치주질환 심도에 따른 조직내 림프구 및 NK 세포의 변화에 관한 면역조직학적 연구

최호근,권영혁,이만섭,Choi, Ho-Keun,Kwon, Young-Hyunk,Lee, Man-Sup 대한치주과학회 1993 Journal of Periodontal & Implant Science Vol.23 No.2

Periodontal disease research has been focused on understanding the immunopathologic mechanisms which may operate in the development and maintenance of peiodontal inflammatory changes. Immunologic and inflammatory responses may relate to the etiology and pathogenesis of periodontal disease. In order to research immunopathology of periodontal disease, previous investigators have spent much time on the distribution of lymphocyte subpopulations and NK cells but they have spent less time on the changes of those cells to the periodontal disease severity. The purpose of study was performed to investigate the changes of the distribution of T lymphocytes, B lymphocytes, T lymphocyte subsets, and Natural Killer cells in the gingival epithelium and connective tissue of the periodontal disease with the various clinical parameters including Gingival Index, Sulcular Bleeding Index, and pocket depth. Gingival tissues were obtained from 25 patients with different severity of periodontal disease. Serial cryostat sections displaying a cross section of gingiva were labelled with monoclonal antibody for pan T cells, T cytotoxic/suppressor cells, T helper/inducer cells, pan B cells, and NK cells were develped using an avidin-biotin-peroxidase system. Lymphocyte populations were enumerated in repeatable fields from gingival section. 1. T cells were more increased at grade 1 and 3 than at grade 0 of gingival index (p<0.05). Helper T cells and NK cells were significantly increased at grade 1, 2, 3 than at grade 0(p<0.05). 2. T cells were more decreased at grade 3 and 4 than at grade 1 of sulcular bleeding index (p<0.01, p<0.05). Especially, Natural Killer cells were significantly increased at grade 1, 2, 3, 4 than at grade 0 (p<0.05, p<0.001). 3. The ratios of helper T/suppressor T cells were more decreased at grade 4 than at grade 0 and at grade 4 than at grade 2 of sulcular bleeding index (p<0.05, p<0.05). 4. Helper T cells were significantly decreased at grade II and III than at grade I, however the Natural Killer cells showed a increasing tendency with the increase of the pocket depth, there were no significant differences between each grade of pocket depth. 5. The ratios of helper T/suppressor T cells were tended to be decreased with the increase of the pocket depth, there were no significant differences between each grades of pocket depth. There was a very weak change in the distribution of T lymphocytes, B lymphocytes, T lymphocyte subsets, and Natural Killer cells in the gingival epithelium and connective tissue of the periodontal lesion with the various clinical parameters including gingial index, sulcular bleeding index, and pocket depth. But, the number of T lymphocytes and Natural Killer cells were significantly changed in gingival index and sulcular bleeding index.

섬유강화형 복합레진브릿지의 파절강도 및 변연적합도에 관한 연구

최호근,신상완,임호남,서규원,Choi Ho-Kuen,Shin Sang-Wan,Lim Ho-Nam,Suh Kuyu-Won 대한치과보철학회 2001 대한치과보철학회지 Vol.39 No.5

Fiber-reinforced composite(FRC) was developed as a structural component for dental appliances such as prosthodontic framework. FRC provides the potential for fabrication of a metal-free, excellent esthetic prostheses. It has demonstrated success as a result of its simple fabrication, natural colour, and marginal integrity, and fracture resistance of veneering composite resin and the FRC material. Although it has lots of merits, clinical and objective data are insufficient. The purpose of this study was to evaluate the fracture strength and the marginal fitness of fiber reinforced composite bridge in the posterior region for clinical application. Sixteen bridges of each group. $Targis/Vectris^{(R)}$, $Sculpture-Fibrekor^{(R)}$, and In-Ceram, were fabricated. All specimens were cemented with Panavia 21 to the master dies. Strength evaluation was accomplished by a universal testing machine (Instron). The marginal fitness was measured by using the stereoscope (${\times}50$). The results were as follows. : 1. The fracture strength according to the materials was significantly decreased in order In-Ceram($238.81{\pm}82$), Targis Vectris($176.25{\pm}18.93$), Sculpture-Fibrekor($120.35{\pm}20.08$) bridges. 2. FRC resin bridges were not completely fractured, while In-Ceram bridges were completely fractured in the pontic joint. 3. The marginal accuracy was significantly decreased in order Targis/Vectris ($60.71{\mu}m$), Sculpture-Fibrekor($73.10{\mu}m$) In-ceram Bridge ($83.81{\mu}m$). 4. The fitness of occlusal sites had a lower value than the marginal sites(P<0.001), and the marginal gaps of inner site of the pontic were greater than that of outer sites of the pontic. Fiber reinforced composite bridges are new, esthetic prosthesis and can be clinically used in anterior regions and short span bridges. However, caution must be exercised when extrapolating laboratory data to the clinical situation because there are no long term clinical data regarding the overall success of the FRC.

