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A Study on the effect of the Scholastic Aptitude Test on flight aptitude (비행적성에 영향을 미치는 대학수학능력시험에 관한 연구)

  • Noh, Yo-Sup
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.18 no.1
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    • pp.83-88
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    • 2010
  • The study is intended to help to select the pilot candidates with exceptional flight aptitude ability and to investigate the relationship between the results of the scholastic aptitude test and the flight aptitude. It is intended that the research will help to draw recommendations on the relevant fields of the scholastic aptitude test that is to be used to select the high caliber candidates with exceptional flight aptitude ability, to gauge the resulting effectiveness of its application and helping to revise the university's syllabus accordingly. From the study, korean, mathematics, english grade and the flight aptitude test results have all shown to hold mutual relationship and through simple correlation analysis, it was discovered that mathematics and English are the two factors that affect the results of the flight aptitude test, with the extent of its impact graded in descending order of English, mathematics and Korean. Lastly, the logistic regression analysis have discovered that the mathematics grade has significant effect on the classification of the flight aptitude and non aptitude category groups, and English also has significant influence close to the 0.05 p-values. It is believed that should the findings of this study be considered as part of the selection process of the university applicants of the department of aeronautical science, making discovery of candidates of higher quality is expected.

A Study on the Fitting Size of Tween Generation' Garments (트윈세대의 의복 치수적합성에 관한 연구)

  • Lee, Jin-Hee;Jeon, Myong-Sug
    • Journal of the Korean Home Economics Association
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    • v.44 no.10
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    • pp.145-154
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    • 2006
  • The purpose of this study was to examine how the garment sizes by junior brand manufactures reflect Tween Generation's (ages from 5th grade to 9th grade) actual body sizes. They have diverse clothing preferences in styles and fitting levels as well as diverse body sizes and shapes. The subjects of this study were 520 students (the 5th and 6th grades in elementary schools, the 1st, 2nd and 3rd grades in middle schools) who lived in Jeonju. A questionnaire was used in this study. The data were analyzed by frequency, means, t-test and $\chi^2$. The results were as follows. In the selection of garment size, both the girl and boy students most preferred selecting garments after trying them on by themselves. Boy students tended to select garment size according to their mothers' advice. On the other hand, elementary school students showed a tendency to select garment size with their mothers. In fitting sizes, middle school girls wanted the size to fit tightly rather than loosely on their bodies much more than elementary school girls. Junior brand manufacturers produced sizes that well reflected actual body sizes of elementary and middle school girls. Specifically, the pants best covered their body sizes.

Ready-mades Size system and consumer Satisfaction on Women's Jackets -For Women Aged between 20's and 30's- (여성복업쳬의 재킷 치수체계와 소비자 치수 만족도에 관한 연구 - 20대와 30대 여성을 중심으로 -)

  • Lee Hee-Chun;Lee Won-Ja
    • Journal of the Korea Fashion and Costume Design Association
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    • v.7 no.3
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    • pp.27-37
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    • 2005
  • This study is aimed at the ready-mades size system and satisfaction of consumers size for woman's wear at domestic market which are made by public production systems. This study, particularly, is focused on jacket of 20-30 aged woman's wear in twenties & thirties female clothe. The procedures of this study are as follows; 1. Select 25 domestic clothing companies that its product has targeted in twenties & thirties female and investigate the system of each pattern size 2. Select 259 female in twenties & thirties randomly in Seoul survey a standad of females jacket purchase. Analysis of this study is based on SPSS statistics program, technical statistics, $X^2$ and ANOVA verification. The results of studying are as follows; 1. The survey of pattern size of the domestic females clothing companies has shown some distinctive feature at age and body type of their consumers. 2. Crucial point of female consumers in twenties & thirties is a design and fitness of their jacket while they are purchasing their jacket. 3. Female consumers have some dissatisfaction for the variety of size, difficulty of purchasing and size of bust, shoulder & length of arms of their jacket.

