전처리를 이용한 탄소 나노 섬유의 균일한 SnO₂ 코팅막 형성

김동하,류도형,최병준,Kim, Dong Ha,Riu, Doh-Hyung,Choi, Byung Joon 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.1

Carbon nanofibers (CNF) are widely used as active agents for electrodes in Li-ion secondary battery cells, supercapacitors, and fuel cells. Nanoscale coatings on CNF electrodes can increase the output and lifespan of battery devices. Atomic layer deposition (ALD) can control the coating thickness at the nanoscale regardless of the shape, suitable for coating CNFs. However, because the CNF surface comprises stable C-C bonds, initiating homogeneous nuclear formation is difficult because of the lack of initial nucleation sites. This study introduces uniform nucleation site formation on CNF surfaces to promote a uniform $SnO_2$ layer. We pretreat the CNF surface by introducing $H_2O$ or $Al_2O_3$ (trimethylaluminum + $H_2O$) before the $SnO_2$ ALD process to form active sites on the CNF surface. Transmission electron microscopy and energy-dispersive spectroscopy both identify the $SnO_2$ layer morphology on the CNF. The $Al_2O_3$-pretreated sample shows a uniform $SnO_2$ layer, while island-type $SnO_x$ layers grow sparsely on the $H_2O$-pretreated or untreated CNF.

원자층 증착법을 적용한 리튬 이온 전지 연구 동향

김동하,최병준,Kim, Dong Ha,Choi, Byung Joon 한국분말야금학회 2016 한국분말재료학회지 (KPMI) Vol.23 No.2

Lithium-ion batteries (LIBs) are rapidly improving in capacity and life cycle characteristics to meet the requirements of a wide range of applications, such as portable electronics, electric vehicles, and micro- or nanoelectro-mechanical systems. Recently, atomic layer deposition (ALD), one of the vapor deposition methods, has been explored to expand the capability of LIBs by producing near-atomically flat and uniform coatings on the shell of nanostructured electrodes and membranes for conventional LIBs. In this paper, we introduce various ALD coatings on the anode, cathode, and separator materials to protect them and improve their electrochemical and thermomechanical stability. In addition, we discuss the effects of ALD coatings on the three-dimensional structuring and conduction layer through activation of electrochemical reactions and facilitation of fluent charge collection.

신개발정화조의 오염절감효과 및 경제성 분석

김동하,박흥석,박완철 ( Dong Ha Kim,Hung Suck Park,Wan Chul Park ) 한국폐기물자원순환학회 1991 한국폐기물자원순환학회지 Vol.8 No.2

공간가중회귀 모형을 이용한 서울시 에너지 소비에 따른 이산화탄소 배출 분석

김동하,강기연,손소영,Kim, Dong Ha,Kang, Ki Yeon,Sohn, So Young 대한산업공학회 2016 대한산업공학회지 Vol.42 No.2

Effort to reduce energy consumptions or CO2 emissions is global trend. To follow this trend, spatial studies related to characteristics affecting energy consumptions or CO2 emissions have been conducted, but only with the focus on spatial dependence, not on spatial heterogeneity. The aim of this study is to investigate spatial heterogeneity patterns of CO2 emission based on socio-economic factors, land-use characteristics and traffic infrastructure of Seoul city. Geographically Weighted Regression (GWR) analysis was performed with 423 administrative district data in Seoul. The results suggest that population and employment densities, road density and railway length in most districts are found to have positive impact on the CO2 emissions. Residential and green area densities also have the highest positive impact on CO2 emissions in most districts of Gangnam-gu. The resulting model can be used to identify the spatial patterns of CO2 emissions at district level in Seoul. Eventually it can contribute to local energy policy and planning of metropolitan area.