상순소대의 형태별 발생빈도와 치주건강과의 연관성에 관한 연구

최호근,권영혁,이만섭,Choi, H.K.,Gwon, Yeong-Hyeok,Lee, Man-Seop 대한치주과학회 1992 Journal of Periodontal & Implant Science Vol.22 No.2

일차대전과 프리드리히 마이네케

최호근(Ho Keun Choi) 한국독일사학회 2001 독일연구 Vol.- No.1

Der Erste Weltkrieg stellte in mehrfacher Hinsicht einen bemerkenswerten Wendepunkt des politischen und historischen Denkens Friedrich Meineckes dar. Zuerst fällt seine veränderte Stellungnahme zur politischen Verfassung in Deutschland auf: Er wandelte sich von einem ‘Herzenmonarchisten’ zu einem ‘Vemunftrepublikaner’. Eine weitere deutliche Veränderung ist in thematischer Hinsicht zu beobachten: Sein historisches Interesse verschob sich m verstärktem Masse auf unpolitische Gebiete. Zudem führten Kriegserfahrung und Demütigung ihn zu einem Ansatz der kritischen Überprüpfung der deutschen Vergangenheit. Die wichtigste Wandlung in seinem historischen Denken fand jedoch auf der historischen Grundanschauung statt: Durch den Krieg erkannte er auf das schärfste die starken Schatten der Identitätsphilosophie im deutschen historischen Denken und kehrte zur Individualitätsidee zurück. Meineckes Neigung zur Individualität wurde zwar durch das Kriegserlebnis veranlasst, war aber keine grundsätzliche Neuerung in seinem historischen Denken. Diese Neigung ist bereits in seinem Persönlichkeitsidealismus der frühen Phase seiner Geschichtsanschauung deutlich zu erkennen. Vor diesem Hintergrund meine ich, dass die Kriegserfahrung keinen wesentlichen Bruch in seinem historischen Denken mit sich brachte. Aus seiner kritischen Haltung zur an der Nation orientierten deutschen Geschichtswissenschaft und aus seiner Forderung nach einer Universalgeschichte folgte keine eindeutige theoretische und methodologische Wandlung bzw. Vertiefung. Deswegen liegt die Bedeutung der Kriegstätigkeit Meineckes eher darin, dass er in einer extremen Situation sein Wissenschaftsideal weiter beibehielt. Abgesehen von der Frühphase des Krieges bis 1915 strebte er auch bei seiner Kriegstätigkeit als Publizist noch nach der Sicherung der methodischen und perspektivischen Strenge der Geschichtswissenschaft. Auch von der epidemischen ethnischen Stereotypenbildung war er wenig beeinflusst. Dadurch bildete er eine der wenigen Ausnahmen unter den deutschen Historikern, die meist für die Pflicht eines Bürgers zur patriotischen Hingabe an die Nation die Gebote eines kritischen Wissenschaftlers opferten.

막스 베버와 독일 역사학 - 막스 베버의 역사사회학과 동시대 역사가들의 영향관계를 중심으로

최호근(Ho Keun Choi) 한국서양사학회 2001 西洋史論 Vol.68 No.1

The purpose of this article is to examine Weber`s position with his historical sociology in the history of German historicism, especially from a methodological viewpoint. It was argued strongly in recent years that he must be regarded as a outstanding scholar who criticized the irrational character of the historicism in its later phase. This argument is, however, based not on Weber`s own estimation of the contemporary German historiography as a whole. The article examines Weber`s attitude to the practice as well as theories of the contemporary historians by analyzing his own theoretical and historiographical works. The mast important clue for a explanation of Weber`s relation to German historicism is the fact that his critical attitude to Karl Lamprecht`s cultural history, a challenge to the traditional history, and to its positivistic assumptions was mostly based upon the theoretical position of the representatives of German `political history`. The point of this position was a respect for the social action of man in history and for `understanding` (Verstehen) as a historical method. It was the core of the German historicism which Max Weber shared with his contemporary historians. Weber tried to innovate the historical method `understanding` by removing irrational factors in its concept. He articulated the logic of `understanding` which was neglected in German historiography after J. G. Droysen with his concept forschend zu verstehen. The core of the logical mechanism of `understanding` called Weber causational explanation. In this sense Max Weber can be regarded not merely as a critic but as a creative successor of German historicism. (Korea University)