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A Study on the Science and Technology Areas for the Third Technology Foresight of Korea (과학기술예측 대상기술 선정을 위한 주요 기술영역의 조사연구)

  • 정근화;고대승;이정근;손석호;변도영
    • Journal of Korea Technology Innovation Society
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    • v.5 no.1
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    • pp.110-126
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    • 2002
  • This study reviews and compares the selection procedures for science and technology topics to predict mid- and long-term trends in science and technology development in Korea, Japan, and the United Kingdom. It then identifies science and technology topics and future technologies for the third science and technology foresight of Korea. In Japan and the United Kingdom, non-technological topics that reflect socioeconomic needs are also select-ed along with technological ones. This study provides the following policy implications to enhance reliability and effectiveness of the third science and technology foresight of Korea. First, selection of science and technology topics should coincide with the national goal, taking into account development trends in science and technology and socioeconomic needs. Second, the current prediction methodologies such as "delphi" do not fully consider future uncertainties in science and technology development. A scenario method is, for example, needed to present coherent pictures of alternative futures. finally, the third technology foresight should select and include topics that reflect domestic conditions and global trend in technological progress. This study suggests 117 topics for the third science and technology foresight.foresight.

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Analysis on Preceding Study of Consumer's Store-Choice Model: Focusing on Commercial Sphere Analysis Theories

  • Quan, Zhi-Xuan;Youn, Myoung-Kil
    • The Journal of Industrial Distribution & Business
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    • v.7 no.4
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    • pp.11-16
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    • 2016
  • Purpose - There are numerous theories for retail trade area analysis which are designed to select candidate locations for new stores. In this study, comparative analysis on the characteristics from those of the theories are shown, and the explanation for the power in consumers' store-choice behaviors and their limitations are examined. Also, plans for improving commercial sphere analysis are explored. Research design, data, and methodology - This study is based on literature reviews with normative research methodology. Among many researches regarding the analysis on the location and commercial sphere for launching a new store, researches relying on statistics are excluded in this study since they belong to the marketing research area,. Results - In the Law of retail gravitation, Huff's model multinomial logit model and etc. are mutual complementary mathematical techniques for analyzing commercial spheres and each of them has its own characteristics. These theories rely on the same hypothesis in which consumers are all believed to be behaving rationally under a similar behavioral system. However, the trial in explaining or estimating behavior of choosing a store with only a select size of the population that is objectively estimated by some major properties has limits in its credibility. Conclusion - Research on consumer's spatial behaviors can be fully illustrative and explainable when it has both quantitative approaches such as 'law of retail gravitation', 'logit model' and etc., and qualitative approaches like consumer's 'cognitive structure', 'learning status', 'image formation', 'attitude' and etc.

A Study of Review Journals for Children's Materials (어린이자료 전문서평지 개발 방안에 관한 연구)

  • Lee, Lan-Ju
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.22 no.4
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    • pp.341-359
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    • 2011
  • The review journal is becoming important to select appropriate resources as the increase of publication of children's materials. The study aims to suggest the focal points and basic frameworks of review journals of children's materials to be used as select tools. The study employs case studies. Four foreign review journals and a Korean library journal are analyzed. The study found nine guidelines for basic framework to develop review journals of children's materials.

The Effect of Changes of Learning Systems on Learning Outcomes in COVID-19 Pandemic Conditions

  • HUTAHAYAN, Benny
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.3
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    • pp.695-704
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    • 2021
  • This study aims to determine the effect of changes in learning systems and its effects on students' learning outcomes amid the Covid-19 pandemic. The sample of this study are the students who are in Jakarta, Indonesia. "Non-probability random sampling" technique has been used to select the samples while the sampling method used is "purposive sampling", where criteria are used to select samples. The samples in this study are 200 people taken randomly using Google Form. Concentration ability and learning interest can affect learning outcomes with the mediation of learning comfort and a good learning environment. As well as physical distancing can moderate the effect of concentration ability and learning interest on learning outcomes. The ability to concentrate on improving learning outcomes requires psychomotor improvement. Whereas interest in learning with indicators of learning awareness can improve learning outcomes. A clean environment is a strength in the learning comfort and the community environment can be recommended in the learning environment. The implementation of the restriction of gathering becomes an important point of physical distancing. The other novelties are the learning comfort and the learning environment as mediating variables and physical distancing as moderating variables in one study at a time.

