Fluidized-bed reactor를 이용한 메탄으로부터 합성가스제조

김상범,신기석,박은석,천한진,함현식 한국공업화학회 2002 한국공업화학회 연구논문 초록집 Vol.2002 No.0

Fluidized-bed reactor를 이용한 메탄으로부터 합성가스제조 김상범·신기석·박은석·천한진·함현식 명지대학교 화학공학과 화학산업에서 합성가스는 중요한 원료로 사용되고 있다. 합성가스를 제조하는 공정은 현재 상업화되어 있는 steam reforming 공정이 있다. 이 공정은 에너지 비용이 많이 들어가는 단점을 안고 있다. 이에 본 연구에서는 발열반응인 부분산화에 의해 합성가스를 제조하였다. 우선 fixed-bed reactor를 이용하여 활성이 우수한 촉매를 찾고자 하였다. fixed-bed reactor는 반응 중 carbon의 형성이나 촉매의 swelling에 의해 반응기체가 원활히 흐르지 못함에 따른 부작용이 발생할 수 있다. 본 연구에서는 이러한 부작용을 없앨 수 있는 형태의 반응기로써 fluidized-bed reactor를 이용하여 fixed-bed reactor 에서의 촉매활성과 비교하고자 하였다. 또한 반응의 경로를 알아보기 위하여 pulse 방식으로 반응물을 주입하여 촉매층 상하에서 일어나는 온도변화, O₂-TPD, 반응물과 생성물의 몰수변화 등을 측정하여 반응메카니즘을 규명하고자 하였다.

天文知識의 독점과 규제 : 宋政府의 天文規制措置와 天文敎育을 중심으로

김상범 韓國暻園大學校아시아文化硏究所 中國中央民族大學韓國文化硏究所 2004 亞細亞文化硏究 Vol.8 No.-

在中國早期天文知識的傳遞多透過家學, 可以稱爲‘疇人之學’, 而中央集權的秦漢統一帝國出現之後, 疇人之學逐漸喪失其地位, 轉化爲官方敎育的一部分, 通過徵召·??擧·選任等方式, 廣搜天下擅長天文·曆法的科技人才, 使他們擔任天文官僚. 原來古代主管天文的太史其職責??多, 除了天文工作之外, 尙有(1)祭祀時向神禱告, (2)爲了朝廷的各種典禮選擇吉日良辰, (3)策命諸侯卿大夫, (4)記載史事和編寫史書, (5)起草文件, (6)掌管圖書 等. 可以說“是一個混合宗敎祭祀·卜筮·天文觀測與資料記錄的綜合體. 魏晉南北朝時代以後, 天文觀測和史書編寫的職能逐漸分開, 經過隋唐時代, 天文機構本身所實行的敎育系統也逐漸完整地建立, 硏究和敎育成爲同時業種的兩大目標. 比較宏觀的角度來看, 宋元可謂是司天監的硏究, 敎育系統的完成期. 但是對於這種天文敎育系統制度上的完備, 筆者業不完全肯定, 因爲在此我們不能忽略天文敎育的封閉化現象. 自古以來, 在中國天文知識成爲統治權力的象徵, 歷代統治者爲了壟斷天文知識, 嚴禁天文的私傳私習. 但天文禁止令的效果總是有限的, 隨着時代的推移整個政治社會的結構與風氣讓天文機構本身, 尤其培養天文人才的敎育系統愈來愈顯示出封閉化的趨勢了. 如果本文所見宋朝每位皇帝對私習天文的嚴禁措施以及司天監官吏子弟爲主的試補制度是這種封閉化趨勢的過程, 明淸以後陰陽戶的出現則是天文敎育封閉化趨勢的結果. 這種封閉式敎育, 其敎育效果方面誠然有限制的, 尤其我們考慮本身不太重視專才敎育的社會環境和技術官僚在社會流動上面所受的不平等特遇時, 其結果是更明顯的, 根據淸代阮元在『疇人傳』所做的統計資料, 歷代傑出的曆算家中, 服務於天文機構者只是總人數的一小部分, 從秦到淸平均只有百分之十左右而已. 如果我們承認『疇人傳』所載的學者們具有一定的水平, 則對天文硏究有貢獻的人大多不是司天職的官員, 這就顯示爲封閉性制度所運用的天文敎育的限制.

