• 대한전기학회논문지:시스템및제어부문D
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• 제55권5호
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• pp.229-235
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• 2006

High speed PC-based DIO(Digital I/O) system that consists of a master device and slave I/O devices is developed. The PCI interfaced master device controls all of serial communications, reducing the load on the CPU to a minimum. The slave device is connected from the master device and another slave device is connected to the slave device, it can repeated to maximum 64 slave devices. The slave device has 3 types I/O mode, such as 16 bits input-only, 16 bits output-only, and 8bits input-output. The master device has 2 rings which can take 64 slaves each. Therefore, total I/O points covered by the master is 2048 points. The slave features 3 types of input/output function interchangeability by DIP switch settings. Library, application, and device driver software for the DIO system that have a secure and a convenient functionality are developed.

• 품질경영학회지
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• 제24권3호
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• pp.160-174
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• 1996

The paper reviews briefly of the codes above, together with the effects of the successful introduction of the QMS into the shipping industry. This paper suggests a conceptual prototype for a quality management system (QMS) of seafaring labour, which itself would be a sub-system of the total quality management (TQM) system in a shipping company, on the basis of the ISM and the ISMA Codes, ISO 9002, ISO 9004, and other quality management guidelines. The QMS is essential for the survival of the Korean shipping industry. It will contribute not only to assuring the quality of crew, but also, consequently, to increasing the international competitive edge of the shipping companies in Korea.

• 제어로봇시스템학회논문지
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• 제20권2호
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• pp.112-119
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• 2014

A force support system is composed of capital components such as combat equipments, supplies and so on to enable constant fighting power capability. Private technology level evaluation is on the rise as an important spin-on method in force support systems, which requires 92% of total munitions requirements, to obtain superior private technology. The evaluation of the private sector technology level on Korean force support systems has been conducted for the first time as follows: this research chose 38 items to be acquired within 2-3 years and grouped either identical or similar technology among those 38 items. A technology evaluating method was established based on the analysis of domestic and foreign technology level evaluations. Evaluation was performed by a Delphi survey from 180 private and military experts. To obtain an objective index and raise political availability, a technology system map and standard document were developed and applied to all 38 items.

• 제어로봇시스템학회논문지
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• 제19권5호
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• pp.390-397
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• 2013

This paper presents a consensus algorithm for uMAS (uncertain Multi-Agent Systems). Unlike previous results in which only nominal models for agents are considered, it is assumed that the uncertain agent model belongs to a known polytope set. In the middle of deriving the proposed algorithm, a convex set is found which includes all uncertainties in the problem using convexity of the polytope set. This set plays an important role in designing the consensus algorithm for uMAS. Based on the set, a consensus condition for uMAS is proposed and the corresponding consensus design problem is solved using LMI (Linear Matrix Inequality). Simulation result shows that the proposed consensus algorithm successfully leads to consensus of the state of uMAS.

• 한국전문물리치료학회지
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• 제6권2호
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• pp.43-55
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• 1999

In today's society, many women wear high-heeled shoes, but the effect of heel height on lumbar lordosis has not been clearly defined. The objective of this study was to identify the influence of heel height and general characteristics of subjects on lumbar lordosis. The subjects of this study were 40 healthy women who were students of the Department of Physical Therapy, College of Rehabilitation Science, Taegu University. Flexible ruler measurement was used to measure the lumbar lordosis at barefoot, 3 cm and 7 cm high-heeled standing positions. The results were as follows: 1) Significant statistical decrease in lumbar lordosis was observed as heel heights were increased from barefoot to 7 cm high heel. 2) There were no statistically significant differences between lumbar lordosis according to three different heel heights and weight, body mass index. 3) Lumbar lordosis measured at different heel heights was related to subject's height. With increasing subject's height, lumbar lordosis that measured from each heel height was significantly decreased. As heel heights were increased from barefoot to 7 cm high heel, significant statistical decrease in lumbar lordosis was observed in the subjects whose height were 151~160 cm. 4) Intrarater reliability on lumbar lordosis taken with a flexible ruler was good, with Cronbach ${\alpha}$ values of 0.8971 for barefoot, 0.8107 for 3 cm and 0.9002 for 7 cm high-heeled standing positions.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
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• pp.1346-1353
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• 1993

