연구논문 : 다중회귀모형을 이용한 벤츄리가 없는 충격기류식 여과집진장치 압력손실 예측

서정민 ( Jeong Min Suh ),박정호 ( Jeong Ho Park ),조재환 ( Jae Hwan Cho ),진경호 ( Kyung Ho Jin ),정문섭 ( Moon Sub Jung ),이병인 ( Pyong In Yi ),홍성철 ( Sung Chul Hong ),시바쿠마르최금찬 ( S Sivakumar ),최금찬 ( Kum Chan Choi ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.12

In this study, pressure drop was measured in the pulse jet bag filter without venturi on which 16 numbers of filter bags (Ø140 × 850 ℓ) are installed according to operation condition(filtration velocity, inlet dust concentration, pulse pressure, and pulse interval) using coke dust from steel mill. The obtained 180 pressure drop test data were used to predict pressure drop with multiple regression model so that pressure drop data can be used for effective operation condition and as basic data for economical design. The prediction results showed that when filtration velocity was increased by 1%, pressure drop was increased by 2.2% which indicated that filtration velocity among operation condition was attributed on the pressure drop the most. Pressure was dropped by 1.53% when pulse pressure was increased by 1% which also confirmed that pulse pressure was the major factor affecting on the pressure drop next to filtration velocity. Meanwhile, pressure drops were found increased by 0.3% and 0.37%, respectively when inlet dust concentration and pulse interval were increased by 1% implying that the effects of inlet dust concentration and pulse interval were less as compared with those changes of filtration velocity and pulse pressure. Therefore, the larger effect on the pressure drop the pulse jet bag filter was found in the order of filtration velocity(Vf), pulse pressure(Pp), inlet dust concentration(Ci), pulse interval(Pi). Also, the prediction result of filtration velocity, inlet dust concentration, pulse pressure, and pulse interval which showed the largest effect on the pressure drop indicated that stable operation can be executed with filtration velocity less than 1.5 m/min and inlet dust concentration less than 4 g/m3. However, it was regarded that pulse pressure and pulse interval need to be adjusted when inlet dust concentration is higher than 4 g/m3. When filtration velocity and pulse pressure were examined, operation was possible regardless of changes in pulse pressure if filtration velocity was at 1.5 m/min. If filtration velocity was increased to 2 m/min. operation would be possible only when pulse pressure was set at higher than 5.8 kgf/cm2. Also, the prediction result of pressure drop with filtration velocity and pulse interval showed that operation with pulse interval less than 50 sec. should be carried out under filtration velocity at 1.5 m/min. While, pulse interval should be set at lower than 11 sec. if filtration velocity was set at 2 m/min. Under the conditions of filtration velocity lower than 1 m/min and high pulse pressure higher than 7 kgf/cm2, though pressure drop would be less, in this case, economic feasibility would be low due to increased in installation and operation cost since scale of dust collection equipment becomes larger and life of filtration bag becomes shortened due to high pulse pressure.

일제 말 한국기독교 수난의 종교간 갈등 측면

서정민(Suh Jeong-Min) 한국기독교역사연구소 2001 한국기독교와 역사 Vol.15 No.-

It strongly contained a national or political aspect of the conflict between the early Japanese imperialism and Korean Christianity, especially the conflict structure of 'suppression' and 'suffering' according to 'National Church', which was the characteristic Korean Church held. On the contrary, it showed a totally different phase in the later period. In short, the contextual conflict factor was transferred from 'the matter between state and religion' to 'the matter between religion and religion.' Getting to this point, it is transferred not to the conflict according to the expressional phase such as the strength of Korean Christianity's political inclination or social participation but to the convictional and religious characteristic, i.e. the structure in which the contextual inclination becomes a issue. The subject of Korean Christianity which conflicts with the emperor systematized ideology or Japanese imperial state power, according to this amplitude change, comes to be altered. In other words, it means that the center of the conflict is sifted from the groups which, on the ground of progressive and social participating theology, have the propelling inclination toward National Christianity to the groups which, with conservative religious constancy, are absorbed in securing personal pure faith totally different are the suffering subject which was the center in the period of the conflict between Korean National Church and Japanese imperialism that was able to be evidently characterized as 'State-Religion' conflict and the suffering subject's inclination in the period of 'Religion-Religion' conflict argued in this thesis. In short, it means that an approach to extract the contacting point of the conflict by discerning various distinct inclinations of the suffering subject is possible although there is a method to understand the character of the conflict in terms of the suppressing subject's inclination. This is a work to discover the historical reversal in which we have to presume uncompromising inner-faith groups rather as Korean Christianity's final resistant power against Japanese Imperialism or the most powerful opposing subject. The latter suffering subject, regardless of its faith type, played a role in forming an axis of the final anti-Japanese national church in the situational or phenomenal aspect. This also is a historical illustration which is related with the problem to reexaime the church historical existing meaning of the relatively minor groups including Holiness Church and Baptist Church, besides the minor sufferers of the main stream churches, which, in the late period of Japanese imperial reign, experienced the peculiar suffering due to the faith inclination and exposed to the suppression.

