컨테이너 보안장치 개발에서의 TRIZ 활용에 관한 연구

김광필(Kwang-Phil Kim),최형림(Hyung-Rim Choi),김재중(Jae-Joong Kim),이재기(Jae-Kee Lee),이강배(Kang-Bae Lee),김채수(Chae-Soo Kim) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.7

Container security device(CSD), ConTracer is used as an equipment for container cargo transportation safety. It is mounted inside of the container to sense opening and closing incidents of container door and monitor temperature, humidity, shock and internal condition of containers. It Supports 2.4GHz and 433MHz radio frequency and local area network communication modules. As it should be compatible with CSD regulations of US DHS(Department of Home Security), there are some difficulties in satisfying the requirements. This paper introduces an empirical case study for development of CSD, which is named as ConTracer. We adopt TRIZ (6 Step Creativity) which is well known as an useful and inventive problem solving technique for contradictive probelm. By evaluation of the performance, we successfully acquired the appropriate solution for the problem.

단일 입출고장치를 가진 다중 캐로절시스템의 운영방식에 관한 연구

김광필 ( Kwang Pil Kim ),강현순 ( Hyun Soon Kang ),김채수 ( Chae Soo Kim ) 대한설비관리학회 2009 대한설비관리학회지 Vol.14 No.2

Carousels are rotatable closed-loop storage systems for small items. We consider the multi-carousel system in which a S/R machine serves more than one carousel through a transfer device called traverser. The S/R machine is placed on the traverser and can be transferred to adjacent carousels. Since the cost of a traverser is estimated approximately to be a half of that of a S/R machine, the utilization of multi-carousel system is an effective way in reducing initial installation cost for a great number of manufacturing firms if the pallet demands are relatively low. In order to estimate the cost and performance accurately, analytic models of expected cycle time for single command and dual command operations. performance evaluations are fulfilled based on the expected cycle time models for each command operations.

북부CT검사 시 Organ Dose 계산을 위한 CTDIvol 당 Conversion Factor

김광필(Kwang Pil Kim),김문찬(Moon Chan Kim),남윤철(Yoon Chul Nam) 대한CT영상기술학회 2012 대한CT영상기술학회지 Vol.14 No.2

