전문가 시스템기법에 의한 기계 가공 조립 공장의 최적 배치방법 연구

문기주,오현승 東亞大學校 附設 情報通信硏究所 1994 情報通信硏究所論文誌 Vol.2 No.1

설비배치는 공장의 신설이나 설비의 추가 도입시에 주로 필요로 하는 것으로써 빈번하게 발생하지 않는다는 점과 배치안 개발을 위해 만들어져 있는 기존의 방법들이 너무 이론적인 측면으로만 치우쳐 있기 때문에 현실 적용이 원활하지 아니하여 큰 주목을 받지 못한 분야였다. 그러나 근래의 생산형태가 다품종소량화 됨에 따라 차량부품의 생산등과 같은 기계적인 가공 및 조립을 행하는 공장들은 빈번한 생산제품의 변경에 따른 생산설비의 재배치를 자주 필요로 하게 되자 그 관심도가 높아지고 있다. 본 논문에서는 이런 요구에 부응하여 기계적인 가공 및 조립을 행하는 공장에서 설비배치시에 고려하고자 하는 요소들에 대한 관리자들이 느끼는 중요도에 따라 교체 대상 부서를 선정하고 교체 순서를 결정하여 교체해 나감으로써 최적 배치안을 탐색할 수 있는 방법을 제시하였다.

인쇄회로기판 최적생산을 위한 부품그룹화와 랙배정 및 자삽순서의 결정

문기주,정현철 대한설비관리학회 2004 대한설비관리학회지 Vol.9 No.1

An efficient component slot assignment and placement method is presented in this paper. The method includes how to classify components into two different groups based on size and position information, how to assign them to slots on a component rack, and how to determine placement sequences on the board. In general, slot assignment and placement sequences are determined separately in previous researches found in the literature. In this research, closeness matrices are constructed by counting the number of component type within one and two unit moving distance to refer on slot assignment step. Several simulation models are developed using Visual C++ for performance evaluation of the suggested heuristic. Necessary statistical analyses are also followed to show the effectiveness of the heuristic.

PCB부품 자동삽입기의 효율적 삽입경로에 관한 연구

문기주,윤상섭,김상현 한국경영과학회 2000 한국경영과학회 학술대회논문집 Vol.- No.2

For miniaturization of electronic parts and higher productivity, part arrangement job of PCB(printed Circuit Board) has been replaced with complete automated facilities, and contribution which is concerned about this will be expanded continuously. Such part arrangement job of PCB could have lots of influences to entire productivity. In this paper, effective grouping method of parts is suggested for the effective insertion path job of PCB concerning the constraints to the size of parts.

Poster Session:PS 1179 ; Cardiology : The Impact of Colchicine Use on Prevalence of Myocardial Infarction in Patients with Gout

( Hyun Gee Moon ),( Sun Ho Hwang ),( Chung Kang ),( Dong In Nam ),( Il Hyung Jung ),( Bo Ram Youn ),( Sang Cheol Cho ),( Won Yu Kang ),( Wan Kim ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Gout patients have an increased risk of myocardial infarction (MI). Since atherosclerosis and plaque rupture are infiammatory processes, anti-infiammatory gout medications might also reduce MI. Colchicine is an antiinfi ammatory agent that affects macrophages, neutrophils, and endothelial cells, all of which are implicated in the pathogenesis of cardiovascular disease. Some prior study suggests that colchicine might reduce MI in gout patients. We examined whether colchicine use was associated with a reduced risk of MI in patients with gout. Methods: We conducted a retrospective study of all patients with an International Classifi cation of Diseases, 9th ed, code for gout in the electronic medical record (EMR) of Gwangju Veterans Hospital Between January 2005 and 2012 December. Data were used to identify patients who had fi lled at least 1 colchicine prescription (n=99) versus those who had not (n=97). The primary outcome was MI during the study period. Secondary outcomes included all-cause mortality and C-reactive protein (CRP) level Results: Total 196 patients were enrolled. MI has a trends toward lower prevalence in colchcine group (2. 02% vs 7. 22%, p=0. 757). Two groups had no signifi cant difference in all cause mortality (Colchicine vs No colchicines ; 2. 02% vs 6. 02%, p=0. 1421) and in C-reactive protein level (Colchicine vs No colchicines ; 11. 14 mg/dl vs 12. 51mg/dl, p=0. 772). Conclusions: In this hypothesis-generating study active colchicine users demonstrated trends toward a reduced incidence of MI in the fi rst 2 years of observation vs controls. But all-cause-mortality and CRP does not show a meaningful result. Overall, additional studies are needed to clarify the potential cardioprotective effect of colchicine.