‘헌법’과 통합의 정치

김동하(Dong Ha Kim) 한국정치학회 2013 한국정치학회보 Vol.47 No.1

본 논문은 헤겔『법철학』에 나타난 헌법과 통합의 이념이 대의제에 기초한 현대사회의 규범적 통합문제를 성찰하는데 유효한 모델을 제공한다는 인식에서 출발한다. 지금까지『법철학』에 나타난 헌법학적·제도론적 시각이 배척을 받은 이유는『법철학』이 인정이론적 계기를 체계적으로 다루지 않음으로 해서 생긴 논증상의 한계 때문이었다. 이를 위해 본 논문은 인정이라는 현대 민주주의의 규범적 원리에 부합하는 방식으로 헤겔의 헌법개념과 통합의 이념을 정치제도론적으로 재구성하였다. 특히 본 논문은 기존의 단순한 제도론적 해석과는 달리『법철학』에 내재된 정치문화론적 맥락에 주목하면서 재해석하고자 하였다. 이를 통해 헤겔의 헌법개념이 단순히‘사실성’에 기초한 성문화된 기호의 체계가 아니라 정치문화 안에 구현된 자유의 이념과 가치질서를 대의하는 상징의 체계임을 해명하였다. 이상의 논의를 통해 본 논문은『법철학』의 현재성을 헌법을 통한 규범적 통합의 이념 속에 있음을 해명하고『법철학』을 규범적 통합의 이론체계로 논증하였다. 본 논문이 옹호한『법철학』의 현재적 요소들은 단순히 서구의 이론적 지형 속에서만 유효한 것이 아니라, 현대 한국의 헌정질서 안에서도 유효한 현재성이라고 할 수 있다. It has been criticized that the intense process of multipolarization in modern society could be an impediment to the continual development of democracy. As a result, political integration has been pointed out as an essential factor for the continuous development of democracy. This study argue that the unique institutional perspective in the concept of “constitution” in Hegel’s Philosophy of Right can provide insight into reflecting upon the problem of normative integration of deeply divided modern societies being based on a representative system. For this purpose, this work explains the concrete interrelationship between constitutions and political integration on the one hand and reveals the correlation between constitutional norm and patriotism on the other by reinterpreting the concept of constitution in Hegel’s Philosophy of Right from the perspective of political institution theory. It is claimed that the constitution is not merely a codified legal system but also a symbolic order representing value order of freedom embedded in political culture. Throughout this reinterpretation, this study demonstrates Hegel’s Philosophy of Right as a normative theory of integration.

장쑤철본 사례로 본 중국 거시경제정책 장애 요인

김동하 ( Dong Ha Kim ) 한중사회과학학회 2006 한중사회과학연구 Vol.8 No.-

從1998年到2002年中國政府針對當時的宏觀經濟采取了擴張性宏觀調控政策, 其中包括積極財政、通貨政策。2004年, 中央政府在提高存款利率和貸款利率的宏觀政策里明確指出, 禁止江蘇鐵本的投資, 可是据記錄對剛體業的投資竟達到462%, 投資額達1789.6億元, 占固有資産投資的2.54%, 于去年的0.57%相比, 增加1.97%。1998-2005年中央政府實行先苦仗後萎縮的政策, 與此相反, 鋼鐵投資, 鋼材消耗, 鋼材生産3大鋼鐵指標則實行先萎縮後擴張的政策。由此判斷, 中央政府的宏觀政策在向地方政府傳達的過程中出現差錯。2003年到2005年中國政府把擴張性宏觀調控政策轉換爲萎縮性宏觀調控政策, 包括緊縮財政、通貨政策。但是經濟增長率、物價、固定資産投資等宏觀指標却表現出相反的結果。對鋼鐵行業也是一樣。雖然從2003年開始中國政府采取宏觀調控和行政措施來알制鋼鐵投資, 但是2003年186.1%的鋼鐵投資增長率到2004年猛增到462.1%。這結果表明中國中央政府的宏觀調控政策到地方政府的傳導机制過程中某種因素是起障碍作用。本稿是2004年在江蘇省常州市發生的以江蘇鐵本鋼鐵項目爲例分析中國宏觀調控的障碍硏究。江蘇鐵本案件是中央政府對宏觀調控在地方政府實行的過程中存在的問題采取非市場型手段-行政措施的典型案例。2004年第一年度出現了對固定資産和鋼鐵産業的投資過熱, 因此政府決定禁止對鋼鐵等4大産業進行投資。而江蘇鐵本却无視政府的宏觀調控, 繼續投資。實際上2004年第一季度爲止, 對鋼鐵的投資率已超過100%。2004年4月江蘇鐵本事件以後, 對鋼鐵的投資急劇減少。2004年第二季度減少到5105%, 第三季度爲34.2%, 据計算到年末2004年鋼鐵投資率爲26.9%。地方政府忽視了中央政府對鋼鐵行業投資的强有力的宏觀調控政策, 爲了發展市及省的經濟, 實施了有效的短期鋼鐵投資。2005年7月中國政府出台了"中國鋼鐵發展政策"的産業政策。2005年4月鋼鐵産業政策順利地通過了國務院商業會議, 經過與地方政府的一直協商, 4個月後正式公布該政策。鋼鐵産業政策包括淘汰落後的設備, 强化市場進出, 發展大型的鋼鐵業, 保護環境等强有力的政策。對鋼鐵業的投資有흔大的影響。結果2005年第一季度對對鋼鐵業的投資竟是-1.4%。還有爲了逃避中央政府的審批程序, 省政府采取了分流投資金額方式。而且地方政府不完善的金融監督體系導致了超額和重復貸款, 甚至默認流動資金轉用到固定資産投資。江蘇鐵本案件的處理過程中我們可以看到中央政府的宏觀調控本身的限制性。中央政府動用``殺一儆百``方式的辦法處與省政府和市政府有關聯公務員。甚至人民日報的評論也提到江蘇鐵本案件。以上可以看出, 中國宏觀調控的最大障碍主要顯示在以下3個方面。第一地方政府對中央宏觀調控的偏向性看法, 第二无條件的回避中央政府宏觀調控的地方政府態度, 第三中央政府的通過刺激性的行政措施來來督地方政府的傾向。

