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The study on PV module development using the silicone encapsulation (Encapsulation용 silicone을 사용한 모듈제조 공정에 대한 연구)

  • Jung, In-Sung;Lee, Woo-Jin;Lee, Bum-Su;Yang, O-Bong;Jung, En-Suk;Kim, Chong-Yeal
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.05a
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    • pp.130.1-130.1
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    • 2011
  • Nowadays, the number of PV module corporation is increasing due to demand growth of silicon solar module. However almost study of module is research about increasing of efficiency for it. This study is evaluation and development for process of module using the silicone encapsulation material instead of existing EVA sheet. We are changed adding material ratio on silicone and thickness of silicone. So we get better efficiency than EVA sheet through the evaluation for silicone liquid and modulation. Also, we are test after establishing manufacture system being able to quicker than existing modules line. The result of EVA sheet is average 207.47W and silicone material is 211.32W so we think that silicone is better than EVA sheet.

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A Study on the Design and Implementation of Web Based Collaborative Learning Systems for Improving Interactivity among Learners (e러닝환경에서 학습자간 상호작용활동 증진을 위한 웹기반 협동학습시스템의 설계 및 구현에 관한 연구)

  • Lee, Dong-Hoon;Lee, Sang-Kon;Lee, Ji-Yeon
    • Journal of Information Technology Services
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    • v.6 no.3
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    • pp.195-207
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    • 2007
  • This study describes the design and implementation of web based collaborative learning system to improve interactivity among learners. Based on suggestions from previous studies, the system is composed of three main parts : the community module, the learning module, and the administrative module. The study participants were 254 university students from two different institutions. They were divided into 43 groups and asked to complete an online TOEIC preparation module using the learning system over 4 weeks. Survey data were collected at three points from each participant-before and 3 weeks after the beginning of the online module and at the completion of the module. The result indicates that the usage of this system is positively related to the learners' collaborative learning activities, the level of sense of community, and learner satisfaction both at the individual and group levels.

Usability Test Analysis on Integrated Automotive Cockpit Module System (자동차 전장 통합 모듈 시스템에서의 사용성 평가)

  • 홍성만;박범
    • Proceedings of the Safety Management and Science Conference
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    • 2003.11a
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    • pp.237-245
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    • 2003
  • More and more many people show a keen interest in the ergonomics application car. One of the recent trends of cockpit development is to integrate fore part of whole cockpit and compartment. The goal of this study is to develop and Analysis of User's Convenience a cockpit prototype based on the design guide of cockpit integration module. The process of this study has been followed analyzing development trend of next generation Automotive cockpit, extracting the design factor needed to making integration module and laying down the design guide of cockpit integration module. Finally, this study is indicate an instance that evaluation of utilization with Integrated Automotive Cockpit Module System.

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Usability Test Analysis for Design on Integrated Automotive Cockpit Module System (자동차 전장 통합 모듈 시스템 설계를 위한 사용성 평가)

  • 홍성만;박범;이성용
    • Journal of the Korea Safety Management & Science
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    • v.5 no.4
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    • pp.157-167
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    • 2003
  • More and more many people show a keen interest in the ergonomics application car. One of the recent trends of cockpit development is to integrate fore part of whole cockpit and compartment. The goal of this study is to develop and Analysis of User's Convenience a cockpit prototype based on the design guide of cockpit integration module. The process of this study has been followed analyzing development trend of next generation Automotive cockpit, extracting the design factor needed to making integration module and laying down the design guide of cockpit integration module. Finally, this study is indicate an instance that evaluation of utilization with Integrated Automotive Cockpit Module System.

Development and Application of SATEEC L Module for Slope Length Adjustment Based on Topography Change

  • Kang, Hyun-Woo;Kim, Ki-Sung;Park, Youn-Shik;Kim, Nam-Won;Ok, Yong-Sik;Kim, Jong-Gun;Choi, Yun-Ho;Lim, Kyoung-Jae
    • Korean Journal of Environmental Agriculture
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    • v.28 no.2
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    • pp.113-124
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    • 2009
  • Severe sediment-laden problem has been the hot issue in Korea. It was assumed that agricultural activities and landslides were the primary causes of these problems in watersheds. The USLE-based systems have been widely used in soil erosion studies. However the GIS-based USLE modeling system has limitation in USLE L factors. In this study, the SATEEC L module was developed to reflect the slope length segmentations in the fields. The SATEEC L module was applied to the study watershed to analyze the effects of using the SATEEC L module on estimated sediment. As shown in the comparisons between SATEEC estimated sediment with SWAT values, the SATEEC GA-SDR module derives the SDR with reasonably acceptable accuracies. However, it is worthy to note that the soil erosion using the SATEEC L module for the study watershed was lower than that without using the SATEEC L module by 25%, although the SATEEC estimated sediment values with and without using L module match the SWAT sediment values with similar accuracies. This is because the SATEEC GA-SDR module estimates lower SDR in case of greater soil erosion estimation without the L module and greater SDR in case of lower soil erosion estimation with the L module. This indicates that the SATEEC input parameters, especially L factor, need to be prepared with care for accurate estimation of SDR at a watershed scale and for accurate evaluation of BMPs in the watershed.

