Development of an Integrated System of Marketing Solution and Supply Chain Optimization in Refinery Industry

박민환,김영,박선원 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.1

The adoption of Supply Chain Optimization techniques in refinery industry is groping at a tremendous speed. Marketing, simultaneously, continues to be a critical function. Supply chain management hasbeen regarded as a back-end function, but customer relationship management, an important factor of marketing, has been thought as a front-end. These two are implemented separately. An integrated approach to both customer relationship and supply chain management helps firms get advantages. Particularly, in refinery industry Marketing is related to oil transportation strongly. We suggest an effective strategy for companies to develop an integrated demand and supply chain. Acknowledgements This work was supported by the IMT 2000 (project number: 00015993) in 2003 and BK21 project.

고온 환경에서 방사선원의 식별 및 양적 분석을 위한 딥러닝 알고리즘

박민환,김찬호,박민혁,염정열 대한방사선방어학회 2023 대한방사선방어학회 학술발표회 논문요약집 Vol.2023 No.4

세균성 뇌수막염과 장바이러스 뇌수막염에 대한 세균성 뇌수막염 점수의 적용

박민환(Min hwan Park),김신재(Sin jae kim),염정숙(Jung Sook Yeom),박지숙(Ji Sook Park),박은실(Eun Sil Park),서지현(Ji Hyun Seo),임재영(Jae Young Lim),우향옥(Hyang Ok Woo),윤희상(Hee Shang Youn) 대한소아신경학회 2017 대한소아신경학회지 Vol.25 No.1

목적: 발열을 동반한 뇌척수액 백혈구증가증 환자를 치료하는데 있어 임상적으로 가장 중요한 것은 세균성 뇌수막염과 무균성 뇌수막염을 감별하는 것이지만 초기 증상 및 검사실 소견 만으로 두 질환을 감별하는 것은 쉽지 않다. 불필요한 항생제 사용 기간을 줄이기 위한 노력으로 최근 개발된 Bacterial Meningitis Score (BMS)는 여러 연구를 통해 세균성 뇌수막염의 가능성이 낮은 환자군을 초기에 감별할 수 있는 유용한 임상예측지표로 검증되어 왔다. 우리 연구는 뇌척수액에서 원인균이나 장바이러스가 동정된 뇌수막염 환자에 BMS를 후향적으로 적용하여 그 유용성을 분석하고 두 환자군의 초기 혈액학적, 임상적 특징을 비교하여 추가적인 임상 지표를 찾고자 하였다. 방법: 2010년 1월부터 2016년 7월까지 장바이러스성 뇌수막염이나 세균성 뇌수막염으로 진단된 2개월 이상에서 16세 미만의 입원 환자를 대상으로 후향적인 의무기록 분석을 시행하였다. 결과: 장바이러스성 뇌수막염 환자 289명, 세균성 뇌수막염 환자 10명이 분석에 포함되었다. 연구에 포함된 두 환자군의 BMS의 세균성 뇌수막염 예측에 대한 민감도는 80%, 특이도는 72%, 음성 예측도는 99.0%로 분석되었다. BMS에서 세균성 뇌수막염의 위험도가 매우 낮다고 분류된 환자 210명 중 2명(1%)이 세균성 뇌수막염 환자였으며 모두 3개월 미만의 영아였다. 세균성 뇌수막염 환자는 장바이러스 뇌수막염 환자에 나이가 어렸으며(0.3세 vs. 5.0세, P<0.01) 발열 기간이 길었다(6일 vs. 2일, P<0.01). 뇌척수액 내 백혈구 수(530/mm3, vs. 43/mm3, P=0.04) 및 절대중성구 수(490/mm3 vs. 20/mm3, P<0.01), 단백질 농도(106 mg/dL vs. 30 mg/dL, P<0.01) 및 혈장 C-반응단백농도(79 mg/L vs. 4.5 mg/L, P<0.01)가 세균성 뇌수막염 환자에서 증가된 소견을 보였다. 결론: BMS가 세균성 뇌수막염의 위험도가 매우 낮은 환자들을 찾아내는 좋은 임상예측지표이지만 나이 어린 영아에 적용하는 데는 임상적인 한계가 있었다. BMS 적용 시 주의가 필요하며 환자의 나이, 뇌척수액 소견, C-반응단백 농도등의 임상적인 소견을 고려하여 적용해야 할 것이다. Purpose: Bacterial meningitis score (BMS) has been introduced as a clinical predictive parameter for diagnosing cerebrospinal fluid (CSF) pleocytosis in children at very low risk of bacterial meningitis in the postconjugate vaccine era. This study aimed to examine the usefulness of the BMS and to identify an additional index to distinguish between enteroviral meningitis and bacterial meningitis. Methods: We retrospectively included 289 patients with enteroviral meningitis and 10 patients with bacterial meningitis between the aged 2 months to 16 years. We applied the BMS to all the included patients, and compared the initial laboratory and clinical characteristics between the two groups. Results: Of the 210 patients categorized as having a very low risk of bacterial meningitis based on BMS, 2 (1%) had bacterial meningitis, both of whom were younger than 3 months. The sensitivity, specificity, and negative predictive value of the BMS for bacterial meningitis were 80%, 72%, and 99%, respectively. Compared with patients with enteroviral meningitis, those with bacterial meningitis were younger (0.3 years vs. 5.0 years, P<0.01), had higher leukocyte count (530/mm3 vs. 43/mm3, P=0.04), neutrophil count (490/mm3 vs. 20/mm3, P<0.01), and protein level (106 mg/dL vs. 30 mg/dL, P<0.01) in the CSF, and increased serum C-reactive protein (CRP) level (79 mg/L vs. 4.5 mg/L, P<0.01). Conclusion: Although the BMS is a useful clinical predictive parameter for identifying children with CSF pleocytosis who are at very low risk of bacterial meningitis, it should be applied with caution in young infants. In addition to applying BMS, clinical parameters such as CSF profiles and serum CRP levels are useful in clinical decision making for the management of children with CSF pleocytosis.