목적 Monte Carlo simulation software tool을 기반으로 하여 CTDIvol과 organ dose와의 상관관계를 알아보고자 하였으며, 이를 바탕으로 organ dose를 쉽게 계산할 수 있는 CTDIvol 당 conversion factor를 제시하고자 하였다. 대상 및 방법 ImPACT에서 제시하는 Monte Carlo simulation program인 Patient Dosimetry Calculator(version. 0.99x)을 사용하였다. 복부CT를 대상으로 하였으며 인체모형의 수학적 팬텀의 liver, stomach, kidney, colon, bladder, gonads의 장기에 대한 CTDIvol 당 conversion factor를 구하였다. CT장치는 GE, Philips, Toshiba, Siemens 사의 4 MDCT, 16 MDCT, 64 MDCT를 사용하였으며, 각각의 장치에서 관전압, mAs, beam collimation, pitch factor를 변화시키며 제시된 organ dose를 CTDIvol으로 나누어 conversion factor를 계산하였다. 결과 • G사의 80kVp를 사용한 복부검사에서 4 MDCT 장치에서의 liver, colon, bladder, gonads의 conversion factor는 1.08, 0.56, 0.48, 1.01이었고, 16 MDCT에서는 1.21, 0.57, 0.40, 0.90, 64 MDCT에서는 1.22, 0.64, 0.46, 1.03이었다. 120kVp를 사용하면 4 MDCT에서 1.30, 0.68, 0.48, 1.11이었고, 16 MDCT에서는 1.28, 0.69, 0.48, 1.12, 64 MDCT에서는 1.23, 0.68, 0.48 1.09이었다. • P사의 90kVp를 사용한 복부검사에서 4 MDCT 장치에서의 liver, colon, bladder, gonads의 conversion factor는 1.26, 0.68, 0.47, 1.10이었고, 16 MDCT와 64 MDCT에서는 1.25, 0.66, 0.45, 1.07이었다. 120kVp를 사용하면 4 MDCT에서 1.28, 0.68, 0.47, 1.00이었고 16 MDCT와 64 MDCT에서는 1.36, 0.73, 0.50, 1.15이었다. • T사의 80kVp를 사용한 복부검사에서 4 MDCT 장치에서의 liver, colon, bladder, gonads의 conversion factor는 1.00, 0.51, 0.46, 0.96이었고, 16 MDCT와 64 MDCT에서는 0.86, 0.45, 0.40, 0.84이었다. 120kVp를 사용하면 4 MDCT에서 1.22, 0.61, 0.40, 0.92이었고, 16 MDCT와 64 MDCT에서는 1.24, 0.65, 0.46, 1.03이었다. • S사의 80kVp를 사용한 복부검사에서 4 MDCT 장치에서의 liver, colon, bladder, gonads의 conversion factor는 1.21, 0.64, 0.44, 1.04이었고, 16 MDCT에서는 1.19, 0.63, 0.43, 1.02, 64 MDCT에서는 1.36, 0.73, 0.52, 1.14이었다. 120kVp를 사용하면 4 MDCT는 1.24, 0.67, 0.46, 1.04이었고, 16 MDCT에서는 1.24, 0.66, 0.45, 1.04, 64 MDCT에서는 1.35, 0.73, 0.51, 1.16이었다. 결론 CT검사 시 장비콘솔에 표시되는 CTDIvol과 본 연구를 통하여 제시된 conversion factor를 사용하면 organ dose를 특별한 선량측정 장비 없이도 쉽게 계산할 수 있으며 환자의 피폭선량을 관리하는데 유용하리라 사료된다. I. Purpose To know the connection of CTDIvol and organ dose based Monte carlo simulation software tool, the foundation of that, to suggest conversion factor per CTDIvol that easily calculating organ dose. II. Meterial and Methods We used Patient Dosimetry Calculator(version 0.99x) which is Monte Carlo simulation program suggested ImPACT. The target is abdominal CT exam, to get conversion factor per CTDIvol for liver, stomach, kidney, colon, bladder, gonads organs of human body mathematical models. CT machines are used 4 MDCT, 16 MDCT and 64 MDCT by GE, Philips, Toshiba, Siemens, and to calculate conversion factor that organ dose, which are presented by changing kVp, mAs, beam collimation, pitch factor of each machine, divide by CTDIvol. III. Result • Abdomen-pelvis exam by G company 80 kVp: for 4 MDCT equipment, conversion factors of liver, colon, bladder, gonads are 1.08. 0.56, 0.48 and 1.01, for 16 MDCT, 1.21, 0.57, 0.40 and 0.90, for 64 MDCT, 1.22, 0.64, 0.46, and 1.03. For using 120kVp, 4 MDCT get 1.30, 0.68, 0.48, 1.11, 16 MDCT get 1.28, 0.69, 0.48, 1.12 and 64 MDCT get 1.23, 0.68, 0.48 1.09. • Abdomen-pelvis exam by P company 90 kVp: for 4 MDCT equipment, conversion factors of liver, colon, bladder, gonads are 1.26, 0.68, 0.47 and 1.10, for 16 MDCT and also 64 MDCT, 1.25, 0.66, 0.45 and 1.07. For using 120 kVp, 4 MDCT get 1.28, 0.68, 0.47, 1.08, 16 MDCT and 64 MDCT get 1.36, 0.73, 0.50, and 1.15 as the same. • Abdomen-pelvis exam by T company 80 kVp: for 4 MDCT equipment, conversion factors of liver, colon, bladder, gonads are 1.00, 0.51, 0.46 and 0.96, for 16 MDCT and also 64 MDCT, 0.86, 0.45, 0.40 and 0.84. For using 120 kVp, 4 MDCT get 1.22, 0.61, 0.40, 0.92, 16 MDCT and 64 MDCT get 1.24, 0.65, 0.46, and 1.03 as the same. • Abdomen-pelvis exam by S company 80 kVp: for 4 MDCT equipment, conversion factors of liver, colon, bladder, gonads are 1.21, 0.64, 0.44 and 1.04, for 16 MDCT, 1.19, 0.63, 0.43 and 1.02, for 64 MDCT, 1.36, 0.73, 0.52 and 1.14. For using 120 kVp, 4 MDCT get 1.24, o.67, o.46, 1.04, 16 MDCT get 1.24, 0.66, 0.45, 1.04 and 64 MDCT get 1.35, 0.73, 0.51, and 1.16. IV. Conclusions We consider that to calculate organ dose easily wing conversation factor through this study and CTDIvol presented on. equipment consol when doing CT exam without special dose measurement machines.

