• Title/Summary/Keyword: mix design analysis

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Creep analysis of CFT columns subjected to eccentric compression loads

  • Han, Bing;Wang, Yuan-Feng;Wang, Qian;Zhang, Dian-Jie
    • Computers and Concrete
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    • v.11 no.4
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    • pp.291-304
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    • 2013
  • By considering the creep characteristics of concrete core under eccentric compression, a creep model of concrete filled steel tubes (CFT) columns under eccentric compressive loads is proposed based on the concrete creep model B3. In this proposed model, a discrete element method is introduced to transform the eccentric loading into axial loading. The validity of the model is verified by comparing the predicting results with the published creep experiments results on CFT specimens under compressive loading, together with the predicting values based on other concrete creep models, such as ACI209, CEB90, GL2000 and elastic continuation and plastic flow theory. By using the proposed model, a parameters study is carried out to analysis the effects of practical design parameters, such as concrete mix (e.g. water to cement ratio, aggregate to cement ratio), steel ratio and eccentricity ratio, on the creep of CFT columns under eccentric compressive loading.

Predictive Equation of Dynamic Modulus for Hot Mix Asphalt with Granite Aggregates (화강암 골재를 이용한 아스팔트 혼합물의 동탄성 계수 예측방정식)

  • Lee, Kwan-Ho;Kim, Hyun-O;Jang, Min-Seok
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.26 no.3D
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    • pp.425-433
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    • 2006
  • The presented work provided a predictive equation for dynamic modulus of hot mix asphalt, which showed higher reliability and more simplicity. Lots of test result by UTM at laboratory has been used to develop the precise predictive equation. Evaluation of dynamic modulus for 13mm and 19mm surface course and 25mm of base course of hot mix asphalt with granite aggregate and two asphalt binders (AP-3 and AP-5) were carried out. Superpave Level 1 Mix Design with gyrator compactor was adopted to determine the optimum asphalt binder content (OAC) and the measured ranges of OAC were between 5.1% and 5.4% for surface HMA, and around 4.2% for base HMA. The dynamic modulus and phase angle were determined by testing on UTM, with 5 different testing temperature (-10, 5, 20, 40, & $55^{\circ}C$) and 5 different loading frequencies (0.05, 0.1, 1, 10, 25 Hz). Using the measured dynamic modulus and phase angle, the input parameters of Sigmoidal function equation to represent the master curve were determined and these will be adopted in FEM analysis for asphalt pavements. The effect of each parameter for equation has been compared. Due to the limitation of laboratory tests, the reliability of predictive equation for dynamic modulus is around 80%.

The Study of Educational Program Development for Self-Marketing based on Job Analysis

  • Ahn, Sang Joon
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.9
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    • pp.135-142
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    • 2019
  • Given the ability and skills required by modern people, marketing can be divided into knowledge-related skill such as marketing plans, market segmentation, and marketing mix management and supportive skill such as communication, inter-organizational management, creativity, and decision making. Knowledge related skills can be nurtured in existing marketing classes, but it is recognized that special educational programs such as self marketing are needed to develop and train supportive skills regardless of education levels or major education. This paper is aimed to design for marketing educational program for the self marketing. In this study, a DACUM method job analysis to extract contents by specialists such as model setting of task and job, job statement, job analysis, education course development, and so on. In the first place, this report presents job analysis model by procedures for developing selection criteria of examination questions of the self marketing qualification. The first step is preparation for job analysis, the second step: the establishment of job models, the third step : the job specification and task analysis, the fourth step: the review of job model, the fifth step: the establishment of subjects for examination matrix table for making questions.