Development of gasoline pricing solution to improve the supply chain efficiency of refinery industry

김영,박민환,박선원 한국공업화학회 2004 한국공업화학회 연구논문 초록집 Vol.2004 No.1

Development of dynamic pricing solution for supply chain optimization in refinery industry

김영,박민환,박선원 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.1

The large scale and the complexity of transportation system have raised supply chain optimization in the refinery industry as a critical issue, and accordingly, many companies have given great efforts to build the systems for minimizing transportation costs throughout the supply chain. Meanwhile, weobserved that not only the transportation cost but also price elasticity is different from region to region. Therefore, profit could be improved by pricing strategically considering the price elasticity. This study aimed at developing a dynamic pricing solution to suggest a way of improving a supply chain optimization tool.

Supply Chain Management와 정유 및 화학 산업

박선원,박민환 한국화학공학회 2004 NICE Vol.22 No.5

P-30 : Development of gasoline pricing solution to improve the supply chain efficiency of refinery industry

김영,박민환,박선원 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.2

We develop a solution that assists gasoline pricing considering decision makers` needs and game theoretical approach. This solution aims at establishing the information exchange point between distribution and pricing to improve the supply chain to be more effective. In addition to the basic information of price structure change, the advanced information for competitive strategic pricing is also provided using game theoretical approach. The ultimate goal of this study is to extend the existing distribution optimization tool by attaching this pricing solution to it. This work was supported by Center for Ultramicrochemical Process Systems sponsored by KOSEF.

Comparative study between an intensive small group teaching and a 1-year clinical practice on OSCE

김신재,우향옥,박민환,서지현,윤희상,박정제,전시영,화정석,Patricia Mullan,Larry D. Gruppen 고신대학교(의대) 고신대학교 의과대학 학술지 2018 고신대학교 의과대학 학술지 Vol.33 No.2

Objectives: Our school introduced a new curriculum based on faculty-directed, intensive, small-group teaching of clinical skills in the third-year medical students. To examine its effects, we compared the mean scores on an OSCE between the third- and fourth-year medical students. Methods: Third- and fourth-year students did rotations at the same five OSCE stations. They then completed a brief self-reporting questionnaire survey to examine the degree of satisfaction with new curriculum in the third-year students and clinical practice in the fourth-year students, as well as their perception of confidence and preparedness. We analyzed the OSCE data obtained from 158 students, 133 of whom also completed the questionnaire. Results: Mean OSCE scores on the breast examination and wet smear stations were significantly higher in the third-year group (P < 0.001). But mean OSCE scores of motor-sensory examination and lumbar puncture were significantly higher in the fourth-year group (P < 0.05). The mean OSCE scores had no significant correlation with satisfaction. In addition, the self-ratings of confidence had a high degree of correlation with satisfaction with new curriculum (r = 0.673) and clinical practice (r = 0.692). Furthermore, there was a moderate degree of correlation between satisfaction and preparedness in both groups (r = 0.403 and 0.449). Conclusions: There is no significant difference in the effect on the degree of clinical performance and confidence between an intensive-small group teaching and a 1-year clinical practice. If combined, intensive small group teaching and clinical practice would be useful to improve the degree of ability and confidence in medical students.

도심형 수직 농장과 유수지 시스템의 상호작용에 관한 연구

이은복(Lee, Eunbok),박민환(Park, Minhwan),박지영(Park, Jiyoung) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.2

The purpose of this study is to propose a solution to the food crisis by utilizing urban vacant spaces, specifically watersheds, for the planning of urban vertical farms. Building upon theoretical discussions regarding watersheds and vertical farming, this study aims to derive designs and plans for urban vertical farms that make effective use of the water environment of watersheds. The resulting designs are intended not only for the selected target area but also for application to other watersheds, creating a system where vertical farms and watersheds interact to actively utilize the water environment, surpassing conventional watershed complexification methods. Additionally, there is potential for these urban vertical farms to serve as a new urban infrastructure by integrating production, sales, logistics, and culture.

서울 인사동지역 내 보이드의 공간적 특성에 관한 연구 - 보이드를 통한 인사동의 정체성 강화 -

이은호(Lee, Eun-Ho),박민환(Park, Minhwan),박지영(Park, Jiyoung) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.2

The various urban organizations in Insa-dong operate organically with each other, constructing new spaces, and the forms and outcomes of this interaction shape the identity of the region. Originally, this cultural and artistic street was characterized by the presence of traditional art-related stores such as art supply shops and craft stores. However, over time, the proliferation of large shopping complexes and malls has led to excessive commercialization, blurring the identity of the area. This study analyzes the distinctive feature of the existing urban organization in Insa-dong, known as the void, and presents a method to refine the areas identity through its integration with programs.