기념시설을 활용한 역사교육

최호근(Choi, Ho-keun) 호서사학회 2013 역사와 담론 Vol.0 No.66

계몽사상과 역사주의 : 특집기획논문

최호근(Choi, Ho-Keun) 한국사학사학회 2011 韓國史學史學報 Vol.0 No.23

이 글의 목적은 계몽사상에서 역사주의로의 이행의 성격을 규명하는 데 있다. 이를 위해 이 글에서는 계몽사상과 역사주의의 관계를 이론, 방법론, 재현방식이라는 세 가지 각도에서 검토하였다. 이를 통해 밝혀진 점은 다음과 같다. 첫째, 계몽사상이 이론을 서술을 위한 전략으로 상정했던데 반해, 역사주의에서 이론은 역사의 진행을 파악하기 위한 탐구의 틀로 받아들여졌다. 둘째, 계몽사상에서 방법이 서술의 방법에 한정되었던데 반해, 역사주의에서는 지식을 획득하기 위한 절차와 수단이라는 의미로 확장되었다. 셋째, 계몽사상에서 이야기식 서술이 지배적이었다면, 역사주의는 압축과 각주에 의한 전문가적 글쓰기를 표방하였다. 이와 같은 차이에도 불구하고, 계몽사상과 역사주의의 관계를 단절로 파악하는 것은 일면적이다. 왜냐하면 역사주의의 핵심이라 할 수 있는 역사성에 대한 존중은 후기 계몽사상에서도 발견되고, 서술방식에서도 연속적 측면이 충분히 존재하기 때문이다. 이러한 점들에 근거하여 이 글에서는 역사주의를 단순히 계몽사상의 대립물이나 연속으로 보기보다는, 특히 이론과 방법론 측면에서 계몽사상을 발전적으로 계승한 결과로 파악한다. This paper is to grasp characteristics of the transformation from Enlightenment to Historicism. It deals with the relation between Enlightenment and Historicism under the point of view: theory, methodology, and the mode of representation. The results of the research are as follow: First, the Historicism regarded the theory as a scheme of research to apprehend the process of history, whereas the Enlightenment understood it mainly as strategies for description. Second, in the period of Historicism was the meaning of method gradually expanded: from the method of description to procedure and tool gaining knowledges. Third, the Historicism advocated professional writing which is characterized through summarization and footnotes. Despite of many differences between Enlightenment and Historicism, it seems to be one-sided to interpret the relation simply as ruptured one. Some historians of Enlightenment showed enough respect for historicity as the historicists. Moreover there was continuity in the way of writing. Therefore the Historicism could be interpreted rather as a result of the Enlightenment than as a antipode or continual result of it.

독일제국의 기념물 건립 붐과 민족주의, 1871-1914

최호근 ( Ho Keun Choi ) 대구사학회 2010 대구사학 Vol.101 No.-

The paper is to apprehend the causes and characteristics of the boom of public memorial construction in German Kaiserreich under the viewpoint of `battle of symbols`. It focuses on analyzing the social and political characters of groups who led building national memorials and their political intentions, the mode of construction, and the strategies of narrative. It deals with five representative public memorials in that era: the Hermannsdenkmal(1838-l875), the Niederwalddenkmal(1877-1883), the Siegessaule(1864-1873), the Kyffhauserdenkmal(1890-1896), and the Volkerschlachlachtdenkmal(1898-1913). The Hermannsdenkmal in Detmold was built according to plans by the sculptor Ernst von Bandel and commemorates the Cherusci war chief Hermann and the Battle of the Teutoburg Forest. The construction of the monument was initiated and led mainly by Bildungsburgertum. Accordingly it represents in many aspects the bourgeois values such as liberty and equality between nations. The Siegessaule in Berlin was built to commemorate the Prussian victory in the Danish-Prussian Wai, Austro-Prussian War and in the Franco-Prussian War. It was initiated and guided solely by the prussian king Wilhelm. Ii is, therefore, regarded as a typical monarchical monument. The Niederwalddenkmal in Rudesheim was constructed to commemorate the foundation of the German Empire after the end of Franco-Prussian War. It was artistically and politically a compromise between nationalist-liberal and nationalist-monarchical views. The Kyffhauserdenkmal in Frankhausen and the Volkerschlachtdenkmal in Leipzig represent a new type of national monuments in Germany which are distinguished not only by architectural mode, but also by political anticipations of the initiators. They belong to Volksdenkmal which try to idealize the assumed medieval German Volksgemeinschaft.

