• 한국실천공학교육학회논문지
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• 제3권2호
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• pp.83-92
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• 2011

기계진동학 문제의 해석을 위한 전산프로그램이 비주얼 C++을 이용하여 개발되었다. 이 프로그램은 일반적인 기계진동학 교재에서 다루는 내용에 맞추어 구성되어 있다. 이 프로그램은 매뉴방식을 택하고 있으며, GUI(graphical user interfaces)방식을 도입하고 있다. 문제에 대한 해는 그래픽과 수치 데이터로 표현된다. 예제를 통해 프로그램의 효율성과 응용 가능성을 보여준다. 이 프로그램은 기계시스템의 진동거동을 해석하는데 활용될 수 있다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.692-696
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• 2001

Thermo-mechanical behavior and mechanical properties of intelligent polymer matrix composite with SMA fiber are experimentally studied. It is found that increments of compressive thermal strain is observed as the pre-strain and TiNi volume fraction increase. The smartness of the SMA is given due to the shape memory effect of the TiNi fiber which generates compressive residual stress in the matrix material when heated after being prestrained. In the paper, alloy is based on the general purpose commercial code ANSYS. And for the purpose of easy and fast user's analysis, it is developed the Graphical User Interface by using Tcl/Tk language.

• 한국빅데이터학회지
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• 제2권2호
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• pp.105-114
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• 2017

오늘날 많은 서비스 지원이 웹 사이트를 통해 제공되고 있다. 웹 사이트의 이용 및 효율성을 최적화하기 위하여 방문자들의 이용 패턴 분석이 매우 중요하다. 본 연구에서는 BPI Challenge 2016에서 제공하는 웹 사이트 접속 로그를 분석하여 이용 패턴 분석 및 이용자 그룹별 비교 분석 연구를 수행하였다. 이 데이터는 네덜란드 고용보험사(UWV)의 IT 시스템의 웹 사이트 접속 로그를 제공하며, 고객의 인적 정보, 해당 기관의 웹 사이트를 사용할 때의 고객 행동을 설명하는 클릭 데이터 등의 대한 정보를 포함하고 있다. 본 연구에서는 프로세스 마이닝 기법을 이용하여 사용 고객의 사용 패턴과 고객 그룹 간 특징을 분석하여, 궁극적으로 웹 서비스를 이용하는 고객들을 대상으로 서비스 품질을 향상시키고자 한다.

• 기록학연구
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• 제45호
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• pp.83-120
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• 2015

기록정보서비스는 이용자들의 행태를 관찰하고 그들의 정보요구를 파악하여 그에 맞는 기록정보에 연결하고 안내해주는 적극적인 행위이다. 그러나 국내 기록정보서비스에 대한 연구는 이용자를 세분화하여 개인화된 서비스를 제공해야 한다는 당위성을 인정하지만 구체적인 사례나 방안에 대해서는 논의되지 않고 있다. 웹의 대중화와 알 권리의 확산으로 웹기록정보서비스의 중요성이 대두되고 있지만, 현재 우리나라 대부분의 기록관리기관에서는 실무 현장에서의 인식이 부족하고 인력과 예산의 불충분으로 웹로그분석을 실시하지 못하고 있다. 그래서 기관의 기록정보서비스 담당자의 업무 효율성을 높여주면서 예산이 부족한 기관에서 활용될 수 있는 분석 도구의 도입이 필요하다. 웹애널리틱스는 사이트에 방문한 웹이용자가 남긴 웹로그를 분석하여 행태를 분석하는 것이다. 그 종류에는 여러 가지가 있는데 그 중에서도 구글애널리틱스는 무료로 다양한 분석 항목을 제공하고 있어 전 세계 많은 인구가 이미 사용하고 있다. 본 연구에서는 구글애널리틱스를 중심으로 웹애널리틱스를 소개하고 이를 실제 기관에 도입한 민주화운동기념사업회 사료관의 사례를 분석하여 구체적인 웹이용자 세분화와 서비스 개선 방안을 제시하고자 한다.

• 한국문헌정보학회지
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• 제49권1호
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• pp.173-200
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• 2015

이 연구는 J도 도립도서관의 대출과 운영현황을 조사 분석하여 향후 발전방안을 모색하는데 있다. 이를 위해 도서관 이용증 발급자 30,072명과 대출건수(2012~2013년) 705,447건을 분석하였으며, 도서관 발전계획 및 이용자 만족도를 조사하여 이를 비교분석하였다. 분석방법은 SPSS 21.0을 사용하였다. 이를 통해 도립도서관 이용자의 도서관 이용 행태 및 자료 이용 패턴 등을 확인하였으며, 분석 결과를 기반으로 도립도서관의 발전방안을 제시하였다.