A Study on Satisfaction Evaluation of Korean Medicine Therapy Using Treatment Tool by Psychological Type (심리유형별 진료도구를 이용한 한방치료의 만족도 평가 연구)

  • Ji, Young Seung;Lee, Seung Min;Kim, Jeong Ho;Nam, Seung Kyu;Kim, Young Il
    • Journal of Acupuncture Research
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    • v.30 no.3
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    • pp.27-38
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    • 2013
  • Objectives : This study was designed to evaluate patient satisfaction of Korean medicine therapy using treatment tool by psychological type. Methods : 48 subjects were participated in this study. Before a treatment, we analyzed a patient's phychological type first by using a questionnaire. And then we divided 3 groups which were called a rational sympathy module group, emotional sympathy module group, control group. Manner of medical consultation according to patient's phychological type was carried out in all groups. After all treatment, we conducted a survey about medical service perception index, patient happiness index, medical satisfaction index. To evaluate a satisfaction degree, we analyzed results of survey statistically. Results : The results of the analysis, both rational sympathy module group and emotional sympathy module group got a higher score than control group statistical significantly on medical service perception index. Emotional sympathy module group got a higher score than control group statistical significantly on patient happiness index and medical satisfaction index. But rational sympathy module group only had a higher tendency than control group on patient happiness index and medical satisfaction index. Emotional sympathy module group got a higher score than rational sympathy module group on medical service perception index, patient happiness index and medical satisfaction index. Conclusions : Korean medicine therapy using treatment tool by psychological type consisted of patient's phychological type questionnaire and manner of medical consultation could improve a patient's satisfaction. It was more effective in emotional sympathy module group than rational sympathy module group.

A Study on the Operational Strategies of the Automated Container Terminals Using Simulation Techniques (시뮬레이션기법을 이용한 자동화 컨테이너터미널의 운용전략에 관한 연구)

  • 장성용;용운중
    • Proceedings of the Korea Society for Simulation Conference
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    • 2001.05a
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    • pp.36-42
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    • 2001
  • This paper presents the operational planning systems of automated container terminals. The proposed system is composed of berth allocation module, yard planning module, resource allocation module, sequencing module, and simulation module. All the sub-modules except resource allocation module are built into integrated simulation model using simulation package AutoMod. Simulation experiments are performed according to the number of AGVs and AGV allocation policies.

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Development of 100W thermoelectric power generation module (100W급 열전발전 모듈 기술 개발)

  • Moon, Jihong;Hwang, Jungho;Lee, Uendo
    • 한국연소학회:학술대회논문집
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    • 2015.12a
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    • pp.321-322
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    • 2015
  • Thermoelectric power generation has emerged as a promising alternative technology because it offers a potential application in the direct conversion of waste heat into electric energy. The performance of thermoelectric power generator depends on thermoelectric materials and thermoelectric power module designs. The main objective of this study is to design a 100W thermoelectric generation (TEG) module and to get optimal operating conditions of the module. The design and performance of the TEG module will be presented.

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DING INJECTIVE MODULES OVER FROBENIUS EXTENSIONS

  • Wang, Zhanping;Yang, Pengfei;Zhang, Ruijie
    • Bulletin of the Korean Mathematical Society
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    • v.58 no.1
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    • pp.217-224
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    • 2021
  • In this paper, we study Ding injective modules over Frobenius extensions. Let R ⊂ A be a separable Frobenius extension of rings and M any left A-module, it is proved that M is a Ding injective left A-module if and only if M is a Ding injective left R-module if and only if A ⊗R M (HomR(A, M)) is a Ding injective left A-module.

A Study on the Heat Transfer Characteristics Around a Surface-Mounted Air-Cooled Module for the Flow Angle-of-Attack (흐름 영각에 따른 강제공랭 모듈 주위의 열전달 특성에 관한 연구)

  • Park, Sang-Hui;Sin, Dae-Jong
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.26 no.9
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    • pp.1267-1275
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    • 2002
  • An experimental study was performed to investigate adiabatic wall temperature and heat transfer coefficient around a module cooled by forced air flow. The flow angle of attack to the module were 0$^{\circ}$and 45$^{\circ}$. In the first method, inlet air flow(1~7m/s) and input power.(3, 5, 7W) were varied after a heated module was placed on an adiabatic floor(320$\times$550$\times$1㎣). An adiabatic wall temperature was determinated to use liquid crystal film. In the second method to determinate heat transfer coefficient, inlet air flow(1~7m/s) and the heat flux of rubber heater(0.031~0.062W/$m^2$) were varied after an adiabatic module was placed on rubber heater covering up an adiabatic floor. Additional information is visualized by an oil-film method of the surface flow on the floor and the module. Plots of $T_{ad}$ and $h_{ad}$ show marked effects of flow development from the module and dispersion of thermal wake near the module. Certain key features of the data set obtained by this investigation may serve as a benchmark for thermal-design codes based on CFD.