항만 컨테이너터미널에서의 6시그마경영 도입에 관한 연구

김광필 ( Kwang Pil Kim ),김채수 ( Chae Soo Kim ) 대한설비관리학회 2010 대한설비관리학회지 Vol.15 No.1

Six-Sigma has been the most influential management innovation program since Motorola first invented in 1987 and its application has extended to non-manufacturing processes such as transactional process and R&D process. Some container terminals in Korea, they try to introduce and implement Six-Sigma projects to improve the efficiency of terminal operation. There are some differences in Six-Sigma implementation between manufacturing process and non-manufacturing process. In this paper, we propose an implementation procedure and framework for Six-Sigma project, which are suitable for container terminal in harbor. This paper also presents priority in Six-Sigma topics for container terminal, that is confirmed from a BB(black-belt) workshop outcome. We testified the efficiency of the proposed implementation procedure through an empirical case study for Six-Sigma projects in a container terminal.

다구찌법을 이용한 컨테이너화물 안전수송장치 ConTracer의 성능향상에 관한 연구

최형림(Hyung Rim Choi),김재중(Jae Joong Kim),강무홍(Moo Hong Kang),손정락(Rock Jung Shon),신중조(Joong Jo Shin),이호인(He-in Lee),김광필(Gwang Pil Kim),김채수(Chae Soo Kim) 한국산업정보학회 2009 한국산업정보학회논문지 Vol.14 No.2

미국에서 발생한 9.11 테러 이후 물류보안(Supply Chain Security)에 대한 패러다임이 발생하였으며, 국외의 관련 기업과 기관들은 물류보안을 위하여 다양한 연구들을 진행하였다. 하지만 국내의 경우 물류보안이라는 용어 자체가 생소할 뿐만 아니라 보안에 관한 패러다임이 물류부분까지 확산되지가 않아서 관련 연구가 부족한 실정이었으나, 최근에 물류보안 기술 중의 하나로서 RFID 기반 컨테이너 화불 안전수송 장비인 ConTracer(Container Tracer)를 개발하는 등 관련 연구가 활성화되기 시작하였다. 현재 개발되고 있는 컨테이너 화물 안전수송 장비들의 주요 이슈는 높은 인식률과 충분한 인식거리가 확보되는 것이며, 본 연구에서는 이러한 목적을 달성하기 위하여 다구찌 방법론을 활용하여 ConTracer(433㎒ 타입, 2.4㎓ 타입)의 인식률 향상을 위한 다양한 실험을 하였다. 실험결과 433㎒ 주파수에서는 리더기의 방향을 전방우측으로 향하는 것이 다소 유리하고, 2.4㎓ 주파수에서는 크게 영향을 미치지는 못하는 것으로 나타났으며, 안테나의 위치는 예상했던 대로 두 주파수 모두 외부에 설치하는 것이 인식률 향상에 유리한 것으로 분석되었다. Since 9.11 terrorist attacks against the USA, the new paradigm for “supply chain security” has been established. And at the same time a lot of researches are being made on supply chain security by many foreign companies or research institutes. However, domestically the terms “supply chain security” themselves are not yet familiar, and the paradigm of security are not being used in the logistics, while little researches are being made on them. But recently along with development of “ConTracer,” a supply chain security technology, which is to be used as the equipment for container cargo transportation safety based on RFID technology, related researches have begun to be activated. The key issues for the development of equipment for container transportation safety are to obtain both a high recognition rate and enough recognition distance. To this end, this study has tested the ConTracer (433 ㎒ type and 2.4 ㎓ type) by using Taguchi Method. According to our test results, in the case of 433 ㎒ type, it is a little more effective that the reader faces to the front-right side, and in the case of 2.4 ㎓, reader direction does not make difference in the view of sensitivity. The test also has proved that it is better that antenna location, as expected, is to be installed on the outside for both types alike.