Recently , it has been popular for family use to sell a watermelon by the piece such as a half or a quarter. Therefore, it has been necessary to detect and sort out hollow or overripened watermelons before they are shipped. Previously, inspection and rejection of hollow or overripened watermelons were carried out by skilled inspectors with their experience and intuition based on the traditional slapping method. In recent years many inspectors have became older and are going to retire. Thus automatic quality measuring devices have to be developed. There are many reports on the measurement of internal quality for watermelons with non-destructive methods. However, there is no online device to detect and measure both hollow and ripeness of watermelons until now. We have developed the model MWA-9002 online device to detect hollow and measuring the ripeness of watermelons by acoustic impulse. The developed of this devices has enables accurate distinction and rejection at the same level of the skilled inspectors, and also has saved labor. Nowadays nine automatic watermelon sorting and packing facilities applied this device have installed in Japan.

• 안전기술
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• 제181호
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• pp.24-26
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• 2013

오랫동안 많은 이들에게 지속적인 사랑을 받아온 제품을 열거하기란 생각보다 쉽지 않다. 산업구조의 급변에 따라 일상생활에도 많은 변화가 찾아오기 때문이다. 각종 전자제품에서 '스마트'란 수식어가 붙은 것이 얼마 되지 않았다는 것이 대표적인 예라고 할 수 있다. 하지만 이런 중에도 소비자들이 꾸준하게 애용하는 제품이 있다. 도브, 럭스, 폰즈, 바세린, 립톤 등이 바로 그것이다. 이러한 제품을 생산 판매하는 기업이 오늘의 주인공인 유니레버코리아(주)다. 1985년 합작회사로 국내에 처음 진출한 유니레버코리아(주)는 1993년 도약의 기틀을 마련하게 된다. 세계적 수준의 생산설비를 갖춘 대전공장을 설립하게 된 것이다. 이후 이곳에서는 샴푸류, 비누류, 화장품을 비롯한 생활용품과 아이스티 식품류를 제조해 나가면서 한국시장 진출에 성공하게 된다. 그야말로 기업 성장의 선봉장 역할을 톡톡히 수행한 것이다. 그렇다면 무엇이 이런 힘을 이끌어 냈을까. 유니레버코리아(주) 대전공장 관계자들은 그 중심에 안전이 자리 잡고 있다고 강조한다. OHSAS 18001(안전보건경영시스템), ISO 14001(환경경영시스템), ISO 9002(품질경영시스템) 인증 취득을 통해 관리체계를 확고히 한 가운데 경영진들의 높은 안전의식을 바탕으로 빈틈없는 안전관리를 해나갔다는 것이다. 이를 통해 근로자의 안전을 확보하면서 소비자들에게 사랑받는 제품을 생산했다는 설명이다. 구체적으로 이곳 안전관리가 어떻게 펼쳐지고 있는지 찾아가 봤다.

• 한국산업보건학회지
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• 제20권1호
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• pp.63-69
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• 2010

This study was conducted to compare the concentration of various air contaminants in nine different laboratories during routine activities. Volatile organic compounds (VOC) were sampled and analyzed using NIOSH Method 1500 and asbestos fibers were sampled and analyzed using NIOSH Method 9002 and 7400. Detectable levels of acetone, toluene and ethanol were found in all the laboratories and xylene and n-hexane were detected in eight of the nine laboratories. All the VOC concentrations were well below the Korean Ministry of Labor's Exposure Limit and American Conference of Governmental Industrial Hygienists' (ACGIH) Threshold Limit Values (TLVs). Total VOC concentrations at the university laboratories were significantly higher than those at governmental agency laboratories. Airborne fiber concentrations were below 0.01 fibers/cc, while the concentration of chrysotile was 2% in insulation materials sprayed on the ceiling of one laboratory. While all the governmental agency laboratories (n=4) had fume hoods, two out of the five university laboratories did not have fume hoods. The capture velocity of half of the fume hoods were below the maintenance standard(0.4 m/sec). In conclusion, the study suggests that the current controls in place at both university and government agency laboratories are not sufficient in limiting exposure to harmful chemicals to non-detectable levels, though they appear to be adequate in protecting workers to levels below applicable occupational exposure limits. The study also suggests that researchers working in university laboratories may be exposed to greater levels of contaminant than those working in government agency laboratories.

