• 한국과학교육학회지
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• 제15권4호
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• pp.417-428
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• 1995

This study investigated Korean science teachers' concerns and needs regarding inquiry testing to cope with the innovation called College Scholastic Abilities Test(CSAT), which was officially first administered as the nation-wide college entrance exam in 1994. This study adopted Concerns Based Adoption Model(CBAM) as the theoretical framework developed by Hall et al. 60 high science teachers (30 physics, 20 earth science, 10 others) were involved for the main study in August, 1992. In general. science teachers demonstrated a concern profile similar to that of 'nonusers'. They showed high level of concerns on the 'information' and 'personal' stage, while low level of concerns on 'management' and 'consequence' stage. Science teachers expressed their strong needs for knowledge and support to facilitate inquiry teaching and testing, text books written in inquiry mode. It is recommended that in-service trainings be provided based on the concerns and needs of teachers for a better teacher training and successful implementation of the innovation.

• 한국신뢰성학회지:신뢰성응용연구
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• 제14권4호
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• pp.220-224
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• 2014

A Bayesian zero-failure reliability demonstration test method for products with Weibull lifetime distribution is presented. Inverted gamma prior distribution for the scale parameter of the Weibull distribution is used to design the Bayesian test plan and selecting a prior distribution using a prior test information is discussed. A test procedure with zero-failure acceptance criterion is developed that guarantee specified reliability of a product with given confidence level. An example is provided to illustrate the use of the developed Bayesian reliability demonstration test method.

• 대한기계학회논문집A
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• 제22권4호
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• pp.879-886
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• 1998

It is very important to understand the vibration and noise characteristics of a structure to developed quiet machines and lessen their noise. In this paper, the vibration and sound radiation characteristics of a simple and a bar-stiffened plate have been investigated using numerical and experimental techniques. In numerical process, FEM analysis has been performed for the vibration level ; the time-space squared and averaged velocity and BEM analysis for sound radiation parameters ; sound power and radiation efficiency. In experimental process, FFT signal processing method has been used. While a power from an exiciter is applied to the structure by using a point contact, sound intensity and vibration level has been measured. Based on these two data, the radiation efficiency has been calculated. Results show that the radiation efficiency for the stiffened structure increases compared to the simple plate, due to the extra edges provided by the stiffener.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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• pp.828-831
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• 1996

Radiation monitoring system is needed at nuclear power plant and nuclear facility. Manual survey techniques are commonly used, but they are time consuming and somewhat inaccurate. Automatic radiation surveys are very important because it provides significant savings in men-rem and wages. Unmanned, remote automatic radiation measurement system should be small and light-weighted in order to mount on robotic system. The system we have developed consists of detection parts, signal processing part, interface, and software part. Position information is provided by using of a collimator. The measurement process is achieved by the scanning of detector and image processing techniques are used to display radiation levels. We designed collimators, detectors, signal processing circuit, and constructed prototype system. The goal of this system is the mapping of camera image and radiation level distribution.

• 전자공학회논문지A
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• 제30A권2호
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• pp.76-85
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• 1993

This paper describes the design of a technology-independent logic, function, and timing extraction system from SPICE-like network descriptions. Technology-independent extraction mechanism is provided in the form of technology files containing the rules for constructing logic gates and functional blocks. The designed system can be more effectively used in cell-based design by describing the cells to be extracted. Timing extraction is performed by using a linear RC gate delay model which takes interconnection delay into account. Experimental results show that estimated delay is within 10 percents for logic gate circuits when compared with SPICE. Through higher-level design descriptions obtained by extraction, design cycles can be considerably reduces.

• 한국신뢰성학회지:신뢰성응용연구
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• 제13권1호
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• pp.1-10
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• 2013

A Bayesian zero-failure reliability demonstration test method for products with exponential lifetime distribution is presented. Beta prior distribution for reliability of a product is used to design the Bayesian test plan and selecting a prior distribution using a prior test information is discussed. A test procedure with zero-failure acceptance criterion is developed that guarantees specified reliability of a product with given confidence level. An example is provided to illustrate the use of the developed Bayesian reliability demonstration test method.

