• Title/Summary/Keyword: Study type analysis

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Prediction of Combination-Type-Staggered-Labyrinth Seal Leakage Using CFD (CFD를 사용한 복잡한 형상을 갖는 래버린스 실의 누설량 예측)

  • Ha Tae-Woong
    • Tribology and Lubricants
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    • v.22 no.2
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    • pp.66-72
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    • 2006
  • Leakage reduction through annular type labyrinth seals of steam turbine is necessary for enhancing their efficiency and the precise prediction method of seal leakage is needed. In this study, numerical analysis for leakage prediction of the combination-type-staggered-labyrinth seal has been carried out using FLUENT 6 which is commercial CFD (Computational Fluid Dynamics) code based on FVM (Finite Volume Method) and SIMPLE algorism. The present CFD results are verified with the theoretical analysis based on Bulk-flow concept which has been mainly used in predicting seal leakage. Comparing with the result of Bulk-flow model analysis, the leakage result of CFD analysis shows good agreement within 7.1% error.

Development of an analysis model for the first half cycle non-limiting type Hybrid SFCL (22.9kV 반주기후한류방식 복합형 초전도한류기 해석모델 개발)

  • Lee, Seung-Ryul;Yoon, Jae-Young;Lee, Byong-Jun
    • Progress in Superconductivity and Cryogenics
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    • v.12 no.1
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    • pp.6-11
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    • 2010
  • For real power system application of SFCL, it is necessary to develop an analysis model of the SFCL. In Korea, hybrid SFCL of the first half cycle non-limiting type have been jointly developed by KEPRI and LS Industrial Systems through DAPAS program. In this study, we developed a PSCAD/EMTDC analysis model of the hybrid SFCL of the first half cycle non-limiting type. The simulation results of the developed model are in agreement with the test results of the real SFCL. The developed SFCL model is tested in real power system model.

Content Analysis of the Planning Characteristics of Apartment Houses in Daejeon City (대전지역 공동주택의 분양 팜플렛에 나타난 계획 특성)

  • Park, Jung-A;Kang, In-Ho;Choi, Byung-Sook;Jung, Mi-Hyeon;Jang, Hye-Sun
    • Journal of the Korean housing association
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    • v.19 no.3
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    • pp.11-20
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    • 2008
  • The purpose of this study was to find out tendencies in the planning characteristics focused on the community, single building, shared spaces and interior concept of apartment houses in Daejeon City, and to analyze these characteristics according to apartment unit floor plan based upon the arrangement of room, the type of main entrance, the type of LDK, anbang, kitchen, bathroom and the 3rd space. This study used the content analysis method and analysis was made on drawings and descriptions showing planning characteristics of apartment houses. Above all, 34 cases of apartment houses and 159 unit plans were analyzed. The results of this study were as follows: 1) The most important characteristics of the direction of housing development was the "well-being" concept including greenzone and natural environment. The most mentioned community spaces were children's playgrounds and parks. The emphasized interior concepts were noble, well-being and natural concepts. 2) The most prominent front arrangement type was the 3-bay unit plan, front space arrangement was focused on rooms and, livingroom. The most prominent front space arrangement types were R/L/R, R/L/R/R and there is a new tendency towards KD/L/R/R. 3) The most prominent LDK floor plans were of the LDK type. The type of "Anbang" arrangement consisted mainly of room-bathroom-dressing room. The type of public bathroom arrangement consisted mainly of bathtub-toilet-washbasin and the "Anbang" bathroom arrangement was shower-booth-toilet-washbasin.

Development of Torso Pattern with Princess-line for Each body Type of Middle Aged Women (중년여성의 체형별 프린세스라인 토르소 원형 개발)