Poster Session:PS 1215 ; Cardiology : Everolimus- Eluting Stent is Superior to Zotarolimus- Eluting Stent in Myocardial Infarction Patients with Severe Periprocedural Infl ammation

( Hyun Gee Moon ),( Sang Cheol Cho ),( Kyung Hwan Kim ),( Wan Kim ),( Bo Ram Youn ),( Won Yu Kang ),( Sun Ho Hwang ),( Weon Kim ),( Myung Ho Jeoung ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: There were several studies that compared the efficacy of Everolimus- eluting stent(EES) and Zotarolimus-eluting stent(ZES). The clinical outcome was similar between these two stents. However, the impact of peri-procedual infi ammation on effi cacy of these stents were not evaluated. Methods: From KAMIR data, 8401 acute myocardial infarction(AMI) patients were enrolled and 5050 patients with hs-CRP under 3mg/dL and 1646 patients with hs- CRP over 3mg/dL were analyzed after propensity score matching. The primary end point was defi ned as composite of all-cause death, recurrence of non-fatal myocardial infaction(MI) and target-lesion revascularization. The secondary end points were cardiac death, recurrence of MI, and target lesion revascularization respectively. For AMI patients with low hs-CRP and high hs-CRP, the clinical outcome were compared between EES group and ZES group respectively. Results: For AMI patients with low hs-CRP level (<3mg/dL), the cumulative incidence of major adverse cardiac events(MACE) were similar between two groups (p=0. 195). However, when the level of hs-CRP over 3mg/dL, EES revealed better outcome than ZES (p=0. 015). For adjusting compounding variables, Cox-regression multivariate analysis was performed and the use of EES rather than ZES had signifi cant impact on improving clinical outcome (p=0. 029). However, the difference of cumulative incidence of respective cardiac outcome such as cardiac death (p=0. 053), non-fatal MI(p=0. 781) and targen-lesion revascularization (p=0. 155) was not signifi cant. Conclusions: EES was superior to ZES, when the peri-procedual infiammation was severe in acute myocardialinfarction patients. The level of hs-CRP can be a guidance to select appropriate drug-eluting stent in AMI patients.

Intravenous Thrombolysis in a Patient With Acute Ischemic Stroke Attributable to Intracranial Dissection :

Moon, Yeonsil,Lee, Joon Hwa,Cho, Hyun-Ji,Roh, Hong Gee,Choi, Jin Woo,Chun, Young Il,Kim, Hahn Young Ovid Technologies (Wolters Kluwer) - Lippincott Wi 2012 The Neurologist Vol.18 No.3

Physico-Chemical and Rheological Properties of a Bioflocculant BF-56 from Bacillus sp.A56

( Hyun Hyo Suh ),( Seong Hoon Moon ),( Weon Taek Seo ),( Hyung Kab Kim ),( Gee Ill Jeon ),( Hyun Geoun Park ),( Yong Il Park ) 한국미생물 · 생명공학회 2002 Journal of microbiology and biotechnology Vol.12 No.2

