• Korean Journal of Child Studies
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• v.25 no.2
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• pp.109-120
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• 2004

This study examined the effects of Internet addiction on interpersonal relationships. The subjects were selected from 337 secondary school male students and data were collected with questionnaires. Data were analyzed with paired t-test and t-test. Result showed that there is a difference between on-line and off-line interpersonal relationships by Internet addiction. That is, internet addicted adolescents have more positive interpersonal relationships in on-line situations, while normal adolescents do not show any significant difference between on-line and off-line situations.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2008.04c
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• pp.111-114
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• 2008

The paper considers the relation between on-line monitoring and diagnostics on the one hand and high-voltage (HV) withstand and partial discharge (PD) on-site testing on the other. HV testing supplies the basic data (fingerprints) for diagnostics. In case of warnings by on-line diagnostic systems, off-line withstand and PD testing delivers the best possible information about defects and enables the classification of the risk. Because alternating voltage (AC) is the most important test voltage, the AC generation on site is considered. Frequency tuned resonant (ACRF) test systems are best adapted to on-site conditions. They can be simply combined with PD measuring equipment. The available ACRF test systems and their application to electric power equipment -from cable systems to power transformers - is described.

• Journal of the Korea Computer Industry Society
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• v.3 no.9
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• pp.1245-1250
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• 2002

This paper is an intelligence type of remote medical examination system for both on-line and off-line mode to transcend time and space on web where anyone can participate ;on-line consultation among patient, doctor, Korean medical doctor, medical examination in off-line mode, transmission of prescription to the pharmacist designated by patient and preparation of medicine, and semi-eternal storage of medical examination data by storage and check of medical examination data ; and database is composed by using intelligence type of object control which enables effect of treatment for heredity including check and mutual holding of medical examination data among family, fast treatment effect pursuant to situation of past medical examination through control of private disease history, cooperated medical examination among doctors, and so on.

• Journal of The Korean Association of Information Education
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• v.17 no.4
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• pp.507-513
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• 2013

The purpose of this paper is to compare the learning effectiveness of autonomous learning between on-line cyber learning using Internet media and off-line learning using printed media. In this study, each group is provided with the same learning contents and the same learning conditions. For autonomous learning the results revealed a significant difference between on-line cyber learning being not as effective as off-line learning. In order to improve the effectiveness of on-line cyber learning the negative aspects have been identified. These findings will help to improve the development of on-line learning effectiveness.

• Journal of Families and Better Life
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• v.27 no.1
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• pp.31-44
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• 2009

The purpose of this study was to understand how consumers perceive the costs of using certain types of sales-promotions and to suggest ways in which sales-promotions should be developed to contribute to the consumers' welfare and the development of Marketing Strategy. The sufficiency of the consumers' desire was essential to new and creative sales-promotion strategy. This study investigated the perceived costs of using timely opportunity costs, extra expenses, substitution costs, uncomfortable feeling, regrets and economical and psychological satisfactions on certain types of sales-promotions such as off line, coupon, packed items, collection and on line, and event. In the study results on the perceived costs of using certain types of sales-promotions, off line sales-promotions were perceived more than substitution costs, extra expenses, regrets and on line sales-promotions were perceived more than timely opportunity costs. These results were caused by immediately using off line sales-promotions and becoming a member of on line sales-promotions. In the research result on the perceived costs of using certain types of sales-promotions and economical satisfactions, off line sales-promotions exhibited positive relations with substitution costs of coupon and extra expenses, regrets of packed items and collection about economical satisfactions. On line sales-promotions exhibited positive relations with extra expenses and regrets about economical satisfactions. The research results on the perceived costs of using certain types of sales-promotions and psychological satisfactions, off line sales-promotions exhibited positive relations with timely opportunity costs of coupon and collection about psychological satisfactions. On line sales-promotions exhibited positive relations with substitution costs about psychological satisfactions. These results were caused by the feeling of leisure time as the consumer played games or hobbies. This study proposes an approach in the context of sales-promotion with some suggestions and thoughts.

• Journal of Korean Society for Quality Management
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• v.42 no.3
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• pp.445-458
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• 2014

Purpose: Present study was designed to examine the casual relationships among web service quality, customer satisfaction, initial trust and off-line visit intention in hospital website. Research object was limited to web service quality of general hospital. We applied path analysis model in order to test the hypotheses and research model. Methods: Survey tool, that is, Questionnaire had obtained validity through literature survey, exploratory survey and pretest and sample 320 was selected. For statistical treatment of pretest and main analysis, SPSS18.0 and AMOS18.0 were employed and Structural equation model was employed as analysis method. Results: Result of this study shows as follows. Factors of web service quality have an effect on customer satisfaction and initial trust, both of customer satisfaction and initial trust have an effect on off-line visit intention. Also customer satisfaction affects initial trust. Especially, customer satisfaction and initial trust were empirically confirmed as the important factors preceding off-line vis it intention. Conclusion: Therefore, present study shows that customer satisfaction and initial trust are important factors that medium and small size hospitals have to emphasize to raise performance. However, present study has some limitations to additionally research in the future.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.25 no.8
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• pp.539-545
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• 2015

Intense acoustic load is generated when a launch vehicle lifts off, causing the damaging vibrations at the launch vehicle or satellite within the fairing. This paper is concerned with the prediction of lift-off acoustic loads for a launch vehicle. As a test example, the lift-off acoustic load on the Korean launch vehicle, NARO, is predicted by the existing calculation tool, the modified Eldred's second method. Although the acoustic sources, assumed as point sources, are to be located along the center line of the exhaust plume when using the Eldred's prediction method, the exact location of the deflected center line of exhaust gas flow is not usually known. To search for the most appropriate source positions, six models of source line distribution are suggested and the acoustic load prediction results from these models are compared with the actual measurements. It is found that the predicted sound pressure spectrum of the Naro is the most similar to the measured data when the centerline of the turbulent kinetic energy contour is used as the source line.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1998.03a
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• pp.227-232
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• 1998

We developed a Off-Line Graphic Simulator which can simulate a robot model in 3D graphics space in Windows 95 version. 4 axes SCARA robot was adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed program. The interface between users and the off-line program system in the Windows 95's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc. were utilized for 3D graphics.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1998.03a
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• pp.65-70
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• 1998

In this paper, we developed a Windows 95 version off-line programming system which can simulate a track vehicle model in 30 graphics space. The track vehicle was adopted as an objective model. The interface between users and the off-line program system in the Windows 95's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc were utilized for 3D Graphics.

• 제어로봇시스템학회:학술대회논문집
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• 1990.10a
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• pp.41-46
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• 1990

In the existing robot programming methods, off-line method becames important role of programming because of improvement of hardware and software of PC. The purpose of this study is to develop practical robot programming system for polishing task using PC. In the first place, we have investigated the existing robot programming systems, and derived the requirement of this programming system from the existing systems. And we have decided the structure of this system. After that, we have developed this system. Using Windows software, this programming system has man/machine interface function. So users can use easily and quickly.