• 한국신뢰성학회지:신뢰성응용연구
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• 제17권2호
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• pp.112-121
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• 2017

Purpose: The most previous works on designing accelerated life tests (ALTs) are focused on the application of a single stress. Because of the difficulty to obtain the sufficient information in a reasonable duration using single stress only, there is needed in practice to use multiple-stress ALTs frequently. This paper presents new practical plans with two stresses for Weibull distribution. Methods: The four-level practical plans based on rectangle test region are proposed and compared with the corresponding three-level statistically optimal plans. Sensitivity analyses for assumed design parameters and life-stress relationship are conducted. Results: A procedure to choose practical ALT plans is illustrated with a numerical example and guidelines for planning two-stress ALTs are provided. Conclusion: The proposed two-stress ALT plans on practical constraints to assess a quantile of Weibull lifetime distribution at the use condition are efficient and robust.

• 한국비블리아학회지
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• 제29권1호
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• pp.153-184
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• 2018

본 연구는 공공도서관 사서의 감정노동수준이 직무만족 및 도서관정보서비스 제공수준에 미치는 영향을 살펴본 것이다. 감정노동수준을 독립변수로, 직무만족과 도서관정보서비스 제공수준을 종속변수로, 조직문화를 조절변수로 설정하였다. 서울시 공공도서관 사서 220명을 무작위로 선정하여 인터넷으로 설문지를 배포하여 수거하였고, SPSS 18.0 프로그램을 활용하여 신뢰도 분석, 상관계수분석, 다중회귀분석, 조절회귀분석을 실시하여 분석하였다. 연구결과 첫째, 공공도서관 사서는 이용자에게 자신의 감정을 표현하는 것을 좋아하지 않고, 실제 감정과는 다르게 더 긍정적으로 표현하고자 함을 알 수 있었다. 둘째, 사서들은 감정노동을 경험하지만, 업무를 수행하는 데 있어 오히려 성취감을 느끼고, 하고 있는 일에 대해 자랑스럽고 기쁘게 생각하게 된다는 것을 알 수 있다. 이는 자신이 하는 일이 전문적인 일이라는 인식이 강하므로, 감정노동을 경험해도 그것을 극복해야 하며, 그렇게 함으로써 직무에 대한 긍지를 가질 수 있다. 셋째, 사서들은 감정노동을 경험하게 되더라도, 합리적인 직무평가가 목표를 가지고 실시되고, 직원들 간의 관계가 좋다면 업무에 있어 성취감을 높일 수 있다. 또한 직원의 평가가 실적위주이더라도, 사서들은 이용자가 그들의 서비스에 만족하고, 그 서비스 수준이 적절하다면, 봉사 정신을 높일 수 있다.

• 한국식품조리과학회지
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• 제29권1호
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• pp.73-79
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• 2013

The purpose of this study was to examine the level of importance of service quality provided by restaurant when industry meal service recipients used the restaurant. Additionally, the purpose was to compare the level of satisfaction on the respective service qualities of company cafeteria and outside restaurant. The level of relative importance and satisfaction of service quality attributes are comparatively analyzed using the Important-Performance Analysis (IPA) of customers in order to provide basic information on the direction of marketing to efficiently operate company foodservice facilities. Restaurant service qualities were divided into the six factors of hygiene, convenience, food, environment, subsidiary services and food distribution process. The results revealed that the 'environment' of both company cafeteria and outside restaurant was needed to improve as quickly as possible. Additionally, it was found that the level of satisfaction was higher in the 'food' and 'environment' factors when using company cafeteria and outside restaurants, which would become an important attribute for the company foodservice recipients to use outside restaurants than using company cafeteria. Accordingly, it could be said that company cafeteria will need further control of the 'food' and 'environment' factors.

• 복식
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• 제63권1호
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• pp.120-134
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• 2013

This study was intended to investigate the designs that are displayed on fashion windows, specifically the originality of its designs, from here on noted as "design originality", and the effects it has on the attitudes of consumers toward fashion brands and their purchasing intentions depending on their level of clothing involvement. For the purpose of this study, 10 pictures of creative fashion window display designs from Fifth Avenue in New York were selected and they were shown to 200 college students in Busan in order to collect data for the analysis. The results are as follows: 1) Factor analysis identified four factors that impacted how consumers judged design originality, uniqueness, humor, favorable impression and advanced design. 2) The four factors of design originality in fashion window display significantly affected consumer's evaluation on usefulness of information provided by the window display, attitudes toward fashion brands and purchase intention. 3) The respondents were separated into two groups depending on their level of clothing involvement. Consumers with high level of clothing involvement showed that they were influenced more by the design originality when making purchase decisions. Especially, the uniqueness factor and advanced design factor had more effect on brand attitudes and purchase intention in high level of clothing involvement group. The results revealed that creative fashion window display design are important marketing strategic tools that affect attitudes of consumers toward brands and their purchasing intentions.