  • Jang, Moon-Hee;Yang, Chung-Eun
    • Fashion & Textile Research Journal
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    • v.16 no.2
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    • pp.255-265
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    • 2014
  • This study developed and proposed a pattern that can fit the body and compensate for the defects of the body type by applying shoulder princess line to the torso pattern and including formative characteristics of each object on the study of body shape's change in 40-59 year old middle aged women. The results of this study are as follows; First, according to the analysis of 'Size Korea 2010' such as average, standard deviation, minimum value, and maximum value of 48 items, women showed increase in most of the items except height as they became aged. Second, factor analysis was made to understand the shape component factors of middle aged women and to use them for the body type classification. Third, cluster analysis was made according to the shape of front and sides which should be considered in pattern production based on the factor analysis results, and the body type with the measurement values most similar to the average of direct measurement of 'Size Korea 2010' was set as standard. Fourth, in designing torso patterns through the $1^{st}$ and the $2^{nd}$ wearing experiments according to the body type, body shapes such as Chest Circumference, Waist Circumference, Hip Circumference, and Waist Back Length were considered in pattern design, goodness-of-fit was enhanced with difference in margin according to body type and different margins in front and back, and fitting satisfaction was improved by applying princess line.

Character Analysis Method based on the Value Type of the Human (인간 가치 유형에 기반한 캐릭터 분석 방법론 제안)

  • Song, Minho
    • The Journal of the Korea Contents Association
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    • v.17 no.9
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    • pp.650-660
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    • 2017
  • This study is to suggest a new method of analyzing personality types of characters in narrative. First, we examined the history of the taxonomy of character types that existed in narrative theories so far. Until now, the classification of character types in narrative theory consisted largely of a formal classification based on roles in narrative, a content classification based on human internal qualities, and a complementary classification in which the two classification criteria are united. The problem with the existing character classification type is difficult to categorize it in spite of the usefulness of the content classification based on human internal qualities. On the other hand, the classification based on the role of the character in the narrative does not help as much as a practical analysis methodology because the classification is formal. In this study, we try to solve this problem by introducing Shalom Schwartz's human value type, and to make human character's value type and human role correlated with each other as a new character analysis methodology. Schwartz's study of value type is a very effective method to grasp the motivation of human behavior, and it seems to be very meaningful in analyzing the directivity of characters.

A Study on the Impact of Employee's Awareness about Corporate Social Responsibility on Innovative Behavior ; Targeting Frontline Employees in the Hotel Industry

  • Choi, Hyun-Jung
    • Culinary science and hospitality research
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    • v.22 no.1
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    • pp.78-86
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    • 2016
  • This study is designed to investigate the impact of employee's awareness about corporate social responsibility on innovative behavior among frontline employees in the hotel industry. In addition, the present study seeks to demonstrate whether employees awareness about corporate social responsibility or innovative behavior varies according to gender, age, education level and employment type. In order to achieve the study goal, the data were obtained from frontline employees(Rooms division, F&B division) working in the 5-star hotels. And the data were analyzed by frequency analysis, factor analysis, reliability analysis, t-test, ANOVA and regression analysis were undertaken using SPSS(18.0). The results showed that gender, age and employment type were not significant factors to generate differences on awareness about corporate social responsibility. But the higher educated employee was likely to perceive the awareness about corporate social responsibility better. Employee's innovative behavior varied on all of gender, age, education level and employment type. In other words, employee who is male, in the older age group, in the higher educated level and the full-time position tends to do more innovative behavior. Implications based on the study results are also discussed.

A Basic Study on the Concept and Cases of Healthy Eco Dwelling (친환경 건강주거의 개념과 사례에 대한 기초 연구)

  • Lee, Min-Kyoung;Jung, Jin-Ju;Choi, Hyo-Seung
    • Journal of the Korean Institute of Rural Architecture
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    • v.7 no.3
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    • pp.68-75
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    • 2005
  • 'Health' trend like the latest fashion that spread to present society that elevate a lot of interests in qualitative elevation of life by rapid economic growth did to derive vocabulary called 'well-being' over all field. More and more comprehensive new type word 'LOHAS' appear to this. I wish to present basic data that need in study of healthy eco dwelling through making comparative study of existing study, literature analysis, and application type and planning elements etc of healthy dwelling. This study is preceded in following steps and contents. First, make conceptional definition for similarity words regarding healthy eco dwelling through existing study and internet search data etc, and analysis comprehensive meaning of 'Health' and 'Healthy Dwelling'. Second, I have done arrangement examination synthetically about healthy eco dwelling, wellbeing house, and ubiquitous future dwelling by paradigm of spread healthy dwelling. Third, examine application type of healthy dwelling that appear present and arrange analyzing planning elements is applied in the types.