신라 사천왕사 창건가람과 창건기 유물 검토

김동하(Kim, Dong-ha) 한국고대사탐구학회 2016 한국고대사탐구 Vol.23 No.-

본고에서는 발굴조사로 확인된 유구를 통해 679년 사천왕사 창건가람의 구조를 추정해보았고, 아울러 사천왕사 창건가람에 사용되었던 瓦塼을 살펴보았다. 마지막으로는 창건가람의 구성과 창건기 유물을 통해 사천왕사가 철저한 계획성과 의도성에 의해 造營되었다는 사실을 구체적으로 검토하였다. 먼저 사천왕사 창건기에는 선대금당, 목탑, 추정단석지, 그리고 회랑 등이 건립되었으며, 각 불전들은 모두 설계 당시부터 일정한 규칙을 적용해 배치되었던 것으로 확인된다. 특히 단위면적 20.5×22m의 공간을 이용하여 중심사역이 마련되었고, 그 안에 금당과 목탑, 그리고 추정단석지 등의 중심건물이 건립되었다는 사실을 알 수 있다. 이러한 결과치는 향후 사천왕사 조영척도를 연구하는데 도움이 될 것으로 기대한다. 다음은 사천왕사지 출토 유물 중 창건기 유물을 선별해 보았다. 목탑 기단의 재료로 사용된 녹유벽전과 당초문전, 각 건물 지붕에 장엄된 암・수막새, 그리고 사천왕사의 가장 표지적 유물인 녹유유물에 대해 구체적으로 검토하였다. 특히 창건가람에 사용된 瓦塼들이 일괄적으로 동일한 장인집단에서 만들어졌으며, 오로지 사천왕사를 위해 專用으로 제작되었을 것으로 추정하였다. 마지막으로 사천왕사 조영의 특징에 대해 살펴보았다. 특히 주목되는 것은 사천왕사 조영계획에 있어 불전의 건축(지대석 가공)과 해당 불전에 장엄되는 재료(녹유신장벽전과 당초문전 제작)가 서로 밀접한 관계 속에서 함께 기획・제작되었다는 것을 알 수 있었다. 이러한 양상은 당시 사천왕사 조영을 총괄하는 지휘부가 있었다는 것을 짐작할 수 있으며, 아울러 그 지휘부는 건축 설계 뿐만 아니라, 건축에 이용될 資材의 세부디자인과 규격까지 포함하는 정밀한 설계계획안을 가지고 있었을 것으로 볼 수 있다. This study aims to determine the original structure and layout of Sacheonwangsa (四天王寺) Temple at the time of its foundation in 679 during the Silla Dynasty by examining the ruins, which was confirmed by excavation research, and to examine the roof tiles and bricks (瓦塼) used in the construction of Sacheonwangsa Temple. As a conclusion, this study reviews in detail the composition of the construction of temple, and by examining relics from the time of its foundation, aims to confirm that Sacheonwangsa Temple was thoroughly planned and designed. First, at the time of Sacheonwangsa Temple’s foundation, the main Geumdang building from the early period (先代金堂), a wooden pagoda (木塔), the Danseokji site, where Buddhist ceremonies are believed to have taken place, and the corridor (回廊) were built; and it has been confirmed that each Buddhist shrine was allocated all by applying a regular rule from the time of its design. It can be known that the central zone was built over a space measuring 20.5×22m, within which the main Geumdang (金堂) building, wooden pagoda and Danseokji site were all built. This result is expected to be helpful for future research on the construction criteria for Sacheonwangsa Temple. Next, this study sorts out relics from the time of its foundation among the relics excavated at the Sacheonwangsa Temple site and reviews in detail the bricks with green glaze (綠釉壁塼) and arabesque-patterned bricks (唐草文塼), the eaves of roof tiles (瓦當) and green-glazed relics, which are representative features of Sacheonwangsa Temple. It is estimated that the roof files and bricks (瓦塼) used at the time of its foundation were made by the same group of craftsmen exclusively for the temple. Lastly, this study examines the main characteristics of the construction of Sacheonwangsa Temple. It is noteworthy that, in terms of the temple’s construction in particular, the Buddhist shrine (i.e. the processing of foundation stones) and the materials used to decorate the corresponding Buddhist shrine (i.e. the production of bricks with green glaze and arabesque-patterned bricks) were planned and produced in a close relationship. This leads one to assume that there was a general command unit or division of some sort that controlled the construction of Sacheonwangsa Temple at that time, and that it had not only a construction design but also a detailed plan, including the materials to be used in the construction work, and detailed designs and measurements.

