• 제목/요약/키워드: CIM

검색결과 408건 처리시간 0.025초

MOS-EMS 연계 데이터 흐름 (Data flow for MOS-EMS system interoperation)

  • 이강재;박문철;이건웅;김성학
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 제37회 하계학술대회 논문집 D
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    • pp.2134-2135
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    • 2006
  • 전력거래소는 발전경쟁시장(CBP; Cost-Based Pool) 장기화에 따른 운영상의 효율성을 개선하고 기 개발된 시장운영시스템(MOS; Market Operation System)을 활용하여 급전체계를 개선하기 위해 준비중이다. 현행 급전체계에서는 거래 전일에 수행한 수요예측을 바탕으로 1시간 단위운영발전계획을 전일에 수립하고 EMS(Energy Management System)를 이용하여 발전기에 대한 경제부하배분(ED; Economic Dispatch)을 시행하고 있지만, 현 EMS는 시장체제 환경 전에 도입된 설비로 시장환경에 대한 고려가 되어 있지 않고 계통운영 보조서비스의 실시간 반영이 어려운 점이 있다. 전력거래소는 실시간 급전 운영을 위해 기존 EMS에 MOS를 연계하여 MOS의 5분 단위 수요예측량을 기반으로 송전망 제약과 예비력 요구량 등을 고려한 발전기별 경제부하 배분량 및 예비력 배분량을 결정하고, 추가적으로 EMS에서 수요예측 오차 및 주파수 보정량을 실시간으로 계산하여 발전기별로 배분하도록 함으로써, 1일 전 시행하던 급전계획을 취득 자료를 기반으로 5분 단위로 실시간 계산할 수 있도록 급전 체계를 개선할 계획이다. 이를 통해 실시간으로 에너지와 예비력을 동시에 최적화함으로 전력시장 및 전력계통 운영을 한층 선진화 할 수 있는 계기를 마련하였으며 또한 저비용 발전기 사용을 극대화함으로 발전비용의 절감에도 기여하는 효과를 기대할 수 있다. MOS-EMS간 자료연계에는 ICCP(Inter-Control Communication Protocol)와 FTP 프로토콜을 사용하였고, 수차례 모의운영을 통하여 데이터베이스 및 현장 취득 자료의 정확도(accuracy)가 양 시스템 간 연계 및 전력 계통의 안정적 운영에 매우 중요한 요소로 나타났다. 전력거래소는 장기적으로 CIM(Common Information Model)기반의 표준 전력계통 데이터베이스를 구축하고 시스템 간 자료 연계를 위해 XML을 활용하여 시스템 간 상호 운영성(Interoperability)과 자료 연계의 안정성을 높일 계획이다. 본 논문은 MOS-EMS 연계에 따른 시스템 간 자료의 흐름 및 처리에 대해 주로 설명하고자 한다.

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Knowledge- Evolutionary Intelligent Machine-Tools - Part 1 : Design of Dialogue Agent based on Standard Platform

  • Kim, Dong-Hoon;Song, Jun-Yeob
    • Journal of Mechanical Science and Technology
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    • 제20권11호
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    • pp.1863-1872
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    • 2006
  • In FMS (Flexible Manufacturing System) and CIM (Computer Integrated Manufacturing), machine-tools have been the target of integration in the last three decades. The conventional concept of integration is being changed into the autonomous manufacturing device based on the knowledge evolution by applying advanced information technology in which an open architecture controller, high-speed network and internet technology are included. In the advanced environment, the machine-tools is not the target of integration anymore, but has been the key subject of cooperation. In the near future, machine-tools will be more improved in the form of a knowledge-evolutionary intelligent device. The final goal of this study is to develop an intelligent machine having knowledge-evolution capability and a management system based on internet operability. The knowledge-evolutionary intelligent machine-tools is expected to gather knowledge autonomically, by producing knowledge, understanding knowledge, reasoning knowledge, making a new decision, dialoguing with other machines, etc. The concept of the knowledge-evolutionary intelligent machine is originated from the machine control being operated by human experts' sense, dialogue and decision. The structure of knowledge evolution in M2M (Machine to Machine) and the scheme for a dialogue agent among agent-based modules such as a sensory agent, a dialogue agent and an expert system (decision support agent) are presented in this paper, with intent to develop the knowledge-evolutionary machine-tools. The dialogue agent functions as an interface for inter-machine cooperation. To design the dialogue agent module in an M2M environment, FIPA (Foundation of Intelligent Physical Agent) standard platform and the ping agent based on FIPA are analyzed in this study. In addition, the dialogue agent is designed and applied to recommend cutting conditions and thermal error compensation in a tapping machine. The knowledge-evolutionary machine-tools are expected easily implemented on the basis of this study and shows a good assistance to sensory and decision support agents.