Managing quality attributes using customer satisfaction coefficient

송해근,김광필,Song, Hae-geun,Kim, Gwang-pil Korea Safety ManagementScience 2017 대한안전경영과학회지 Vol.4 No.3

The two-way quality theory has been widely used as a method for classifying quality attributes for several decades. In particular, the Kano model that classifies attributes into not just conventional one-dimensional but must-be and attractive has gained popularity due to its applicability and ease of use. However, the wordings of the five alternatives in the Kano's questionnaire has been criticised for unclear meanings. This study proposes a new two-way model to classify attributes using 5-point Likert scale alternatives. For this, the current paper investigated a case of TV sets to examine how the proposed model works in comparison with the Kano model. The application results of the proposed model are different from the original one. The two-way model classifies quality attributes in more detail such as the "one-dimensional with an attractive tendency" attribute, which has a greater influence on satisfaction than dissatisfaction, the opposite "one-dimensional with a must-be tendency" attribute, and "highly one-dimensional" and "less one-dimensional" attributes. In this study, a potential satisfaction coefficient (PSC), a potential dissatisfaction coefficient (PDC), and an average potential coefficient (APC) to manage quality attributes are proposed and discussed for their utilization.

갠트리 타입 SMD에서 동시 흡착에 의한 효율적 PCB 조립 방안의 시뮬레이션 연구

문기주,김광필,Moon, Gee-Ju,Kim, Gwang-Pil 한국시뮬레이션학회 2006 한국시뮬레이션학회 논문지 Vol.15 No.4

본 연구에서는 갠트리타입 기종을 사용한 PCB 조립 생산시 생산시스템의 수행도 향상을 위한 방안을 개발하여 제시한다. 갠트리타입의 기종에서는 헤더나 슬롯의 이동보다는 노즐의 교체가 시스템의 수행도 향상에 주된 걸림돌이 되므로 동시흡착을 최대화할 수 있는 방안을 모색하였다. 본 연구에서 제시된 해법은 피더의 위치와 노즐의 위치를 감안하여 동시흡착을 수행하도록 함으로써 노즐 교체를 최소화하고, 기판당 조립시간의 감소도 이루어지도록 하였다. 제안 해법의 유효성을 입증하기 위해 시뮬레이션 모형을 구축하고 부품의 수를 변화시켜가면서 다음 작업대상피더와 교체노즐의 선정을 다양하게 하여 여러 운영방안들의 수행도와 비교 분석하였다. 시뮬레이션 결과, 동시흡착을 유도하는 노즐교체를 할 경우 전반적인 수행상태가 양호한 것으로 나타났다. An efficient PCB assembly method with Gantry type machine is developed and proposed in this paper to improve system productivity. Nozzle changes at Gantry type machine is the major reason causing lower system performance instead of header and slot movements on the other type machines. The problem is attacked by maximizing multiple adsorptions to reduce the number of necessary nozzle changes with Gantry type machine. It is designed to reduce the assembly time per PCB with multiple adsorptions based upon the positions of feeders and nozzles. A simulation model is constructed to show the effectiveness of the suggested heuristic and necessarily a comparison study is followed with different methods on selection of next assembly feeder and nozzle with various cases.

구조화된 접근법을 이용한 창의적 발상에 관한 연구- SIT와 BS의 결과비교를 중심으로

정원일(Chung, Won-il),김광필(Kim, Kwang-Pil),송해근(SONG HAEGEUN) 한국공학교육학회 2019 공학교육연구 Vol.22 No.4

The purpose of this study is to introduce a modified CPS(Creativity Problem Solving) procedure as a new method for comparative analysis of creative techniques such as SIT(Systematic Inventive Thinking) and Brainstorming(BS) techniques. For this, a new sports game is employed as a case study. The results show that the ideas from SIT are more creative in terms of originality and practicality than those of BS. Several considerations for effective practical use of the proposed method are discussed in this study.

증식성 담관염 흰쥐 모델에서 Paclitaxel 도포 나일론 스텐트의 효과

최재운(Jae-Woon Choi),김광필(Guang-Bi Jin),이동규(Dong Gyu Lee),이상전(Sang Jeon Lee),장이찬(Lee-Chan Jang),성노현(Rohyun Sung),김동운(Dong-Woon Kim),박선미(Seon-Mee Park) 한국간담췌외과학회 2003 한국간담췌외과학회지 Vol.7 No.1

불안정한 설비중심공정의 Cycle Time 설정 연구

김광필,문기주 東亞大學校附設 生産技術硏究所 2007 生産技術硏究所硏究論文集 Vol.12 No.-

A possible approach to calculate and determine a cycle time for unstable facility based steelmaking process. Necessary analysis are done by measuring and analysing the process in detail to calculate standard time and process improvements. Between 4 and 8% of productivity improvements are expected to make based upon the collected manufacturing data.