• 자원리싸이클링
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• 제4권1호
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• pp.52-59
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• 1995

Co의 리싸이클링을 원활히 하기 위하여 괴상 superalloy 스크랩을 용융Zn으로 분해할 때의 최적처리조건을 조사하였다. 조사한 superalloy는 Co-기 Mar-M-509와 X-45 그리고 Ni-기 Rene 80이었다. Zn/스크랩 비율이 1.5~6.5인 장입물을 질소 분위기에서 $750~900^{\circ}C$에서 1~7.5시간 동안 가열하였다. 용융된 Zn은 스크랩을 용해하였고, Zn은 $850~900^{\circ}C$에서 4~6시간 동안 진공증류하여 제거되었다. Mar-M-509와 Rene 80의 최적 처리조건은 용해온도 약 $^850{\circ}C$, Zn/스크랩 비율 약 5, 그리고 용해시간 약 5.5시간이었다. Zn처리 superalloy 생성물은 쉽게 부스러졌으며, 산 용액에 의해 빠르게 침출되었다. Mar-M-509 또는 Rene 80의 경우, 미처리 스크랩(9mm 조각)을 화학양론양 5배의 6N HCl으로 $90^{\circ}C$에서 3시간 동안 처리하면 침출도는 약 1.5~7.2%에 지나지 않았으나, Zn처리 생성물(-20 메쉬의 것)의 침출도는 약 89.0~93.0%나 되었다.

• 간호행정학회지
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• 제1권2호
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• pp.325-337
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• 1995

This study attempted to increase quality of nursing care by assessing the nurses' attitudes for computerization in nursing practice and ensuring right recognition and attitude for computerized system. Study subjects are 311 nurses who are working at 4 general hospitals. Those hospitals are selected according to the degree of computerized in Kyoung In Province. Study instrument consists of 20 items and 12 general questionnaire which was developed by Brodt and Stronge(1985) and modified by Lee(1991). Data collection was done from april 19th in 1995 to april 29th. Data gathered were analized number, t-test, ANOVA by using SPSS. The study results are as follows : 1. Study subject's attitude for computer application showed positive response as mean score of 3.44 especially nurses who had experience using computer showed 100% pro-response. 2. Study subject's attitude by age was significant statistically(F=3.9589, p=.0038), among them age 25-30 revealed the highest positive scores, and age 40 showed the lowest positive scores. 3. Study subject's attitude by education level showed no significant difference(F=1.4182, 2437), and those who are more educated showed more positive response. 4. Study subject's attitude by duty years showed no significant difference(F=2.2648, p=.0622), and those who had 7- 9 duty years had the highest positive attitude however those who have 10 duty years showed lowest positive attitude. 5. Study subject's attitude by position revealed no significant difference(F=2.0017, p=.1369), and the charge nurse groups who were using computer showed the highest scores. 6. Study subject's attitude by computerized type showed significant difference(F=23.9665, p=.0000), and G hospital which had computer system in nursing area obtained the highest positive scores. 7. study subject's attitude by presence of computer education showed no significant differenec(F=.9002, P=.3435), and non computer educated groups showed the highest positive response. 8. Study subject's attitude by computer education place revealed no significant difference(F=4.3723, p=.0020). and the groups who were taught individually or in the institution obtained the highest positive scores. 9. Study subject's attitude by duty year computer use showed no significant response(F=.9591, P=.3282), and groups of computer use showed the high degree of positive response. 10. Study subject's attitude by duty year using computer showed significant difference(F=5.9174, p=.0009),and the groups using computer for 6 years or group of 4-6 years showed the highest degree of positive response and the groups using computer for 1 year showed the lowest degree of positive response.