자동차 ALC에 대응하는 Job Shop의 동기화 생산시스템에 관한 연구

  • 권보식;김경섭
    • 한국시뮬레이션학회:학술대회논문집
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    • 한국시뮬레이션학회 1997년도 춘계 학술대회 발표집
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    • pp.100-100
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    • 1997
  • 본 연구에서는 우리 자동차산업이 직면한 총체적인 위기상황을 극복하기 위한 방 안으로, 자동차 생산방식의 변혁, 인적자원관리의 혁신을 통한 생산성 제고, 독자 기술개발 능력의 조기확보, 효율적인 부품조달체제의 형성 등 산업전반에 걸친 혁신으로, 내적인 경 쟁력을 축적함과 동시에, 지역주의화의 진전에 따른 수출 여건의 악화를 극복하기 위해 선 진권 및 개발도상국으로의 현지화 노력이 적극적으로 추진되지 않으면 안될, 중대한 시점에 와 있다고 진단하면서, 본 연구의 목적을, 생산현장을 중심으로 한 내적 경쟁력 확보로 정 의하고, 그 실현방안으로서, 급변하는 시장환경에 적극 대응하기 위한 생산방식의 도입과, 이를 지원하는 생산정보시스템의 구축 모델을 제시하고자 한다. 첫 번째는, 변화가 급격한 시장환경에 적극 대응하는 생산방식의 도입으로, 철저한 낭비 배제 사상 - 생산현장의 낭비 소요를 배제(개선)하는 것만이 아니라 배제하고 바로 체계를 바꾸어 (개혁) 원래의 상태로 되돌아가지 않도록 하는 -을 기본으로, 정보, 관리, 생산, 제품, 물류 등에 관련된 손실 비 용을 감축시킴으로서 원가를 낮추고, 고객이 요구하는 다양하고, 좋은 품질이 제품을 신속 히 공급할 수 있는 체계를 갖추는 것이다. 이러한 낭비 배제 사상은 생산현장에서 필요한 것을, 필요한 때에, 필요한 만큼 만들고 운반하며 전달하는 관리 개선 등을 의미하며, 이것 을 적은 인원 및 설비로 최대한 빨리 (리드 타임의 단축), 계획대로 수행하도록 하는 것이 동기화 생산방식이다. 따라서, 본 연구에서는 자동차 생산공정 중 주 조립공정의 ALC(Assembly Line Control)에 대응하여, 선행 공정으로서 부품을 공급하는 Job Shop의 동기화 생산방식을 실제 적용한 사례 중심으로 전개하고자 한다. 두 번째의 접근방식은, 동 기화 생산방식에 컴퓨터 통합생산 (CIM, Computer Integrated Manufacturing)의 기술을 구 현, 적용하는 것이다. 즉, 동기화 생산 시스템 (SPS, Syncronized Production Sytem)을 구 축하는 것인데, 이것은 최신의 컴퓨터 기술을 생산현장에 적용함으로써 새로운 생산방식의 혁신에 버금가는 기술혁신이라 할 수 있을 것이다. 따라서, 이러한 접근은 컴퓨터 및 통신 기술의 눈부신 발전을 기초로 가능해진 것인데, 제조업에서의 심각한 고비용, 저효율 문제 를 해결하기 위해 필수적으로 도입해야만 하는 실정이다. 또한 소비자의 다양한 요구로 인 하여 제품의 종류와 사양면에서 심한 변동을 보이는 시장 수요에, 신속한 정보처리로 대응 하는데도 크게 기여하고 있다. 이에 본 연구에서는, 자동차 Job Shop의 동기화 생산방식을 지원하는 동기화 생산시스템의 구축 모델을 제시하고자 한다.