Optimal Hierarchical Design Methodology for AESA Radar Operating Modes of a Fighter (전투기 AESA 레이더 운용모드의 최적 계층구조 설계 방법론)

  • Heungseob Kim;Sungho Kim;Wooseok Jang;Hyeonju Seol
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.46 no.4
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    • pp.281-293
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    • 2023
  • This study addresses the optimal design methodology for switching between active electronically scanned array (AESA) radar operating modes to easily select the necessary information to reduce pilots' cognitive load and physical workload in situations where diverse and complex information is continuously provided. This study presents a procedure for defining a hidden Markov chain model (HMM) for modeling operating mode changes based on time series data on the operating modes of the AESA radar used by pilots while performing mission scenarios with inherent uncertainty. Furthermore, based on a transition probability matrix (TPM) of the HMM, this study presents a mathematical programming model for proposing the optimal structural design of AESA radar operating modes considering the manipulation method of a hands on throttle-and-stick (HOTAS). Fighter pilots select and activate the menu key for an AESA radar operation mode by manipulating the HOTAS's rotary and toggle controllers. Therefore, this study presents an optimization problem to propose the optimal structural design of the menu keys so that the pilot can easily change the menu keys to suit the operational environment.

A Study of Origin and Destination Decision for a Direct Bus Line in a City with Transit Mobility and Potential Demand (대중교통 이동성과 잠재수요를 이용한 도시 내 지역 간 직결노선버스 기종점 선정에 관한 연구)

  • Chang, Kyung Uk;Kim, Hwang Bae;Park, Hong Sik;Park, Seon Bok
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.31 no.4D
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    • pp.547-553
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    • 2011
  • This study has redefined the concepts of mobility indexes and potential demand, standards to evaluate areas with the worst public transportation system and applied the relevant indexes to select the areas with the worst public transportation mobility and present a method to set direct public transportation lines between these regions. The mobility indexes and indexes to evaluate potential demand were applied to select the regions with the worst public transportation systems in four metropolitan cities and case studies were carried out on direct lines provided between these regions. The analysis results showed that in public transportation mobility blind spots, public transportation takes much longer than driving an automobile or public transportation services are not provided. In addition, the analysis showed that a direct lines system to solve such worst off regions should be built to have public transportation take as much time as driving an automobile by establishing lines for automobiles only, minimize time lost from hopping up and down a bus and maximize connections.

Study on the Development of Quantitative Assessment Computer System to Select Environment Friendly Railway (환경친화적인 철도노선선정은 위한 주요환경인자 정량화 시스템 개발에 관한 연구)

  • Kim, Dong-Ki
    • Journal of the Korean Society for Railway
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    • v.12 no.1
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    • pp.144-150
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    • 2009
  • This study analyzed opinions of specialists checking of industrial environment, analysis of bid guideline to select environment friendly railway corridor and choose weight factors. Thus, 7 major categories were extracted from 20 EIA categories and essential supplement request items for environment friendly railway corridor selection. To select environment friendly railway corridors, many alternatives should be compared and the assessment of each alternative must be carried out on the basis of these 7 categories. To solve this problem, the selected method was AHP which simplifies the complex problems utilizing hierarchy, quantifying qualitative problems through 1:1 comparison, and extracting objective conclusions by maintaining consistency. As a result, a GUI-based program was developed which provides basic values of weighted parameters of each category defined by specialists, and a quantification of detailed assessment guidelines to ensures consistency.