내러티브와 역사교육

崔豪根(Choi, Ho-Keun) 역사교육연구회 2013 역사교육 Vol.125 No.-

The paper is to show the significance of narrative for history education in three points. First, it tries to grasp distinctive characters of historical narrative. Second, it clarifies the structure of historical narrative on the basis of preceding inquiries especially in seventies and eighties of 20th century. Third, it discerns three types of historical narrative and shows various combination of them. The main feature of historical narrative lies in the consciousness of time. Depending on the scope of time historical narrative could be divided in three types: macro, meso, and micro narrative. Macro narrative mainly relies on normative explanation, whereas micro narrative for the most part is based upon intentional explanation. Historical narrative, therefore, should be constructed variously depending on the recipient.

역사서술과 문학의 중첩과 갈림 -랑케의 『종교개혁 시기의 독일사』 내러티브 분석-

최호근 ( Choi¸ Ho-keun ) 한국서양사학회 2021 西洋史論 Vol.- No.148

이 글에서 필자는 랑케의 『종교개혁 시기의 독일사』를 분석함으로써, 독일 역사주의를 대표하는 랑케의 역사서술의 특징을 파악하고자 하였다. 이러한 텍스트 분석을 통해 역사서술이 문학과 공유하고 있는 특징들을 확인할 수 있었다. 랑케는 그의 텍스트에서 수사학적 기법들을 적극 활용하였다. 그러나 그의 서술에서 문학적 장치들은 어디까지나 도구적으로 활용되었을 뿐이라는 점을 간과해서는 안 된다. 랑케가 재현하고자 했던 것은 개연성의 세계가 아니라, 원자료를 통해 확증할 수 있는 경험의 세계였기 때문이다. 그렇지만, 경험적 세계에 대한 천착이 랑케의 역사서술을 문학으로부터 구별해주는 유일한 요소는 아니다. 랑케의 역사서술에서 이보다 더 중요한 것은 다양한 시간의 차원들에 대한 의식이었다. 그의 주안점은 구조의 시간, 경향과 국면의 시간, 사건의 시간을 역사서술 속에서 통합하는 데 있었다. 그의 서술에서 이러한 통합을 가능하게 해준 것은 마르틴 루터라는 세계사적 개인이었다. 이러한 점을 고려할 때, 『종교개혁 시기의 독일사』를 역사서술의 탈수사학화나 역사와 문학의 중첩을 보여주는 사례로 단순화하는 것은 무리이다. 이 저작은 중년 이후부터 랑케가 도모했던 역사서술의 심미화의 결과로 평가하는 것이 좀 더 적절할 것이다. The aim of this article is to identify the characteristics of Ranke‘s historical writings by critically analyzing his Deutsche Geschichte im Zeitalter der Reformation. These textual analyses identify the characteristics which his historical narrative shares with literature, by looking specifically at the manner with which he actively uses rhetorical techniques. However, it should not be overlooked that literary devices were instrumentally used in his description, as what he wanted to represent was not a world of possibilities, but a world of experience that could be corroborated through raw materials. Nevertheless, his obsession with the empirical world was not the only factor that distinguished Ranke's historical narrative from literature. His focus was on integrating the structures of time, of trends and phases, and of events. It was actually Martin Luther, a historical individual from the Church, who made this integration possible in his historical narrative. Taking this into consideration, it is unreasonable to regard Ranke's Deutsche Geschichte im Zeitalter der Reformation as an example showing the difference between historical and literary narrative, or the overlap of historical writing and literature. It would be more appropriate to evaluate this work as a result of the aestheticization of the historical narrative which Ranke sought after within the body of works he produced in his middle age. (Korea University / hchoi21@korea.ac.kr)