선보상-후시공 제도의 공공건설사업 파급효과 분석

김상범,최정원,Kim Sang-Bum,Choi Jeong-Won 한국건설관리학회 2004 건설관리 : 한국건설관리학회 학회지 Vol.5 No.6

Pre-compensation and post-construction policy'(PCPC) is a part of $\ulcorner$public project performance improvement policies (PPPIP)$\lrcorner$ whose purpose is to reduce the construction project cost by $20\%$. This research focuses on measuring the quantitative and qualitative impacts of PCPC public construction project. The evaluation of PCPC was conducted using five performance indices which are measuring performance improvement in terms of project cost and schedule. The analysis results show that implementation of this policy reduced $4.8\%$ of public construction project budget while playing a positive role in shortening the project schedule.

라이프스타일에 따른 여행상품 구매행동에 관한 연구

김상범 한국관광산업학회 2003 Tourism Research Vol.17 No.-

($\eta^{6}$-Mesitylene) manganese-(Ⅰ) Tricarbonyl hexafluorophosphate를 사용한 Pseudomonas Alcaligenes 5S rRNA의 고차원 구조 분석

김상범,박인원,Kim, Sang Bumn,Park, In Won 대한화학회 1998 대한화학회지 Vol.42 No.2

The higher order structure of Pseudomonas alcaligenes 5S rRNA has been investigated by using ($\eta^{6}$-mesitylene) manganese (Ⅰ) tricarbonyl hexafluorophosphate[MTH-Mn (Ⅰ)], dimethylpyrocarbonate, potassium permanganate as chemical probes. The sequences cleaved strongly by MTH-Mn (Ⅰ) on the tertiary structure of the 5S rRNA are $G_{12}AUGG_{16}$ of loop a, $G_{51}AAGUGAAGC_{60}$ of the region b-C, $U_{65}-AGCG_{69}$. of the region B-a, and $G_{72}AUGG_{76}$ of loop d. Based on such cleavage patterns of 5S rRNA by MTH-Mn(Ⅰ) and other chemical probes, we presume that the sequences strongly cleaved form pocket-like structure as in the the corner of L structure of $tRNA^{Phe}$. We also presume that the region b-C and loop d together play a role of hinge in forming the pocket-like structure in the 5S rRNA.

계속비 사업 확대로 인한 공공건설사업 파급효과 분석

김상범,이정대,조지훈,Kim, Sang-Bum,Lee, Jeong-Dae,Cho, Ji-Hoon 한국건설관리학회 2008 건설관리 : 한국건설관리학회 학회지 Vol.9 No.3

Domestic construction industry accounts about 15% of Gross Domestic Product(GDP) and Korean government spends approximately 50 trillion won per year for public infrastructure projects. Effective management of public construction projects would result in cost saving and enhance financial stability of the government. In doing so, the government promoted a new budgeting system, Continual Budget Method(CBM) as a part of public project performance enhancement program published in 1999. This research mainly attempted to investigate and analyze the impact of new budgeting in term of cost and schedule performance. Based on the analysis result of n2 projects. The new budgeting system could save project cost by 9.83y. Due to the saving of indirect costs from reduction. Although limited government budget cannot allow all the projects to be excuted with the new budgeting system, the new budgeting system should be more-widely utilized in the public sector because of its proven benefits from this research.

