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JOURNAL OF THE KOREAN INSTITUTE OF PLANT ENGINEERING

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수록정보
23권2호(2018) |수록논문 수 : 4
간행물 제목
26권2호(2021년 06월) 수록논문
최근 권호 논문
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KCI등재

1설비오류진단에서 가중 증거 척도를 이용한 다중센서 데이터 융합

저자 : 최성운 ( Sungwoon Choi )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 26권 2호 발행 연도 : 2021 페이지 : pp. 5-19 (15 pages)

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This study proposes a multisensor fusion method to accurately detect the evidence of fault target when machine fault evidences are highly conflicting and when the machine fault evidences between sensors have no similarities.
This fusion method uses a combined weight which is composed of evidence entropy and belief distance. In this study, improved evidence entropy (IEE) system independently and broadly measures uncertain information of rarely occurring fault evidence. IEE measure includes four major factors including the mass function, the numbers of all fault targets, focal elements and intersection between focal elements. Among these four factors, the redundant intersection part of all fault targets was removed to reflect more uncertain information volume and quality. Based on the degree of conflict, Euclidean distance and cross entropy, belief distance measure optimizes consistency and similarity between sensor evidences.
Combined weight is adjusted with the fault target evidences and fused by orthogonal combination rule. Numerical cases in machine fault diagnosis are demonstrated to describe the practicality and accuracy of the proposed multisensor data fusion rule.

KCI등재

2극소불량률 관리를 위한 Zp-EWMA 관리도 설계

저자 : 김진국 ( Jin-kuk Kim ) , 김창수 ( Chang-soo Kim )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 26권 2호 발행 연도 : 2021 페이지 : pp. 21-30 (10 pages)

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The conventional Shewhart control chart techniques have found wide application in the manufacturing industries. However that chart is less sensitive to a very small shift and fraction nonconforming. Kim & Um(2012) first introduced the ZP control scheme for controlling a very small fraction nonconforming at the ppm level. The purpose of this paper is studying the exponentially weighted moving average(EWMA) control chart for detecting small shifts relatively and design the ZP - EWMA control charts combined with ZP. In addition, to obtain sensitivity to the initial phase of the process, the FIR ZP - EWMA control charts is analyzed to confirm the performance as actual case.

KCI등재

3SUV 자동차 내부에서 마이크로폰 위치 선정에 관한 연구

저자 : 김효수 ( Hyosoo Kim ) , 강성진 ( Kang Sungjin ) , 최종태 ( Choi Jongtae ) , 황인극 ( Inkeuk Hwang ) , 이용건 ( Lee Yong Keon )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 26권 2호 발행 연도 : 2021 페이지 : pp. 31-39 (9 pages)

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In recent years, vehicles are changing from means of transportation to means of providing various conveniences by reflecting the needs of consumers. In response to these changes, vehicle digital technology is developing, and the installation of mobile and multi-devices in vehicles is also increasing significantly. However, the more various digital technologies in the vehicle are reflected, the more handling mobile and multi-devices while driving, which may increase the risk of traffic accidents due to distraction and carelessness.
This thesis investigates the installation position of the microphone in different types of vehicles, and presents the optimal installation position of the microphone in the vehicle, which is recognized the driver's speech when the driver makes a sound while seated in the driver's seat.

KCI등재

4휴먼에러 저감을 위한 도시철도 운전실 레이아웃 표준화 연구

저자 : 갈원모 ( Won-mo Gal ) , 염병수 ( Byeoung-soo Yum )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 26권 2호 발행 연도 : 2021 페이지 : pp. 41-47 (7 pages)

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Currently, locomotive cabs' layout differ depending on the type of train vehicles. In order to reduce human error of drivers, systematic research including analysis of the working conditions of urban railroads in Korea and standardization measures are needed accordingly. Through the survey of 247 drivers working Seoul Metro Lines 1, 2, 3 and 4 and interview with related experts, we will identify areas of vulnerability in the driver human error. Many drivers felt uncomfortable with the distinction between the handling buttons, the distance between switches, the movement and function, and the arrangement by operation frequency, It was also able to identify difficulties in identifying the display and operation by color and symbol when handling the control device, as the viewing range and physical conditions differed.

KCI등재

5전두엽의 알파파 활성패턴과 실내온도가 생산성에 미치는 영향

저자 : 김명호 ( Myung Ho Kim )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 26권 2호 발행 연도 : 2021 페이지 : pp. 49-56 (8 pages)

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In this study, concentration were measured in the air conditioned room by subjects of two type: A and B. The state of air conditioned room was in relative humidity 50[RH%] and intensity of illumination 1000[lux] with arranging up variable temperatures from 19[℃] to 30[℃] at intervals of 3[℃].
At the result, 25[℃] for A type and 22[℃] for B type, relative Mα wave, relative Mβ wave, SEF50 and SDNN were invigorated and both sides α wave asymmetry quotient, HRT, stress quotient and fatigability were declined. It was found that A type was sharper than B type about temperature, and also they have different preferences for productivity and concentration about temperature.