Bacillus sp. A56 was studied, because of its high flocculating activity. The flocculating substance produced by this strain was purified by ethanol precipitation, cetylpyridinium chloride (CPC) precipitation, and gel permeation chromatography (GPC). The FT-IR spectrum of the purified bioflocculant, designated as BF-56, showed typical characteristics of polysaccharides. The non-sugar substituents, and sugar components of BF-56 containing glucose, fucose, glucuronic acid, and galactose in an approximate molar ratio of 2.76:1.10:1:0.12, suggested that it was a novel bioflocculant with an estimated molecular mass of over 7×10(3) kDa. Rheological analysis of BF-56 revealed that it was a pseudoplastic that had higher apparent viscosity rate at dilute concentrations than those of zooglan. The solution of bioflocculant BF-56 exhibited non-Newtonian characteristics and it was compatible to high concentrations of salts such as KCl, NaCl, CaCl2, or FeCl3. The present results suggested strong possibility of bioflocculant BF-56 to be fully applicable to industries such as wastewater treatment.

그룹화에 의한 효율적 부품자삽 순서의 결정에 관한 연구

문기주,김상현,홍성일 대한설비관리학회 2002 대한설비관리학회지 Vol.7 No.1

In this paper, a grouping method of parts is suggested for the sequencing of insertion in PCB concerning the size of parts as a constraint. In reality, part placement process is restricted by the size of parts, and the order is arranged after parts grouping. However, it has been performed without this constraint in earlier studies. In this paper, parts are classified into two groups, namely, fixed group and arbitrary group, and parts in arbitrary group are arranged into fixed group based on the necessary moving distance. And then tried to reduce processing time for part insertion. Numerical examples are used to show the performance of the suggested part grouping method. Length and processing time of the initial path are compared with the obtained final solution. The performance of grouping method is better than the existing methods.

S-17 Is Endoscopic Passage an Important Prognostic Factor in Locally Advanced Esophageal SqCC?

( Gee Young Yun ),( Hee Seok Moon ),( Sun Hyoung Kang ),( Jae Kyu Sung ),( Hyun Yong Jeong ) 대한내과학회 2016 대한내과학회 추계학술대회 Vol.2016 No.1

Introduction: Surgery and concurrent chemoradiotherapy (CCRT) are widely accepted alternatives for the curative treatment of patients with early stage or locally advanced esophageal cancer. Impossible endoscopic passage due to resistance is intermittently experienced in esophageal cancer patients. The objective of this study was to evaluate the prognostic influence of endoscopic passage in early stage or locally advanced esophageal squamous cell carcinoma (SqCC) patients treated with surgery or CCRT. Aims & Methods: This retrospective case-control study was based on medical records from a single tertiary medical center located in Daejeon, Republic of Korea. The records of 317 patients with esophageal SqCC treated with surgery or CCRT between January 2009 and December 2015 were reviewed, and 160 patients were ultimately selected. These 160 patients were divided into two groups based on their endoscopic passage findings: group A (possible endoscopic passage group), and group B (impossible endoscopic passage group, including patients requiring a pediatric endoscope for passage due to resistance). We then compared the clinical and endoscopic characteristics of these two groups retrospectively. Results: Of the 160 enrolled patients, 92 (57.5%) patients were assigned to group A and 68 (42.5%) to group B. Early stage esophageal SqCC (stage I, II) was significantly more prevalent in group A than in group B patients (p<0.05), and endoscopic stents were less frequently required in group A than in group B patients (p<0.05). Overall survival was better in group A than in group B patients (85.5% vs 41.4%, p<0.05). Progression-free survival was better in group A than in group B patients (52.3% vs 20.7%, p<0.05). In Subgroup analysis, similar results came out, even if only patients who underwent CCRT (n=92) have analyzed. Of the 92 enrolled patients, 58 (63%) patients were assigned to group A and 34 (37%) to group B. Conclusions: Our data suggest that endoscopic passage was an important prognostic factor in terms of overall survival and progression-free survival in patients with early stage or locally advanced esophageal SqCC treated with surgery or CCRT.

A Comparison of Technological Growth Models

( Hyun Seung Oh,Gee Ju Moon ) 한국품질경영학회 1994 품질경영학회지 Vol.22 No.2