• 한국환경교육학회지:환경교육
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• 제20권1호
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• pp.19-27
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• 2007

This study was intended to answer the question, 'What kinds of effects will be aroused by experiential learning for environment based on living area?'. Experiential learning for environment was operated to 17 elementary school students in 4th grade in Kyeong-san city. The results were drawn analyzing the mind map for the changes of environmental consciousness before and after learning, and they are as below. First, it had an effect to change the meaning association of the relationship between 'river and me'. Meaning association was 'river-a thing' before experiential learning, but it was developed as 'river-a thing-me' after learning. This means that students expanded understanding of the world that they were belonging and self-spatialization was promoted. The expansion of meaning association would be a start point and a method to promote their segmentation for each student. Second, students could self-directly modify misconception and preconception after experiential learning. It showed that students could find meanings in the world that they were belonging by experiential learning for environment, and misconception obtained by concept learning without actual situation could be revised through the truth recognition in meanings, and student could see what things displayed. Therefore preconception would be corrected. Of course, everything would not be completed by just one time of experiential learning, and consistent experience learning should be operated. Third, experiential learning promoted the change of sensitivity. Students had shallow sensitivity, which appeared in the relation with things, since having learned only inside of class without a direct observation. However their sensitivity could be increased by experiencing specific things. Fourth, there was the change of classification recognition. Students found properties of things with a direct observation. It raised their ability to classify things, and to understand an individual thing in 'a class'.

• 한국한의학연구원논문집
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• 제17권2호
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• pp.115-120
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• 2011

Objectives : The purpose of this study is to develop an apparatus which can take a facial image by self-operated capturing technique. The user can obtain one's facial image immediately after adjusting facial tilt and focusing distance. The system has been designed for classifying Sasang typology based on facial image. Methods : The system is composed of a Webcam, one-way glass mirror and mini LCD. The Webcam takes a facial image which is displayed on the mini LCD. Then the user can see and adjust to the right position in the real time through the image mirror-reflected from the mini LCD. The optical sensor is used to estimate the proper focusing distance. To verify the performance of the system, 11 characteristic points on the facial image are used and compared with high performance DSLR camera(D700) by applying the coefficient of variance and Bland-Altman Plot. Results : The developed system and D700 show enough agreement with the small coefficient of variance to analyse constitutional types with a facial im mage. However, the result of Bland-Altman plot shows that the width parameters have distortions owing to short focusing distance. Conclusions : The system is expected to be utilized on u-healthcare services for home environment after improving the distortion in the width parameters.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.2307-2310
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• 2005

A pressurizer is one of the major safety related equipment of nuclear power plants. In order to inspect and maintain the internal structures of a pressurizer, jumpers have to enter the pressurizer, in spite of the high dose exposure. Therefore, a tele-operated robotic manipulator has been developed, which consists of four parts with 2DOFs arms, a gripper, base frame, and control console. The task of this robotic manipulator is to extract the damaged electric heaters and inspect the internal structure of the pressurizer. The gripper hanging from the manipulator approaches the heaters and extracts the damaged heater by using a self-locking mechanism. In order to investigate the structural stability of the robotic manipulator, a stress analysis has been performed by using the ANSYS code. The results of this paper include the position control and vibration control of robotic gripper and the development of processing visual information for a vision sensor.

• 한국식생활문화학회지
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• 제14권5호
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• pp.487-495
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• 1999

The objectives of this study were to analyze customer satisfaction by operational characteristics in business & industry foodservice operated by contracted foodservice management company. The instruments were developed by reviewing literatures on customer satisfaction and by intervewing with managers, employers and customers. A total of 1000 questionnaires were hand delivered at the ten contracted foodservice operations by designated coordinators. A total of 833 questionnaires were usable; resulting in an 83.3% response rate. Statistical data analysis was completed using the SAS 6.04 for description, T-test, ANOVA. Overall customer satisfaction score for office building foodservice was significantly higher than those for manufacturing company foodservice. As for the type of management contracts, overall customer satisfaction score for management fee contracts was significantly higher than those for profit and loss contracts. With regard to payment method, overall customer satisfaction score for meal card was higher than those for POS system. Concerning the categories of service, overall customer satisfaction for combo-tray service was higher than those for cafeteria-tray service and partially self-service. As for types of menus, the score of overall customer satisfaction was not significantly different between cafeteria menu and double choice menu.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2008년도 추계학술대회 논문집
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• pp.21-24
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• 2008

We have developed a $kW_e$ class liquid fuel based solid oxide fuel cell (SOFC) system. Our final target is to develop the 1 $kW_e$ diesel based SOFC system for residential power generator(RPG). In this study, we present the conceptual design of SOFC system. System is composed of hot-box and cold-box. Planar typed SOFC stack, heat exchanger, combustor for stack tail gas, and fuel processor, such as fuel reformer and desulfurizer, are contained in the hot-box. And several balance of plants(BOP), such as fuel suppliers and controller, are contained in the cold-box. Before the SOFC system fabrication, we have already operated the selfsustaining fuel processor, and heat exchange of all heat-related components is simulated using ASPEN HYSYS, because heat maintenance and management in hot-box are important for stable operation of SOFC system. The self-sustained fuel processor was successfully operated for about 250 hours, and heat exchange is enough to operate the SOFC system.