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A Study on Consumer's Channel Transition Behavior in the Information Search and Purchase Channel (정보탐색과 구매결정에 있어서 채널이동 소비자들에 대한 연구)

  • Chae, Jin Mie
    • Fashion & Textile Research Journal
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    • v.21 no.6
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    • pp.743-753
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    • 2019
  • This study investigates differences in demographic characteristics, shopping orientation, perceived risk, and satisfaction after purchase among consumer types. This study classifies consumer types according to their channel transition behaviors between the online and offline channels with a focus on the steps of information research and buying decision in buying decision-making process. The four consumer groups are as follows: off-off type (offline research-offline purchase), on-on type (online research-online purchase), on-off type (online research-offline purchase) and on/off-off type (online and offline research-offline purchase), off-on type (offline research-online purchase) and on/off-on type (online and offline research-online purchase). Data were collected from adults over 20 years old who had bought clothes within one year. The questionnaire was carried out from July, 2019 using a professional internet research panel; in addition, 500 sets of useful data were analyzed by descriptive statistics, factor analysis, reliability analysis, chi-squared test, ANOVA and Duncan-test using SPSS 21.0. The findings showed significant differences among the classified consumer groups for consumer demographics, shopping orientation, perceived risk, and purchase after satisfaction. The results imply that consumers show a variety of channel transition behaviors based on demographic variables, shopping orientation, and perceived risk. Understanding and adapting to consumer purchase behaviors will allow company distribution channels to be effectively managed and eventually increase consumer satisfaction as well as company sales volume.

Analysis of Bone Mineral Density and Incidence of Osteopenea in Type II Diabetic Patient's (제2형 당뇨환자의 골감소증 발생빈도와 골밀도 분석)

  • Yoon, Se-Won;Sin, Jung-Sub;Lee, Hyun-Kee
    • The Journal of Korean Physical Therapy
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    • v.18 no.4
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    • pp.11-17
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    • 2006
  • Purpose: This study aims to suggest clinical basis of physical therapy to skeletal system complication in type II diabetic patients through a variety of analysis methods. Methods: 75 subjects(type II diabetic patients; age from 40 to 80) of this study were participated in BMD(Bone Mineral Density) and Dual energy X-ray absorptiometry, blood test to their skeletal system. Results: Incidence of osteopenea was higher than normal group as women(91.2%) and men(53.5%) in diabetes group. However, women were showed no significantly difference in comparison group. Above age 60(in diabetes group; men and women) showed to highly incidence of osteopenea as well as significantly difference in osteopenea(peripheral neuropathy). As a result of analyzing blood through presence and absence of osteopenea in diabetes group, men were showed significantly difference in DPD/creatinine ratio and women were showed significantly difference in Alkaline phosphatase, Corrected Calcium. Conclusion: This study shows that decreased BMD and increased osteopenea through type II diabetes. Women were particularly lower BMD and higher incidence of osteopenea than men and men influence of type II diabetes on change of BMD was greater than women.

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A Study on the Evaluation Method of Fatigue Strength of Membrane Type LNG Tank(I) (멤브레인 방식 LNG탱크의 피로강도 평가법에 관한 연구 (I))

  • 김종호
    • Journal of Advanced Marine Engineering and Technology
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    • v.21 no.1
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    • pp.49-58
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    • 1997
  • The membrane type LNG tank is non self-supporting tank which consists of both primary and secondary membrane supported through the insulation boxes by the adjacent hull struc¬ture. Although the membranes are not structural member. They are subject to periodical cyclic loads due to the thermal expansion and other expansions or contraction of membrane. At the design stage of the tank, an analytical and experimental approach on the fatigue strengths of membrane and its welds is necessary in order to assist the designer and the inpector. In this study the evaluation method of fatigue strength of membrane type LNG tank is pre¬sented with FEM analysis and fatigue test of lap welds and it contains the following:1) The fatigue tests and preparation of design S - N curve for lap welds 2) FEM analysis of test specimens 3) Estimation of cumulative damage factor of lap welds 4) Guideline for inspection of lap welds of membrane type LNG tank As the results of analytical and experimental approaches in this study, the evaluation method of fatigue strengths of membrane type LNG tank is proposed, which is expected to be useful for design and inspection of membrane type LNG tank.

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