• Journal of Digital Convergence
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• v.18 no.5
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• pp.205-220
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• 2020

This study investigated whether there was a difference in off-line consumption behavior on and off-line. Online surveys were conducted on 218 people aged 20 to 59 who live in the country actively using Instagram, and the results of analysis through technical statistical analysis, logistic regression analysis, and linear regression analysis are as follows. There are some differences in the consumption items and expenditures of showing consumption behavior on Instagram and showing consumption in real space. In addition, there were different factors influencing the behavior of showing off in Instagram and the factors affecting the showing of consumption in real space. Age, education, and narcissism have an effect on show off behavior in Instagram, whereas age, materialism, and narcissism have been identified as factors influencing in real space. Whether on Instagram or in the real space, the positive emotions felt by consumers after showing off consumption had a statistically significant effect on consumer happiness. This study has significance in that it has empirically verified the difference between Instagram and actual consumption behaviors, and sought the direction of healthy consumption behaviors for consumer happiness.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1992.10a
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• pp.8-13
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• 1992

최근 우리 나라도 자동차의 수요가 급격히 늘어나고 있고, 생산량도 급증하 고 있어 자동차 공업이 산업의 최고의 위치를 확보하게 되었다. 자동차는 최 신 종합 기계 구조물로서 전기, 전자, 제어에 이르기까지 거의 모든 분양의 학문적 이론과 기술을 도입하는 최첨단의 기계 장비인것이다. 따라서 그 부 가가치 또한 매우 큰 것이다. 자동차의 성능을 결정짓는 가장 커다란 요소는 주행 성능과 안정성 및 조종성이다. 주행성능이라 함은 자동차의 종방향 운 동에 관한 성능으로서 기관의 동력에 지배적인 영향을 받는 성능(동력 성능) 과 그 밖의 성능(타향 성능, 제동 성능)으로 구분된다. 또 안정성과 조종성이 라함은 자동차의 횡방향 운동에 관한 성능으로서 로울링과 요우잉을 포함시 킨 곡선 운동에 관한 성능을 일컫는다. 이러한 운동 성능을 좌우하는 것은 구조적인 설계의 양부와 스프링이나 댐퍼의 성능일 것이다. 자동차의 수많은 부품 중의 다수가 국산화 되어 있지 아니하고, 또한 이러한 부품들의 성능을 시험할 수 있는 장비의 수입 의존도가 높은 것은 업계나 학계 등에서 앞으 로 많은 연구가 이루어져야 할 점이다. 자동차의 충격 흡수기(shock absorber)의 검사기도 또한 수입 시험기에 의존하고 있었던 것이 현실이었 다. 이에 본 연구진은 이 검사기의 국산화에 착수 한 것이다. 자동차에 있어 서 충격 흡수기는 지면에서 오는 충격을 급속히 흡수하는 역할을 하여 자동 차의 주행 성능과 안정성을 높혀 주며, 승차감을 높혀 주는 중요한 부품이 다. 따라서 충격 흡수기의 양부의 판정은 대단히 중요한 것이다. 본 연구에 서는 충격 흡수기의 충격 흡수력(감쇠력)을 측정하여 감쇠 특성을 정도 높게 파악할 수 있는 시험기를 만드는데 그 목적을 두고 있다. 연구는 시험기의 구동부를 제작하는 기계부와, 제어 및 계측의 하드웨어를 담당하는 전기.전 자부및 실제로 기계를 구동, 제어하고 측정 결과를 기록하고 출력하는 부분 을 담당하는 소프트웨어 개발부로 나누어서 진행하였다.

• Journal of Korean Society of Steel Construction
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• v.28 no.4
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• pp.263-270
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• 2016

Corrosion resistance steel has been widely used for port and offshore structures exposed to harsh coastal and oceanic environments, due to lower corrosion rate. New higher strength corrosion resistance steel tubes named STKM500 in KS D 3300 were recently developed by domestic technology and expected to replace foreign ASTM A690 steel. In this study, tensile test results are included to show higher yield and tensile strength of STKM500. Then, buckling test results obtained from 2m, 6m, and 12m steel tubes are demonstrated, based on which an allowable axial compressive stress curve for STKM500 steel tubes is suggested.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.5
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• pp.27-33
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• 2014

As UCI (Universal Content Identifier) identification system becomes a national standard for content distribution, many digital contents are distributed through UCI identification system. However, problems associated with copyright infringement and copyright contracts occur due to lack of copyright information. ICN (Integrated Copyright Number), a code system developed for copyright management, includes copyright-related information for the purposes of usage settlement and accounting, illegal usage monitoring, and content filtering. ICN, however, has no information about distribution and content properties. Therefore, the linkage and integration between UCI and ICN can be a basis for the transparent and effective distribution of digital contents. In this paper, we propose a model for linking and integrating UCI and ICN, developing the efficiency in the value chain of each identified system by analyzing political factors and key technical elements between the two identification systems.

• Journal of the Korea Convergence Society
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• v.9 no.9
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• pp.53-60
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• 2018

In order to manage energy efficiency by analyzing the amount of energy, it would determine the nature of the factors involved in the energy utilization. Therefore, accurate measurement of the energy consumption data is an important factor in the energy management. In this study, we are aware of the importance of the data measurement, and proposes the accuracy assessment of electric energy monitoring system. According to conventional statistical methods it is proceeded as follows; i)the measurement error value would be determined by a random variable, ii) setting the confidence interval to consider the distribution of the statistic and determines the confidence level of the measurement accuracy. And using the t-distribution CDF is used to facilitate even small sample data.