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Combination of Vitamin C and Rutin on Neuropathy and Lung Damage of Diabetes Mellitus Rats

  • Sohn, Uy-Dong;Je, Hyun-Dong;Shin, Chang-Yell;Park, Sun-Young;Yim, Sung-Hyuk;Kum, Chan;Huh, In-Hoi;Kim, Jin -Hak
    • Archives of Pharmacal Research
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    • 제25권2호
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    • pp.184-191
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    • 2002
  • We investigated the role of vitamin C or rutin on neuropathy and lung damage of diabetic mellitus(DM) rats. Norepinephrine content was significantly decreased in sciatic nerves of DM rats compared with non-DM controls but vitamin C had no effect on decreases of norepinephrine. 2,4-dinitrophenylhydrazine (DNPH) incorporation, which is biomarker of protein oxidation, was increased in sciatic nerve of DM rats as compared with normal control. However, vitamin C had no effects on increases of DNPH incorporation . We measured the content of conjugated dienes (CD) as a biomarker of lipid oxidation in sciatic nerve. CD was increased in DM as compared with normal control, Vitamin C or rutin had no effects on increases of CD. However, Rutin plus vitamin C significantly decreased the content of CD as compared with CIM rats. In lung of DM rats, DNPH incorporation or CD was increased as compared with normal control. Vitamin C or Rutin had no effects on increases of CD However, Rutin plus vitamin C significantly decreased the content of DNPH incorporation or CD in lung tissue. Vitamin C caused marked pathological changes such as the increases of parenchyma and the thickening of alveolar septa in the lung of DM. Rutin had protective effects on the pathological changes in the lung of DM rats. In conclusion, Vitamin C had no effects on oxidative parameter, such as DNPH incorporation or CD, and on the decreases of norepinephrine content in DM rats. Vitamin C caused the marked pathological changes in the lung of DM rats but rutin had protective efforts against the pathological changes.

"침구경험방(鍼灸經驗方)" 침중완혈수법(鍼中脘穴手法) 연구 (The Study on Needling Insertion Method at CV12 in Cim-gu-kyung-heom-bang(鍼灸經驗方))

  • 오준호;안상우
    • Korean Journal of Acupuncture
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    • 제27권2호
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    • pp.35-47
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    • 2010
  • Objectives : Chim-Gu-Kyung-Heom-Bang(CGKHB; 鍼灸經驗方) is the needle and moxa specialized document written by the doctor specialized in needle and moxa treatment of Joseon(朝鮮), Heo Im(1570-1647). The document was published in April 1644(22nd year of King Injo). CGKHB contains the needle and moxa treatment techniques accumulated by the Joseon Dynasty as well as the personal experience of Heo Im. The aim of this study is to restore the past treatment method as a method of Needle Insertion Method at CV12(NIM-CV12, needle to penetrate blood vessel technique) in CGKHB.. Methods : Through Dong-Yi-Bao-Gam(DYBG; 東醫寶鑑), the implication of Korean medicine study of the Jungwan(CV12) has been studied. Next is the contemplation of the NIM-CV12 of CGKHB with the Acupuncture Treatment Using Jungwan(中脘鍼法) of Park Tae-won and Acupuncture Treatment for Byeokjeok(癖積鍼法) of "Geup Yubang". Results and Conclusions : 1. CV12 is one of the acupuncture points representing stomach(脾胃), middle energizer(中焦), phlegm-fluid retention(痰飮) and greater yin(太陰). 2. NIM-CV12 of CGKHB is the technique to penetrate the needle into the CV12 strictly relying on tactile sense of a person who give the penetration. This CV12 administration was carried out at intervals of every 7 or 8 day. During the administration period, the patient was not allowed to intake excessive amount of food. 3. The Acupuncture Treatment Using Jungwan(中脘鍼法) of Park Tae-won and Acupuncture Treatment for Byeokjeok(癖積鍼法) of "GeupYubang", existed in the same era of the NIM-CV12 of CGKHB, have similar linkage to the NIM-CV12 of Heo Im.

CAD/CAM 세라믹 인레이로 수복한 치아의 응력분포에 관한 유한요소법적 연구 (FINITE ELEMENT STRESS ANALYSIS OF A TOOTH RESTORED WITH CAD/CAM CERAMIC INLAY)

