• Journal of the Korean Society of Marine Environment & Safety
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• v.4 no.2
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• pp.43-52
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• 1998

Generally, the navigational safety of a ship under various loading conditions is evaluated by a loading manual. However, the loading manual handles only statical factors such as weight and buoyancy of ship without including any wave conditions. Practically ship's safety is much concerned with the occurrences on the rough sea as propeller racing, rolling, deck wetness, vertical acceleration, lateral acceleration, slamming and so on. The purpose of this paper is to present a synthetic and practical evaluation method of navigational safety using the integrated seakeeping performance index(ISPI) under loading conditions of ship in seaways. The method is calculated by means of the ISPI by measuring only vertical acceleration. Judgement of dangerousness is carried out for four lading conditions : homogeneous full loaded, half loaded, heavy ballast loaded, and normal ballast loaded conditions. In developing the practical evaluation system of navigational safety, it is useful to solve the difficulties in measuring factors by sensors. And by applying the evaluation diagrames, navigators are able to avoid dangerousness by keeping away of the danger encountering angle of wave direction which the diagram shows.

• Korean Journal of Child Studies
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• v.23 no.3
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• pp.109-121
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• 2002

The subjects of this validation of the Antisocial Behavior Scale(ABS) consisted of 323 normal and 29 clinically referred preschoolers between the ages of four and six years. The ABS has 3 factors: oppositional/aggression, nonsocial/egoism, and inattention. Results showed high test-retest reliability(r=.83-.90). The scale discriminated between the normal and clinical groups. The first(oppositional/aggression) and the third(inattention) factors of the ABS, measuring externalizing behaviors, correlated highly with the Externalizing Problems and Attention Problems Scales of the Korean Version of Child Behavior Checklist(K-CBCL). The second(nonsocial/egoism) factor of the ABS, measuring emotional areas correlated highly with the Emotional Liability Scale of the K-CBCL.

• The International Journal of Costume Culture
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• v.5 no.3
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• pp.204-212
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• 2002

The purpose of this study is to find out relationships among Gender Body Ideology, and clothing preferences. Subjects consisted of 75 female elementary school students, 64 female high school students, and their mothers(139) who are currently residing in Daejeon, Korea. The research was a ex-post facto relational study and the instruments for the study were GBI, genderlogy and 24 clothing stimuli for measuring clothing preferences. The reliability and validity of the measuring instruments were verified by results of judge group analysis and pre-tests. The factor analysis of GBI emerged 4 major factors in Being dimension, and 4 major factors in Doing dimension. Medium low correlations existed between the two GBI dimensions, and genderlogy was correlated specially with the Being dimension. Two GBI dimensions and genderlogy effected on preferences and Possessions of some selected design elements, however, GBI showed higher Predicting power for clothing preference.

• 유체기계공업학회:학술대회논문집
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• 2003.12a
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• pp.154-160
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• 2003

Multi-path ultrasonic flowrate measuring technology is being received much attentions from a variety of industrial fields to exactly measure the flowmeter. Multi-path ultrasonic flowmeter has much advantage since it has no moving parts and not occurred pressure loss. It offers good accuracy, repeatability, linearity and Tum-down ratio can measure over 1:50. The present study investigates flowrate integration errors using weighting factors. A theoretical flow model uses power law to describe a fully developed velocity profiles and wall roughness changes. The methods of weighting factor simulate three configurations of measuring location of gaussian, chebyshev and tailor method. The obtained results show that many chord arrangements are not affected for wall roughness changes and can measure accurate flowrate.

• International Journal of Railway
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• v.2 no.4
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• pp.187-192
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• 2009

Running test of the Korean High-Speed Train using remote controlled measuring system have been executed on the high speed track in order to evaluate and verify the performance of the train. In this paper, influencing factors on the contact force which represents dynamic characteristics between the pantograph and contact wire are analyzed, according to the track condition, span type and running condition. By the analytical study on the test data, we figured out that contact force and dynamic characteristics of the pantograph are mainly affected by running behavior of the train and the span distance which the train passes.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.1065-1068
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• 2008

