-school. In a career educational point of view, there needs to be organize curriculum coincidentally with students' career, aptitude and interest, to describe clearly roles of school and community for career education, and to guarantee the right of subject choice in school. We should believe normalization of general high-school is namely substantiality of career education.

A Comparative Analysis on the Operating System of Urban Railway & Conventional·High speed Railway (도시철도와 일반·고속철도의 운영방식에 관한 비교 분석)

  • Choi, Jong-Gil;Yun, Hak-Sun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.8
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    • pp.953-958
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    • 2015
  • Generally, Urban railway have special characteristics with short distance journey and minimum headway intercity transportation. These days, urban railway operators choose the driverless operation system without driver. On the contrary, Conventional & high speed railway utilize for long distance and high speed running. Because of special conditions of freight railway operation compared with urban railway, operation of conventional & high speed railway is showed very different characteristics. In this paper, We compares different operation scheme of urban railway and conventional & high speed railway and then present condition for train control system based on radio.

Effects of Trust, Stigma, Optimistic Bias on Risk Perception of Nuclear Power Plants (원자력발전소에 대한 공중의 신뢰, 낙인과 낙관적 편향성이 위험인식에 미치는 효과)

  • Song, Hae-Ryong;Kim, Won-Je
    • The Journal of the Korea Contents Association
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    • v.13 no.3
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    • pp.162-173
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    • 2013
  • This study was to examine the effect of trust, stigma, optimistic bias on risk perception of nuclear power plants. For this study, we carried out a survey targeting residents, total of 383, living in Seoul. The findings showed that trust of general public on nuclear power plants influenced negatively on stigma. Second, trust of general public on nuclear power plants influenced not significantly on optimistic bias. Third, stigma of general public on nuclear power plants influenced positively on risk perception. Fourth, optimistic bias of general public on nuclear power plants influenced negatively on risk perception.

Bran Structure and Water Uptake Rate of Japonica and Tongil-type Brown Rices (일반계와 통일계 현미의 겨층구조와 수분 흡수 속도)

  • Lee, Soo-Jeung;Kim, Sung-Kon
    • Applied Biological Chemistry
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    • v.37 no.2
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    • pp.94-99
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    • 1994
  • Bran structure and water uptake rate for brown rices of thirteen japonica and twelve Tongil cultivars were investigated. The japonica type was shorter in length and had lower value in the ratio of length to width than Tongil one. No differences were observed in width and weight between the two types. The number of aleurone layer and the thickness of bran layer were higher in dorsal side than in ventral side in all rice cultivars. The structure in ventral side was similar but the number of aleurone layer in dosal side was higher in japonica samples. There were no significant differences in water uptake rates showed no correlation with the bran structure.

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