  • 송보경;엄정문
    • Restorative Dentistry and Endodontics
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    • 제26권6호
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    • pp.464-484
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    • 2001
  • When restoring a tooth, the dentist tries to choose the ideal material for existing situation. One criterion that is considered is its suitability for restoring coronal strength. As more tooth structure is removed, the cusps are weakened and susceptible to fracture. Further, this increased deformation may cause the formation of intermittent gaps at the margin between the hard tissue and the restoration, facilitating marginal leakage. The improvements in ceramic materials now make it possible for alternatives to amalgams, composites, and cast metal to be of offered for posterior teeth. Of the materials used, ceramics most closely approximates the properties of enamel. The introduction of computer-aided design/computer-aided manufacture(CAD/CAM) systems to restorative dentistry represents a major technological breakthrough. It is possible to design and fabricate ceramic restorations at a single appointment. Additionally, CAD/CAM systems eliminate certain errors and inaccuracies that are inherent to the indirect method and provide an esthetic restoration. The aim of this investigation was to study the loading characteristics of CAD/CAM ceramic inlay and to compare the stress distribution and displacement associated with different designs of cavity(the isthmus width and cavity depth). A human maxillary left first premolar was prepared with standard mesio-occlusal cavity preparation, as recommended by the manufacturer Ceramic inlay was fabricated with CEREC 2 CAD/CIM equipment and cemented into the prepared cavity. Three dimensional model was made by the serial photographic method. The cavity width was varied $\frac{1}{3}$, $\frac{1}{2}$ and $\frac{2}{3}$ of intercuspal distance between buccal and lingual cusp tip. The cavity depth was varied 1.5mm and 2.3mm. So six models were constructed to simulate six conditions. A point load of 500N was applied vertically onto the first node of the lingual slope from the buccal cusp tip. The stress distribution and displacement were solved using ANSYS finite element program(Swanson Analysis System). (omitted)

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한중시공에서 2중 버블시트 포설에 따른 단열 효과분석 및 무선센서 네트워크에 의한 초기 품질관리 (Insulation Effect of Double Layered Bubble Sheet Application in Cold Weather Concrete and Initial Quality Control by Wireless Sensor Network)

  • 한민철;서항구
    • 한국건축시공학회지
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    • 제21권1호
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    • pp.21-29
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    • 2021
  • 본 연구는 한중 환경에서 가열 보온양생을 실시한 벽식구조 아파트의 슬래브 상부 및 벽체를 대상으로 2중 버블시트 포설에 따른 온도이력 및 강도발현 특성을 저자 등에 의해 이전 연구에서 개발된 무선센서 네트워크인 Concrete IoT Management System(CIMS)를 이용하여 실시간 모니터링 및 추정하고자 하였다. 분석결과 버블시트의 단열성능에 기인하여 구조체 콘크리트의 온도가 높게 나타났다. 또한, CIMS의 경우는 콘크리트 내부온도를 30 m까지 양호하게 무선센서 네트워크로 스마트폰에 전송되어 적산온도 및 실시간 압축강도 측정으로 효율적인 초기 품질관리가 가능할 수 있음을 알 수 있었다. 초기 품질관리 결과로서 압축강도는 7일 이내에서 약 2 MPa 이내의 오차로 추정될 수 있음에 따라 버블시트의 단열효과까지 포함하여 실무에서는 거푸집 존치기간을 1사이클 당 1일 정도 단축하는 공정관리 측면에서 효과도 얻을 수 있었다.

주요우울장애에 대한 한약 단독치료의 효과와 안전성: 체계적 문헌고찰 및 메타분석 (Effectiveness and Safety of Traditional East Asian Herbal Medicine as Monotherapy for Major Depressive Disorder: A Systematic Review and Meta-Analysis)

  • 승혜빈;권희주;김상호
    • 동의신경정신과학회지
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    • 제33권1호
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    • pp.79-111
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    • 2022
  • Major depressive disorder (MDD) causes a persistent feeling of sadness and loss of interest. It can lead to emotional and physical problems. Treatments such as antidepressant and cognitive behavioral therapy for MDD have many limitations. Traditional East Asian Herbal Medicine (TEAM) is a representative modality of Complementary and Integrative Medicine (CIM) which can be used for MDD. However, no study has systematically reviewed the efficacy or safety of TEAM for MDD so far. Therefore, we performed a systematic review and meta-analysis to evaluate effectiveness and safety of TEAM as a monotherapy for MDD. We only included TEAM that could be used in context of clinical setting in Korean Medicine. Outcomes were the Hamilton Depression Rating Scale (HAMD) and total effective rate (TER). After comprehensive electronic search of 11 databases, we included 28 randomized controlled trials (RCTs) that compared HM as monotherapy with antidepressant for MDD. Meta-analysis showed that TEAM had significant benefits in reducing HAMD (MD=-0.40, 95% CI: -0.67 to -0.13, p=0.003, I2=85%) and improving TER (RR=1.06, 95% CI: 1.02 to 1.10, p=0.003, I2=0%). It also appeared to be safer than antidepressant in terms of adverse effects. Methods used for RCTs were poor and the quality of evidence was graded 'low' or 'moderate'. These findings indicate that the use of HM as a monotherapy might have potential benefits in MDD treatment as an alternative to antidepressant. However, considering the methodological quality of included RCTs, the clinical evidence is uncertain. Further well-designed RCTs are required to confirm these findings.