• 대한의용생체공학회:의공학회지
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• 제45권2호
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• pp.75-80
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• 2024

This research investigates the influence of chair tilt functionality on biometric signals and user comfort, addressing the ergonomic challenges posed by modern sedentary lifestyles. Through an experimental study involving eight male participants, the impact of chair tilt on electromyography (EMG), heart rate, metabolic rate, pressure distribution, and distance between the lumbar spine and the lumbar support part of the chair was measured across different seating postures. The study utilized chairs with both synchronous and non-synchronous tilt mechanisms to explore how adjustments in chair design affect user comfort and physiological responses during prolonged sitting. Key findings suggest that chair tilt functionality can significantly reduce muscle activity and energy expenditure, enhancing user comfort and potentially mitigating health risks associated with prolonged sedentary behavior. Notably, the study revealed a preference among participants for chairs that aligned the rotational center of the tilt with the hip joint, highlighting the importance of this ergonomic feature in enhancing user comfort. Additionally, the research proposes a novel methodology for assessing seating comfort through the analysis of both biometric and physical signals, providing valuable insights for the development of ergonomic chair designs focused on user health and comfort.

• 대한산업공학회지
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• 제37권2호
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• pp.105-117
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• 2011

This study describes behavioral characteristics of Korean population over twenty years old in a variety of activities of daily living by analyzing the raw data of the time use survey provided by Statistics Korea (KOSTAT). Seven activities and forty four sub-activities of daily living were selected for analysis : personal care, employment, household care, family care, voluntary work and community participation, social life, recreation and leisure, and travel. In order to quantitatively understand how Korean adults spend their time for a day and how their lifestyle changes over time, we collected the time recorded by 3,673 respondents in three surveys over the past ten years (in 1999, 2004, and 2009). Then, we performed analysis of variance to compare the behavioral characteristics by user age and gender based on the mean time of each activity. The differences in behavior among user groups and over time could be used to design ergonomic products and services based on user experience, especially for universal design of housing and transportation facilities.

• 소성∙가공
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• 제21권7호
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• pp.403-411
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• 2012

The aim of this study was to predict the results of superplastic forming on magnesium alloy, by considering the grain growth using numerical simulations. Superplastic behavior of AZ31 alloy was investigated through a set of uniaxial tensile tests that cover the forming temperatures ranges from 375 to $450^{\circ}C$. All the material parameters in the model, which consists of a constitutive equation and a grain growth equation, were determined. The model was used in the finite element analysis for uniaxial tensile tests and superplastic blow forming, through a user-subroutine available within ABAQUS. From this study, the effect of grain growth during forming was evaluated. The results show that it is essential to include the effect of grain growth in predicting the behavior during superplastic forming of this magnesium alloy.

• 지식경영연구
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• 제10권2호
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• pp.85-103
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• 2009

Web 2.0, characterized as openness, sharing, and participation, has enabled Internet users to easily generate a variety of contents, and to share them through Web 2.0 services. Knowledge search service (KSS) is positioning itself as one of typical Web 2.0 services. Yet, few studies have sharpened our understanding of users' knowledge sharing behavior in the KSS environment. In order to address this knowledge void, this paper attempts to explore antecedents of their usage behavior in the KSS environment. Typically, they utilize stored knowledge and share their knowledge simultaneously. Considering this characteristic, our study regards service usage intention and knowledge sharing intention as final dependent variables. This study advances a research model based on Bhattacherjee's expectation-confirmation model, which is expanded by incorporating trust belief. Because of the openness of KSS, trust belief is believed to play a critical role in forming users' service usage intention and knowledge sharing intention. Furthermore, this study examines the difference of the antecedents' effects in terms of users' gender. We collected data from 275 respondents who have experience in using KSS. PLS (partial least squares) was employed for the analysis of the data. Analysis results confirm the important role of user satisfaction and trust belief in the formation of users' service usage intention and knowledge sharing intention. More importantly, trust belief has a more salient effect on knowledge service usage intention than user satisfaction. This study also shows the moderating role of users' gender. Finally, this paper provides managerial guidance on strategic planning aimed at improving users' service usage intention and knowledge sharing intention in the KSS environment.

• 유통과학연구
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• 제20권8호
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• pp.47-57
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• 2022

Purpose: The purpose of this study is to find out whether it has a significant effect or not, the 5 hypotheses proposed include the Attitude toward behavior variable on behavioral intention, Subjective norm on behavioral intention, Perceived behavioral control on behavioral intention, Behavioral intention on behavior and Perceived behavioral control on Behavior. Research design, data and methodology: The data processing method in this study uses the SEM method based on Partial Least Squares (PLS), The study was conducted on 100 respondents as a sample. Results: Based on the results of data analysis, it is concluded that from the 5 hypotheses proposed, only 2 have a significant effect, namely the subjective norm variable has a significant effect, on behavioral intention and the perceived behavioral control variable has a significant effect on behavior while the other 3 hypotheses have no significant effect. The results of this study are expected to help the public to make decisions in utilizing the distribution of facebook marketplace. Conclusion: This study concludes that the distribution of the use of the Facebook marketplace is a subjective norm variable has a positive effect on the behavioral intention variable and the perceived behavioral control variable has a positive effect on the behavior variable.