• Journal of the Korean Institute of Telematics and Electronics
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• v.26 no.2
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• pp.76-86
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• 1989

Many intelligent robots that are equipped with special tools and sensors re currently used in assembly line. As automatic manufacturing systems including such robots become advanced and complicated, there are increasing needs for the development of the sophisticated programming systems which can control several robots and other manufacutring equipments in workcell at a time. In this paper a programming language, ARL (Assembly Robot Language), is proposed and developed, which can control the manufacturing devices as well as robots in workcell. It has not only all the common features of modern textual robot language but also debugging facilities. In this language system machine dependecy is minimized by using dedicated processes and a shared memory for communication between processes. Extensibility and adaptability of the programming system is increased by using such a technique against the changes of workcel environment.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.175-178
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• 2006

1990 년대부터 본격적으로 시작된 국내 휴대폰의 역사는 불과 10 년 사이에 전체 인구 중 3600 만명 이상의 가입자가 휴대폰을 사용하고 있는 모바일 강국으로 발전하였다. 국내 이동통신사들의 다양한 서비스 전략과 단말 제조사들의 다양한 기술의 발전으로 휴대폰은 단순한 전화기능만을 담당하는 커뮤니케이션 디바이스(Communication Device)에서 다양한 VOD, AOD 서비스들의 도입으로 엔터테인먼트 디바이스(Entertainment Device)로 발전했고, DMB, TV, MP3, 카메라 등 다양한 디바이스들이 결합된 컨버전스 기능성 기기(Functional Device)로 발전해 가고 있다. 이런 과정에서 사용자들은 휴대폰에서 다양한 경험을 하게 된다. 본 연구는 다양한 매체와 디바이스가 결합 된 모바일 환경 속에서 이동통신사와 제조사의 관점에서 분석한 자료를 바탕으로 하나의 통합된 경험을 사용자들에게 제공할 수 있는 방법을 고찰해 보고자 한다. 휴대폰을 만드는 제조업체가 수행하는 경험 디자인은 이동통신사에 상관없이, 자사의 경험 통일성(identity)을 강조하게 되고, 이동통신사는 제조업체와 상관없이 자사의 경험 통일성을 강조하게 된다. 통일성 뿐만 아니라 기능이나 직무(task)의 중요성도 다르기 때문에 경험 디자인을 위한 우선순위도 다르게 된다. 이것의 결과는 모두 사용자가 떠 앉게 된다. 즉 사용자의 경험이 복잡해지게 되고 이것은 장기적으로 제조업체 및 이동통신사 모두에게 불이익을 주게 된다. 본 논문에서는 제조사와 이통사를 위한 사용자 경험 모형을 세웠고, 각 요소별로 접근 방법의 차이에 대해 논의를 하였다. 사용자가 휴대폰 경험에서 혼돈을 적게 하기 위해서는 제조사와 이통사의 인터랙션은 서로 일관성이 있어야 하고, 스타일 부문에서는 서로간의 입장차이가 좁히기 쉽지 않으므로 둘 다 사용자의 선택의 폭을 넓혀주는 방향으로 진행을 한다. 기획단계에서 부터 협력을 함으로써 양사의 갭을 줄일 수 있다.

• Journal of Korean Home Economics Education Association
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• v.17 no.4 s.38
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• pp.87-100
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• 2005

The Purpose of this study is to understand on the whole trend in the home economics instructions among the middle school. The study has been achieved through observing the actual classroom activities, and stating the results as objective as possible. In as much as clarifying the objectives of observing the classroom activities, it would be deemed effective to understand the overall outline of the home economics instructions, as well as to define the elements that make up the classroom work. Hence, the classroom work has been modularized in stage, namely. planning/organization, execution, and evaluation, as well as extracting nine(9) elements of the classroom work. Video-taped classroom activities, which have been used for this research analysis, consists of twelve(12) study classes, covering the subjects in food/nutrition, clothing, household management, daily life as a consumer, and housing management. The items in the study the items of checklist have been broken down further in an effort to develop a framework for analyzing the results of observing the classroom activities. Also included, in part, is the verbatim transcription of the videotaped classroom activities in progress.

• Aerospace Engineering and Technology
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• v.8 no.2
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• pp.61-67
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• 2009

This paper proposes an on-board orbit data generation algorithm for geostationary satellites. The concept of the proposed algorithm is as follows. From the ground, the position and velocity deviations with respect to the assumed reference orbit are computed for 48 hours of time duration in 30 minutes interval, and the generated data are up-loaded to the satellite to be stored. From the table, three nearest data sets are selected to compute position and velocity deviation for asked epoch time by applying $2^{nd}$ order polynomial interpolation. The computed position and velocity deviation data are added to reference orbit to recover absolute orbit information. Here, the reference orbit is selected to be ideal geostationary orbit with a zero inclination and zero eccentricity. Thanks to very low computational burden, this algorithm allows us to generate orbit data at 1Hz or even higher. In order to support 48 hours autonomy, maximum 3K byte memory is required as orbit data storage. It is estimated that this additional memory requirement is acceptable for geostationary satellite application.

• Journal of Radiation Protection and Research
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• v.35 no.3
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• pp.124-134
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• 2010

The Geant4 simulation toolkit provides improved or renewed physics model according to the version. The latest Geant4.9.3 which has been recoded by developers applies inserted Livermore data and renewed physics model to the low energy electromagnetic physics model. And also, Geant4.9.3 improved the physics factors by modified code. In this study, the stopping power and CSDA(Continuously Slowing Down Approximation) range data of electron or particles were acquired in various material and then, these data were compared with NIST(National Institute of Standards and Technology) data. Through comparison between data of Geant4 simulation and NIST, the improvement of physics model on low energy electromagnetic of Geant4.9.3 was evaluated by comparing the Geant4.9.2.