건축설계 지원을 위한 GIS 데이터 활용 시스템 (A system on using GIS data to support architectural design)

  • 김언용
    • 디자인융복합연구
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    • 제15권2호
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    • pp.169-184
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    • 2016
  • 건축설계 초기 단계에서 대상 대지에 대한 지리 공간 정보의 사용은 필수적이다. 하지만 현재까지 이러한 정보의 취득은 상당한 시간 및 노력이 요구되는 일이다. 본 연구는 이러한 GIS 정보의 효과적 취득을 위해 현재 국토교통부 주관으로 서비스 되고 있는 국가공간정보유통시스템인 Vworld의 정보를 건축설계에 이용하는 방법을 제시한다. 제시하는 방법은 Vworld 에서 제공하는 Open API를 이용하여 건축설계 초기단계에 필요한 지형 형상, 지적도 및 토지의 용도, 개발제한 사항 등을 BIM 설계용 소프트웨어에서 검색 및 즉시 활용 할 수 있는 BIM/GIS통합 방법이다. 이를 통해 BIM 분야에서는 GIS분야에서 구축한 도시설계관련 정보를 활용 할 수 있고, GIS는 건축분야에서 구축한 건물관련 정보를 이용함으로서 지리 및 공간정보를 풍성하게 구축 및 지속적인 유지관리가 가능하게 할 수 있다. 또한 본 연구를 통해 구축된 시스템은 BIM소프트웨어를 이용하여 설계하는 건축설계자들이 프로젝트관련 지리공간정보를 취득하는데 많은 시간과 노력을 절약할 수 있다는 사실을 확인할 수 있다.

고지방식에 혼합단백질과 L-카르니틴을 첨가했을 때 흰쥐의 지질대사에 미치는 영향 (Effects of Dietary Mixed Protein and L-Carnitine Supplementation on Lipid Metabolism in Rats fed High Fat Diet)

  • 원향례;김민선;이승교
    • 한국지역사회생활과학회지
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    • 제15권4호
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    • pp.89-96
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    • 2004
  • This study is to investigate the effect of dietary mixed protein and L-carnitine supplementation on lipid metabolism in the rats fed high fat diet. Six experimental groups were organized and each group had eight Sprague-Dawley male white rats with the initial weight of around 180g. The six experimental groups were CO(supplemented with casein), CC(supplementedwith casein and cartinine), ISO(supplemented with isolated soy protein), ISC(supplemented with isolated soy protein and cartinine), CIM(supplemented with casein and isolated soy protein), and CIC(supplemented with casein, isolated soy protein and cartinine). Each group was supplemented with the experimental diet for four weeks, and carnitine contained 3efo of the diet. The results were as follows; 1. There was no significant difference in food intake among the experimental groups. The weight increased more significantly in the group supplemented with the mixed protein than in the group supplemented with casein(p<0.05).2. There was weight reduction effect by the supplementation of carnitine(p<0.05), however no weight reduction effect by the supplementation of carnitine was observed in the group supplemented with the mixed protein and isolated soy protein. 3. Food efficiency was lower in the group supplemented with the mixed protein than in the group supplemented with casein (p<0.05), however it was similar in the group supplemented with isolated soy protein.4. Serum total lipid and se겨m total cholesterol were lower in the group supplemented with mixed protein than in the group supplemented with casein(p<0.05). 5. There was no significant difference of serum triglyceride, HDL-cholesterol, and LDL-cholesterol among the experimental groups. 6. Liver triglyceride was the highest in the group supplemented with mixed protein (p<0.05), and there was no significant difference of liver total lipid and total cholesterol among the experimental groups. 7. In the groups supplemented with mixed protein, the level of liver TBARS showed the lowest when casein was supplemented(p<0.05), and there was no significant difference of GSH-Px activities among the experimental groups. In summary, when mixed protein was supplemented to the rats weight gain and food efficiency were similar with those in the group supplemented with isolated soy protein, however they were lower than those in the group supplemented with casein. The effect of carnitine on weight was not observed in the group supplemented with mixed protein and isolated soy protein, however it was observed in the group supplemented with casein. Serum Total lipid and total cholesterol were lower than those in the group supplemented with casein. Liver total triglyceride was high in the group supplemented with mixed protein, and the antioxidant effect was observed in the group supplemented with mixed protein.

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