산업디자인 혁신의 실체에 관한 연구

김동하(Kim Dong-Ha) 한국디자인학회 2008 한국디자인학회 학술발표대회 논문집 Vol.- No.-

협력 관점에서 ‘서울시 건강생태계 조성사업’ 돌아보기

김동하(Dong Ha Kim),유승현(Seunghyun Yoo) 한국보건교육건강증진학회 2022 보건교육건강증진학회지 Vol.39 No.3

한일 독도 영유권과 어업문제 연구: 샌프란시스코 강화조약 전후시기를 중심으로

김동하(Kim, Dong-Ha) 동북아시아문화학회 2020 동북아 문화연구 Vol.1 No.64

The confrontation between Korea and Japan over Dokdo Island’s sovereignty continues to this day. However, it has been over 70 years since the liberation from Japan to reclaim the stolen territory. It also raises questions about the basis for Japan to claim Dokdo Island as their territory. One of the reasons is that Dokdo Island was not contained in the territory of Korea that Japan should give up in the contents of the San Francisco Peace Treaty. And this is the basis that Japan keep claiming Dokdo Island’s sovereignty. Meanwhile, Japan’s expansion of fishing zones immediately after the signing of the San Francisco Peace Treaty was a major threat to Korean fishing workers. Naturally, the Korean government tried to come up with a countermeasure. This was directly related to Dokdo Island’s territorial sovereignty, accelerating friction with Japan. If so, there is a natural interest in how Korea and Japan’s Dokdo Island dispute and the fisheries issues are connected to each other. And also it is necessary to find out how did Korean government resist against expansion of Japanese fishing territory after the San Francisco Peace Treaty. Therefore, this research is focusing on the period before and after the San Francisco Peace Treaty, which signed in September 1951, to find out how the international recognition of Korea’s sovereignty over Dokdo Island is frustrated and what was the countermeasure of Korean government against Japan’s illegal fishing on the Korean Peninsula. In order to progress this research subject, the researcher will use related book, thesis and internet material.