KCI등재

6포스트 코로나 시대 온라인 플랫폼 프로젝트중심학습을 활용한 전문직 간 교육 프로그램 개발 : 보건계열 대학생을 중심으로

저자 : 주현정 ( Hyun-jung Ju ) , 윤보영 ( Bo-young Yoon ) , 천부순 ( Pu-soon Chun ) , 김상희 ( Sang-hee Kim )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 26권 2호 발행 연도 : 2021 페이지 : pp. 57-64 (8 pages)

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Online learning has been provided to students in universities due to the spread of COVID-19. Online collaborative learning can support interaction between learners and develop problem-solving and self-directed learning abilities. Interprofessional education (IPE) develops healthcare students as future interprofessional team members by learning together about each others' roles and practicing collaboration and teamwork, which can provide quality patient care. The purpose of this study is to develop an IPE program utilizing online platform project-based learning. In the IPE program, participants are faculty members and students from three departments―medicine, nursing, and pharmacy. At the phase of design, we defined three core competencies―communication, collaboration, and professionalism―and course objectives, organized student groups and matched the groups with faculty members using a team-teaching model, and selected online platform project-based learning as instructional methods. At the phase of development, we developed learning processes and content for a fifteen-week-long course, including six steps: preparing, selecting, planning, executing, creating, and presenting, and evaluating. We also developed a guide for instructors and strategies for students' team projects. For instructors to play a role facilitators in an online learning environment, faculty development systems and resources will be needed. Future studies will need to conduct program evaluations to investigate the effectiveness of the IPE program.

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KCI등재

1Cell 생산방식에 의한 다품종소량 생산 시스템의 최적화

저자 : 이경수 ( Kyung-soo Lee ) , 홍정의 ( Jung-eui Hong )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 23권 2호 발행 연도 : 2018 페이지 : pp. 3-14 (12 pages)

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In order to produce products in response to the orders that require different functions for each customer, Company A seeks to identify and improve the problems of the line-lot production method, which is the production method adopted by the existing company A. Through this study, it was possible to improve production flexibility and productivity by changing to cell production method suitable for small quantity production of various kinds so as to flexibly respond to market and customer's demands. Through these improvements, we will be able to respond to diversified customer needs in real time as well as improve productivity and profit generation.
In addition, it acted positively to cultivate the work capacity of the production worker of company A, which served as an opportunity to increase the expectation of the fun of work and the compensation accordingly.

KCI등재

2하둡 에코시스템과 스프링 프레임워크를 기반으로 빅데이터 활용 시스템의 설계 및 구현

저자 : 이명호 ( Myeong-ho Lee )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 23권 2호 발행 연도 : 2018 페이지 : pp. 15-21 (7 pages)

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Rapid data explosion of data generated by ordinary consumers and unstructured data has a great influence on how data is used. In the future, Big Data are used to make important decisions of the organization, and the desire to interpret various patterns hidden in many heterogeneous data, to predict the future and to find value is getting bigger, and it is demanding quick service based on the latest information. However, there are a lot of industrial cases that utilize Big Data, but most of them are based on practical cases. Big Data-based systems based on the Hadoop Ecosystem and Spring Framework with Big Data technology were lacking. Therefore, this study collects the data retrieved from the Naver blog on the basis of the Hadoop Ecosystem through the Spring Framework on the web of the next generation web standards. After loading the collected data on the Hadoop Distributed File System(HDFS) and HBase, we design and implement a big data utilization system that can visualize POS-tagging analysis results through word cloud using Twitter POS-tagging analyzer based on the loaded data. In the future, we will provide a reference model for the Big Data utilization system that utilizes the Hadoop Ecosystem and the Spring Framework using the next generation web standards.

KCI등재

3탐색적 요인 분석을 사용한 히트 펌프 건조기의 소모 전력 분석

저자 : 이창용 ( Chang-yong Lee )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 23권 2호 발행 연도 : 2018 페이지 : pp. 23-33 (11 pages)

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In this paper, we investigate how common factors, shared by the variables related to the heat pump dryer, depend on the power consumption of the dryer. As the power consumption of a hear pump dryer, in general, attributes to many variables in a complicated fashion, it is not trivial to control the dependency of the power consumption on the variables. To overcome the difficulty in controling the power consumption, we utilize exploratory factor analysis under the assumption that the observed variance is attributable to a relatively small number of common factors. From the analysis we identified two common factors that account for about 74% of the total variance. It turned out that the variables loading highly on the first common factor are refrigerants of compressor, condenser, expansion, and evaporator; whereas the variables on the second common factor are water temperature of the condenser. We also found that the power consumption depends linearly on the first common factor. Thess results can be applied to a more elaborate control of the power consumption in the heat pump dryer.

KCI등재

4재고비용할당을 위한 협조적 게임이론 기법

저자 : 이동주 ( Dong-ju Lee ) , 이창용 ( Chang-yong Lee )

발행기관 : 대한설비관리학회 간행물 : 대한설비관리학회지 23권 2호 발행 연도 : 2018 페이지 : pp. 35-44 (10 pages)

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The cost allocation problem is how to equitably and rationally distribute the common cost of the joint products or services that provide different benefits to each economic entity. These cost allocation problems have been dealt with in many fields such as highway facilities, airport runways and multipurpose dams. Most studies on cost allocation have been conducted on the application of cooperative game theory. Cooperative game theory consists of a set of players, called coalitions, and utility function for these coalitions and studies on the fair compromise (cost allocation) for the players. The cost allocation method such as proportional method, incremental method, nucleolus, Shapley value, and SOC are studied. Inventory games of EOQ(Economic Order Quantity) and EPQ(Economic Production Quantity) with shortages are described and a various allocation methods are applied to these inventory games. We examines through examples if the cost allocation methods satisfy the desirable properties of completeness, rationality, and marginality.

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