A Kinetic Analysis of the Lower Extremity on the Normal and Abnormal Specificity of Walking on Stair for Twenties (이십대 청년의 정상 및 비정상 계단보행특성에 따른 하지의 운동역학적 분석)

  • Kim, Young-Ji;Lee, Young-Shin;Kim, Chang-Won
    • Korean Journal of Computational Design and Engineering
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    • v.16 no.6
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    • pp.391-396
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    • 2011
  • Gait is walking attitude and indicating state. The body's gait is a good mix in the center of body mechanics and exercises to wake up gently at the same time switch is a pass which is complicated at legs various joints. The shifting action what swing phase and stance phase rhythmic movement of body. One from piece moves with different dot. Especially plain walking and stair walking as a vehicle has been used frequently. Characteristics of the stair walking while the balanced the horizontal and vertical movement. Stair walking often takes place in everyday. It requires large range more than walking at plain in the moment and joint range of gait motion. And consistently applied to joints and various types of loads at legs joint may involve joint disorders. In this study, spastic cerebral palsy existing artificial limbs for disabled people when developing calibration equinus deformity patients induce muscle pain when walking on stairs independently, to reduce the research. Comparing the characteristics of the walking up the stairs for analysis patellofemoral joint pain as a result it is to provide engineering data.

Design and Implementation of a Document-Oriented and Web-Based Nuclear Design Automation System (문서중심 및 웹기반 핵설계 자동화 시스템의 설계 및 구현)

  • Park, Yong-Soo;Kim, Jong-Kyung
    • The KIPS Transactions:PartD
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    • v.11D no.6
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    • pp.1319-1326
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    • 2004
  • To automate nuclear design works which are time-consuming and man-power intensive, Innovative Design Processor ($IDP^{TM}$) is being developed. Two basic principles of IDP are the document-oriented design and the web-based design. The document-oriented design is that, if the designer writes a design document called active document and feeds it to a special program which has a robust parser, the finai document with complete analysis, table and plots is made automatically. The active documents can be written with ordinary HTML/XML editors or created automatically on the web, which is another framework of IDP. Using the proper mix-up of server side and client side programming under the LAMP (Linux/Apache/MySQL/PHP) environment, the design process on the web is modeled as a design wizard style so that even a novice designer makes the design document easily.

The 'Slow' Fashion Characteristics Expressed on 『Vogue』 Magazine Since 2000 (2000년 이후 『보그』지에 나타난 '느림'의 패션 경향)

  • Ham, Youn-Ja;Park, Ju-Hee
    • Fashion & Textile Research Journal
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    • v.12 no.6
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    • pp.715-722
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    • 2010
  • The purpose of this study is to consider the characteristics of 'slow' fashion style expressed on fashion magazine in pursuit of sociocultural paradigm change towards 'slowness'. As for the research methodology, content analysis for Vogue magazine has been undertaken. The results of this study can be summarized as followings. First, the concern toward eco-friendly ethics has been involving simple style which is long-lasting, junky style which is reused or recycled, and sustainable style which is motived by nature. Second, the interest toward local diversity has been involving ethnic exotic style which is inspired by global culture and vintage retro style which is applied the old tradition. Third, the attention toward self-made has been involving personal style which is produced through the process such as made-to-measure, made-to-order and reform. Also, anonymous dresses can be personalized easily under mix-n-match. In Conclusion, the 'slow' fashion characteristics has been expressed on contemporary mass fashion in various way and the 'slow' fashion would be expected to improve in accordance with the change toward sociocultural paradigm of 'slowness'.

A Comparison on the Satisfaction and the Characteristic of Fashion Shopping Behavior of the Shoppers Visited in Special Tourist Zone, Dongdaemun and Myeongdong Fashion Town (패션관광특구 방문객의 패션 쇼핑 특성 및 만족도 비교 - 동대문과 명동 패션타운을 중심으로 -)

  • Yu, Jihun
    • Journal of the Korea Fashion and Costume Design Association
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    • v.16 no.3
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    • pp.117-133
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    • 2014
  • The purpose of this study was to compare with shopping behavior and satisfaction of who have visited Dongdaemun and Myeongdong and to provide the fundamental data for differentiation strategy of two fashion trading area. The survey was carried out targeting shoppers who were in Dongdaemun and Myeoongdong and then a total of 778 questionnaires were used for the data analysis; frequency, t-test, chi-squre independence test using SPSS. 20. The results of this study were as follows. Main shoppers in Dongdaemun were the teenagers and twenties, and in Myeongdong were twenties and thirtys. The shoppers who have visited Dongdaemun significantly considered 'store factor' such as store size and comfortability, store interior, store location and accessibility, and 'product factor' including material and quality, design, formfitting, and various sizes, while Myeongdong visitors thought 'promotion factor'such as business hours, one stop shopping, sale and event etc. as important factor. The degree of satisfaction for marketing mix of Myeongdong trade area was higher than Dongdaemun's one. The case of impulse buying in two trade area was not high, while intention to revisit Dongdaemun and Myenongdong was all higher than average. Consumers were more intended to recommend Myeongdong over Dongdaemun to others.