해외사례 벤치마킹에 기반한 국내 CM 대가체계 개선 시사점 도출

김상범,이정대,김재욱,Kim, Sang-Bum,Lee, Jeong-Dae,Kim, Jae-Wook 한국건설관리학회 2008 건설관리 : 한국건설관리학회 학회지 Vol.9 No.1

국내 CM은 2001년 건설산업기본법에 의해 개념과 범위가 정의된 후 지속적인 성장을 계속해 오고 있다. 하지만, 이러한 CM 제도에 기반한 성장에도 불구하고 국내에서의 CM 적용성과는 기대치에 비해 상대적으로 낮은 것으로 나타났다. 그 주요원인의 하나로 국내 CM제도가 책임감리에 비하여 업무범위가 넓지만, 대가기준은 책임감리에 비해 낮기 때문인 것으로 분석되었다. 따라서, 국내 CM 대가체계의 합리적인 기준을 정립하는 것이 시급할 것으로 판단된다. 본 연구에서는 CM 대가체계의 합리적인 기준을 마련하기 위하여 CMAA, ASCE, DOE, DOL 등의 다양한 해외사례 벤치마킹 연구를 통하여 국내 CM 대가체계를 비교하여 대가 상승요인을 추정하고 대가산정 개선방향을 제시하였다. 분석결과 대가수준은 해외에 비하여 현저하게 낮은 수준인 것으로 판단되었으며, 업무범위는 해외와 비교하여 그 폭이 좁으며 획일적인 구조를 가진 것으로 분석되었다. 따라서, 본 연구에서는 글로벌스탠다드에 따르는 국내 CM 대가체계를 개선하기 위하여 실비정액보수가산(Cost Plus Fixed Fee) 방식을 제시하고, 입 낙찰 전반에 걸친 CM 대가체계에 대한 기준(Framework)을 제시하였다.

건설 산업 이미지 영향 요인 분석에 관한 연구

김상범,이정대,박민제,Kim, Sang-Bum,Lee, Jeong-Dae,Park, Min-Jea 한국건설관리학회 2008 건설관리 : 한국건설관리학회 학회지 Vol.9 No.5

The construction industry has been leading the growth of the nation's economy not only by providing with various infrastructure projects but also by positively impaction related industries such as crating numerous job opportunities. Relevant statistics show the production amount of construction taking about 17.5% of the GDP (Gross Domestic Product). In spite of its positive impacts on the economy, image of Korea construction industry is generally reflected as negative mainly because of its environmental disruption, low payment, bribe, fraudulent work and inefficiency. It brings students to be reluctant choosing the construction industry as their carrier path and governmental and principal research status. Therefore it has been difficult to recruit highly qualitied human resources to the industry while the morale of the whole industry has gradually become demoralized. To improve this stand, many domestic researchers carried out research projects for improving the image of Korea Construction Industry. This study also sympathizes with necessity of improving the negative image of construction industry to remain as one of the leading industry in the 21st century. Especially, this study focused on finding important factors which have significant influences on the image of the industry. Through out the research, image influence factors was identified by rigorous literature review and interviews as industrial and academic experts. Factors, then, categorized and used as the main framework for the survey which designed to fine the degree of impacts on the image of the construction industry. In analyzing the survey results, various statistical techniques was employed including factor analysis, Chi-Square-Test, Correlation Analysis and Multiple Linear Regression. Identified as the most influent factors to the image of the construction industry include morale of construction employee, and prospects the industry which of the judgement by payment, impacts on nation's economy, future of the industry, etc.

Quantitative Evaluation on Organizational Knowledge Implementation in the Construction Industry

김상범 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.1

One way of improving organizations is by implementing knowledge which can be obtained from research products. Although there are many valuable research products available which have tremendous potential to improve the organization from research,many of them have not been implemented to a significant extent on real world projects. This study is initiated by the willingness to validate the importance of knowledge implementation in the context of knowledge management. Developing a quantitative evaluation index of knowledge implementation is the main objective of this study. In developing the index, the Construction Industry Institute (CII) sponsored research products and its member companies were used as main data sources. The index, named as CII Knowledge Implementation Index (CKII), was used to evaluate the organizational knowledge implementation level among U.S. based firms in the construction industry. Analysis results show that there is a wide range of implementation levels among survey respondents. Relationships between research participation and knowledge implementation are also examined in this study but the analyses results failed to show statistical significances between the two factors. This study is one of the first attempts to quantify the knowledge implementation at the organizational level in the construction industry.

생명공학에 의한 인(P) 자원의 절감과 재이용

김상범,석영선,Kim, Sang-Beam,Seok, Yeong-Seon 한국연초학회 2013 한국연초학회지 Vol.35 No.1