연구논문 : 충격기류식 여과집진장치에서 압력손실에 영향을 주는 인자의 효율예측

서정민 ( Jeong Min Suh ),류재용 ( Jae Yong Ryu ),임우택 ( Woo Taik Lim ),정문섭 ( Moon Sub Jung ),박정호 ( Jeong Ho Park ),신춘환 ( Choon Hwan Shin ) 한국환경과학회 2010 한국환경과학회지 Vol.19 No.4

일제하 일본기독교의 한국교회 인식의 신학적 근거

서정민(Suh Jeong-Min) 한국기독교역사연구소 1999 한국기독교와 역사 Vol.11 No.-

한국에서의 원발성 담즙성 간경변증

서정민(Jeong Min Suh),심규식(Kyu Sik Shim),양영상(Young Sang Yang),윤승규(Seung Kew Yoon),한준열(Joon Yeol Han),안병민(Byung Min Ahn),이창돈(Chang Don Lee),정규원(Kyu Won Chung),선희식(Hee Sik Sun),박두호(Doo Ho Park),김부성(Boo Sung 대한내과학회 1996 대한내과학회지 Vol.50 No.2

N/A Objectives: Primary biliary cirrhosis(PBC) is a relatively common autoimmune liver disease in western country. But it is rare in Asia. Only 11 cases of PBC has been reported so far in Korea. We have experienced 7 cases of PRC recently. The aim of the present study is to assess the clinical characteristics of PHC in Korea. Methods: We ana1yzed 18 cases of PBC for the distribution of age and sex, initial symptoms and signs, associated disorders, frequency of autoantibodies, and pathologic stage. Results: Of 18 patients, the ratio of male to female was 1: 3.5 and the average age was 52.8 years old. Pruritus(77.8%) was the most frequent clinical symptom followed by jaundice(61.1%), chronic fatigue(44.4%), xerostomia and xerophthalmia(22.2%), and general weakness(16.7%). Associated disorders were Sjogres`s syndrome(22.2%), Behcet`s syndrome, (5.6%), bronchial asthma(5.6%), pleural effusion (5.6%), and bicuspid valve stenosis (5.6%), Detected autoantibodies were antimitochondrial antibody(100%), fluorescent antinuclear antibody(50%), rheumatoid factor(44.4%), and smooth muscle antibody(5.6%). The pathologic stages based on morphologic findings were stage 1(16.7%), stage 1-2(11.1%), stage 2 (27.8%), stage 2-3(22.2%), stage 3(16.7%), and stage 3-4(5.6%). Conclusion: The clinical characteristics of PBC in Korea are similar to those of western country`s cases. But the male to female ratio in Korea is higher than in western countires

충격기류식 여과집진기에서 경험모델을 이용한 최소압력손실의 분사거리 예측

서정민 ( Jeong Min Suh ),박정호 ( Jeong Ho Park ),임우택 ( Woo Taik Lim ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.1

The new empirical static model was constructed on the basis of dimension analysis to predict the pressure drop according to the operating conditions. The empirical static model consists of the initial pressure drop term (△Pinitial)and the dust mass number term (N dust = w(o)v(f)/P(pulse), and two parameters (dust deposit resistance and exponent of dust mass number) have been estimated from experimental data. The optimum injection distance was identified in the 64 experimental data at the fixed filtration velocity and pulse pressure. The dust deposit resistance (Kd), one of the empirical static model parameters got the minimum value at d = 0.11m, at which the total pressure drop was minimized. The exponent of dust mass number was interpreted as the elasticity of pressure drop to the dust mass number. The elasticity of the unimodal behavior had also a maximum value at d= 0.11m, at which the pressure drop increased most rapidly with the dust mass number. Additionally, the correlation coefficient for the new empirical static model was 0.914.