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Experimental analysis and modeling of steel fiber reinforced SCC using central composite design

  • Kandasamy, S.;Akila, P.
    • Computers and Concrete
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    • v.15 no.2
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    • pp.215-229
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    • 2015
  • The emerging technology of self compacting concrete, fiber reinforcement together reduces vibration and substitute conventional reinforcement which help in improving the economic efficiency of the construction. The objective of this work is to find the regression model to determine the response surface of mix proportioning Steel Fiber Reinforced Self Compacting Concrete (SFSCC) using statistical investigation. A total of 30 mixtures were designed and analyzed based on Design of Experiment (DOE). The fresh properties of SCC and mechanical properties of concrete were studied using Response Surface Methodology (RSM). The results were analyzed by limited proportion of fly ash, fiber, volume combination ratio of two steel fibers with aspect ratio of 50/35: 60/30 and super plasticizer (SP) dosage. The center composite designs (CCD) have selected to produce the response in quadratic equation. The model responses included in the primary stage were flowing ability, filling ability, passing ability and segregation index whereas in harden stage of concrete, compressive strength, split tensile strength and flexural strength at 28 days were tested. In this paper, the regression model and the response surface plots have been discussed, and optimal results were found for all the responses.

Validity of the Conceptual Structure of Clothing Shopping Orientation -Focused on the Specific Structure by the Gender- (의복 쇼핑 성향의 개념적 구조 모형에 대한 타당성 확인 연구 -성별에 따른 세부 구조 차이를 중심으로-)

  • Kim Saehee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.29 no.3_4 s.141
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    • pp.535-546
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    • 2005
  • The purposes of this study are to verify the validity of the conceptual structure of clothing shopping orientation(CSO) developed in the previous research, and to explore the difference of CSO structure between male and female consumer groups. For those purposes, data of 499 male and female consumers were collected. Confirmatory factor analysis, ANOVA, and simultaneous factor analysis were used for data analysis. The results are as follows. First, as a result of confirmatory factor analysis, the validity of conceptual structure of CSO was verified. Second, as a result of ANOVA, male and female showed significantly different CSO at the lower-dimensions level, and as a result of simultaneous factor analysis, male and female showed significantly different relationships between dimensions within the structure. This means that the CSOs of both male and female can be explained by the same CSO structure model, but the specific relationships between CSO dimensions are different by the gender of consumers. Finally, directions for fashion marketing mix concerning the CSO structures of male and female were suggested.

Effect of Entrepreneurial Passion and Positive Emotions on Customer Responses: Mixed Methods Approach

  • HAN, Youngwee;HAN, Sangho
    • Journal of Distribution Science
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    • v.18 no.5
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    • pp.35-47
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    • 2020
  • Purpose: In the highly competitive franchise market, the perceived entrepreneurial passion and emotions of customers are very important, because it impacts on the success of companies. Thus, the purpose of this paper is to suggest how the impact of the franchise entrepreneurial passion and positive emotions on the brand trust and loyalty of customers. Research design, data and methodology: This study analyzes data was collected through questionnaires on customer(n=480) who had visited franchise restaurants. Analysis of used collected data was based on the mix method using quantitative and qualitative comparative analysis. Results: The quantitative analysis results showed inventing passion, developing passion, positive emotions that perceived by customers have a positive impact on brand trust. On the other hand, founding passion did not have an impact on loyalty in quantitative analysis. but when combined with developing passion in qualitative comparison analysis, but when combined with developing passion in qualitative comparison, that became the sufficient condition of high loyalty of customers. Conclusions: The franchisor of the Korean franchise industry is indiscriminately overusing the founding franchisees, causing social problems. In this situation, founding passion can have a negative impact on customers. Therefore, the franchisors must have management capabilities by strictly managing the founding rules of the franchisee and disclosing the corporate vision.