Concrete is still one most common construction materials even in railway structures. As structures become massive and mega-sized, the importance of early age concrete quality control becomes more significant. Among various factors, relative humidity and temperature are the primary factors governing the early age quality. Temperature raise due to cement hydration causes stress, which can develop to cracking with internal and/or external restraints. Exposure conditions including ambient temperature, humidity and wind also significantly affect the cracking behavior of early age concrete. Among many of studies on the early age concrete behavior, investigation on the variation of temperature and relative humidity internal of concrete is not common. That is in part because the difficulties in measuring the relative humidity and temperature inside the concrete. This study used a digital sensor with an appropriate logger to measure internal temperature and relative humidity. This direct measuring method is expected to provide more reliable and comprehensive data acquisition on the early age behavior of concrete.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.2
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• pp.209-234
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• 2008

According to increasing the benefits from public libraries, there are many studies for measuring the library value. This study presents a methodology for measuring use value of the public library in terms of time value, surplus value of alternative service, value of library service, and overall value of library. The cost-benefit ratio of the time value compared to library's annual budget is 11:1, and the cost-benefit ratio of the overall library value was measured by user's WTP is 0.3:1. This study proposed the method for measuring use value of the public library according to the process, the results of these measurments for each value and the factors affecting the values.

• Korean journal of food and cookery science
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• v.20 no.2
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• pp.187-195
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• 2004

The aim of this study was to test the different situational characteristics of family restaurant choice. Accordingly, this study measured the important factors influencing family restaurant choice between university student's situational characteristics. In this study, the important factors were food presentation-related, facility-related, food quality ＆ value-related and service-related factors. The findings from this study were as follows. Results of analyzing the validity and the internal consistency of important factors showed that the convergent and discriminant validitys of important factors are supported, and cronbach's alpha showed that the internal consistency of important factors is supported. It was found that groups of different situational characteristics perceived that facility factor was significantly important factor influencing their family restaurant choice. It was found that the important factor was statistically significant with regard to the difference situational characteristics. Finally, the results of the study provide seine insights into the market-oriented types of foodservice marketing strategies or tactics to enable family restaurant to effectively manage and more competitive.

• The Journal of Information Systems
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• v.20 no.3
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• pp.161-186
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• 2011

To date, SCM research has mainly focused on the effects of controlled variables on SCM success and emphasized adoption strategies and critical success factors. Consequently, the effects of more uncontrolled variables such as partnership between SCM partners have been largely ignored. The purpose of this study, therefore, is to examine the effects of both controlled variables and uncontrolled variables on SCM performance through affecting RTE characteristics. The six factors examined in this study include Quality of information, partnership quality, Forecasting, Agility, Visibility, and SCM performance. In this study, SCM Performance was divided into three categories: Quality Performance, Cost Performance, Delivery Performance. All factors were examined from the perspective of part suppliers. The results of this study can be summarized as follows. First, SCM information quality positively affected SCM partnership quality, Forecasting, Agility, Visibility. Second, SCM partnership quality positively affected Forecasting, Agility. But, SCM partnership quality showed no significant effect on Visibility. Third, Forecasting had a significant impact on SCM performance. According to the detailed result of measuring SCM performance with Quality Performance, Cost Performance, Delivery Performance, although Forecasting affects Cost Performance, Delivery Performance directly, it does not affect Quality Performance directly. Fourth, Agility also had a significant impact on SCM performance. According to the detailed result of measuring SCM performance, Agility has significant impact on Quality Performance, Cost Performance, Delivery Performance. Fifth, Visibility, as expected, had a significant impact on SCM performance. According to the detailed result of measuring SCM performance, Visibility has significant impact on Quality Performance, Cost Performance, Delivery Performance.

• Journal of the Korea Society of Computer and Information
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• v.24 no.12
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• pp.191-199
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• 2019

In this paper, we propose to develop a diagnosis tool for measuring digital competence for university student. To this end, 223 students participated for the survey research. Based on the survey by 6 domain and 40 questions, 6 factors and 18 questions for digital competence measurement were drawn throughout the factors analysis. The results of the confirmatory factor analysis showed the fact that 6 factors and 18 questions that satisfied the model-fit indexes statistically were finally confirmed. And the developed tool demonstrated good results in reliability and validity verification, which were suitable for measuring digital competence for university students. The developed measurement tool of digital competence for university students consisted of 6 sub-components such digital device operation, communication and collaboration, information searching, processing, and management, problem solving and learning, security, digital ethics. The digital competence measuring tool developed in this study is expected to be used to identify the current level of competences for university student, and to enhance their own digital competences through educational supports.