언더우드와 제중원 공동체

서정민(Jeong Min Suh) 한국기독교학회 2003 한국기독교신학논총 Vol.28 No.-

It is undeniable that the study results discussing the relation between Underwood and House of Universal Helpfulness(Che-Jung-Won/濟衆院, Kwang-Hye-Weon/廣蕙院) were insufficient due to the limited understanding attendant on the field of medical institutions or medical educational institutions, in spite of the fact that House of Universal Helpfulness was the first Protestant missionary institution. In other words, it is evident that the studies dealing with Allen, who was the founder, Heron, who was one of the active persons, and Avison, who unconditionally contributed to develop House of Universal Helpfulness to ‘Severance Community’ form the majority of the studies related to the community of House of Universal Helpfulness. On the other hand, in the approach to Underwood himself, it is obvious that the we can hardly find some distinct study results on the aspect of the relation with House of Universal Helpfulness, while the studies on the aspect of the missionary work including the establishment of Sae-Mun-An Church, the bible translation and tract mission, the educational work, especially the foundation of ‘Kyeong-Shin School’ and ‘Yon-Hee University’ have been frequently proceeded. Merely, the General relativity is somewhat mentioned partly or superficially in the studies related to House of Universal Helpfulness and the studies focusing on Underwood as a mail theme. However, it is clear that the missionary institution that Underwood, the first earnest Protestant missionary, came to Korea and engaged in the early work is House of Universal Helpfulness, and so is that House of Universal Helpfulness was influenced by Underwood in its development, turning process, missionary index and direction setting. In this sense, reexamining the related matters the community of House of Universal Helpfulness and Underwood accompanies with a subject of the early church history and missionary history in Korea, and extends a certain horizon in the study of Underwood as an individual. Especially, it is undoubtful that the founder Underwood, generally speaking, is stated only as a founder of ‘Yon-Hee Community’, when supposing, at the present time, the subject of the foundation history of Yonsei University as two axes, ‘Yon-Hee Community’ and ‘Severance Community’. Therefore, the study of the relation between Underwood and House of Universal Helpfulness is in close connection with the study purpose that can demonstrate the efficacy in the realm of the related history between Yonsei University and the founder. Underwood worked as a pharmacist, a medical assistant, and a professor to teach physics, chemistry, fundamental physiology in the medical education course of House of Universal Helpfulness. This work contributed to systematize the early period of House of Universal Helpfulness, as well as established a bridgehead of the missionary work there for Underwood, who had just came to Korea as a reclamation missionary. Especially, the notable fact is that Underwood`s ordinary belief strongly effected the process to set the theological and missionary course of House of Universal Helpfulness, which was founded mainly under Allen`s mission theology and work course, as well as that of Presbyterian medical mission, which was proceeded on the basis of House of Universal Helpfulness. The leadership of Underwood in ‘Presbyterian Council’ at that time, and the different opinions between Allen and understood about mission goal which came up to the surface at House of Universal Helpfulness, this policy is underwood to have been identical with Underwood`s position. Underwood took an active hand and played the positive role in the following process; the laying of the cornerstone on Thanksgiving Day, Nov. 27. 1902, the consecration ceremony on Sep. 23. 1904, and the construction and enlargement of renewed House of Universal Helpfulness, which was officially opened on Nov. 16 of the same year as the first general hospital in Korea with the sc

한국감리교회 신앙고백선언에 나타난 '성화사상'

서정민(Suh Jeong-Min) 한국기독교역사연구소 2000 한국기독교와 역사 Vol.13 No.-

경험모델을 이용한 충격기류식 여과집진기의 적정 탈진압력 예측

서정민 ( Jeong Min Suh ),박정호 ( Jeong Ho Park ),임우택 ( Woo Taik Lim ),강점순 ( Jum Soon Kang ),조재환 ( Jae Hwan Cho ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.5

A pilot-scale pulse-jet bagfilter was designed, built and tested for the effects of four operating conditions (filtration velocity, inlet dust concentration, pulse pressure, and pulse interval time) on the total system pressure drop, using coke dust from a steel mill factory. Two models were used to predict the total pressure drop according to the operating conditions. These model parameters were estimated from the 180 experimental data points. The empirical model (EM) with filtration velocity, areal density, inlet dust concentration, pulse interval time and pulse pressure shows the best correlation coefficient (R=0.971) between experimental data and model predictions. The empirical model was used as it showed higher correlation coefficient (R=0.971) compared to that of the Multivariate linear regression(MLR) (R=0.961). The minimum pulse pressure predicted by empirical model (EM) was 5kg/㎠.

한국교회 ‘토착화’와 ‘토착화 신학’에 대한 역사적 이해

서정민(Suh Jeong-Min) 한국기독교역사연구소 2003 한국기독교와 역사 Vol.18 No.-

Historians and theologians have debated over the relationship between indigenization of the Korean church and its theology of indigenization. One common, but problematic, approach has been to determine the causal relation between the two. But, we cannot reach a satisfactory conclusion unless we start the discussion anew after clearly defining the very concept of indigenization. Indigenization, when narrowly understood, is a branch of theological discourse that utilizes methods and topics developed by Western theology. However, when broadly understood, it could mean the general process of Christianity’s historical adjustment to Korea. This article argues for such a broad understanding. According to a broad understanding of indigenization, Korean Christianity underwent a continuous process of indigenization. It is apparent that Korean Christianity, in so doing, has developed characteristic forms of theology, religious culture, rites, and ethos that constitute a Korean Christianity. When indigenization is extended beyond the domain of “religion” to include the church’s contributions to Korean history, one could find profound nationalist elements in it. These elements provide the Korean church a legitimate place in a broader area of national history. In this sense, the Korean church’s responses to historical needs at crucial junctures of Korean history have been part of indigenization process. The theology of indigenization has thus far been understood primarily in relation to comparative religion and dialogues with other religions. But when we limit our discussion on indigenization within such context and let a few competent specialists dominate the debate, we will lose other important dimensions of indigenization. When we have a broad, historical understanding of indigenization, it will embrace the theology of indigenization. Korean theology of indigenization is facing a new era that demands it fundamentally to redefine the concept and boundaries of indigenization.