• 한국의류학회지
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• 제38권5호
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• pp.755-768
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• 2014

This study explores the situation of domestic production and import of dyes as well as type of dye supplier and type of dyer in the Joseon Dynasty based on an analysis of relevant documents. The findings are as follows. Many kinds of natural dyes and natural mordant were produced in the Joseon Dynasty. Some were imported from other countries when in short supply or for diplomatic reasons. As the government organization in charge of the dyes supply and demand, the Jeyonggam was cooperated with the Gongin merchants. As private merchants, there existed Hwapijeon merchants and Cheongramgye merchants. Cheongramgye merchants were both the producer and the seller of indigo sediment. There existed two types of dyers, such as government-operated dyers and private dyers. The Yeomjang (master dyers) and Yeommo (female dyers) were subjugated to government departments in the early part of Joseon Dynasty, but gradually allowed to pursue self-profit. The Yeomga was the private dye house that existed in the early period of the Joseon Dynasty. Ladies and female servants were also allowed to dye for family use or to help in livelihoods. Jeonyeomga was a branch specialized in indigo dyeing. Lastly, the Yoemgye were the merchants of dyed paper and textiles as well as dyers.

• 아동학회지
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• 제31권4호
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• pp.1-14
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• 2010

The purpose of this study was to investigate the relationship between depression, colleagues/ supervisor's emotional support and burnout experienced by teachers in kindergartens and childcare centers. The subjects were 195 teachers who worked in kindergartens or childcare centers in Daegu and Gyeongbuk Province. Questionnaires, which required self-report by teachers, were used to investigate depression, colleagues/supervisor's emotional support and burnout. The data collected were analyzed by means of paired t-test, Pearson's correlation, simple regression, hierarchial regression, using SPSS Win 15.0. The results are as follows. (1) The emotional support from colleagues was significantly higher than from that provided by the supervisor. Moreover, teachers' depression levels were positively associated with burnout. (2) Colleagues' emotional support operated as major determining factor with the effect that burnout decreased as colleagues' emotional support levels increased. There were observable interactional effects between depression and the emotional support provided by colleagues' to colleagues experiencing burnout. (3) The supervisor's emotional support operated as a major factor with the effect that burnout decreased with a rise in the levels of a supervisor's emotional support. No interactional effects were observed between depression and supervisor's emotional to colleagues dealing with burnout.

• 전기학회논문지
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• 제66권3호
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• pp.486-492
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• 2017

In recent years, renewable energy sources have been mentioned as solution to environmental regulation and energy supply-demand. Energy storage systems are needed to mitigate the intermittent output characteristics of renewable energy sources and to operate micro grid efficiently using renewable energy generation systems. However, despite the necessity of energy storage system, this cannot secure the economical efficiency of the energy storage system by high initial cost. In this paper, a micro grid is constructed to supply electric power to industrial customers by using solar power generation system and energy storage system among renewable energy generation power sources and operated to improve energy independence. In the case study, we use photovoltaic system which is representative renewable energy generation system. Unlike conventional photovoltaic system, this system uses floating photovoltaic system with the advantage of having high output and no land area limitations. It is operated for the purpose of improving energy independence in the micro grid. In order to secure economical efficiency, the energy storage system operates a micro grid with a minimum capacity. Finally, this paper calculates the appropriate subsidy for the energy storage capacity.

• 보건행정학회지
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• 제11권2호
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• pp.16-28
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• 2001

This study was to compare multidimensional outcomes of patient's satisfaction after cataract surgery and to identify factors influencing satisfaction after operation. Patient's satisfaction was measured with three dimensions : interpersonal care, physician explanation and hospital care. Overall satisfaction was measured as means of three dimensional scores. For the study, a prospective study was performed with 389 patients who had undergone cataract surgery for either one eye or both eyes. The surgery was performed by 20 ophthalmologists who were practicing at university hospitals and general hospitals. Patients were interviewed and clinical data (the visual acuity of operated eye, visual function, symptom score and satisfaction with vision) were obtained. The doctors were questioned with self-reported questionnaire forms. Medical records were also examined to understand surgery Process. The survey was conducted before(389) and after operation(327). Alter excluding cases with incomplete data, 3n cases were enrolled In this study. Both the overall satisfaction and the satisfaction with physician explanation increased after the operation whereas the satisfaction with interpersonal care and hospital care did not change significantly. Multiple regression analysis showed that the level of education, baseline satisfaction scores and the degree of vision improvement were statistically significant variables. The preoperative lower level of education, higher level of overall satisfaction (interpersonal care, physician explanation, hospital care scores) and the more the satisfaction with vision improvement were associated with the improvement of postoperative satisfaction scores.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.1080_1081
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• 2009

This paper proposes a cooling system using self tuning PI controller for improving the output of BIPV module. The temperature characteristics in regard to improving the output of BIPV system has rarely been studied up to now but some researchers only presented the method using a ventilator. The cooling system efficiency of BIPV module applied to a ventilator mainly depends on the weather such as wind and insolation etc. Because the cooling system of BIPV module using a ventilator is so sensitive, that is being set off by wind speed at all time but is unable to operate in the nominal operating cell temperature(NOCT) which is able to make the maximum output. The paper proposes the cooling system using thermoelectron by self tuning PI controller so as to solve such problems. The thermoelectron control of self tuning PI controller can be controlled independently in the outside environment because that is performed by micro-controller. The temperature control of thermoelectron, also, can be operated around NOCT through algorism of the temperature control. Therefore, outputs of the whole system increase and the efficiency rises. The paper demonstrates the validity of proposed method by comparing the data obtained through a experiment of the cooling method of BIPV using a ventilator and proposed thermoelectron