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      • SCOPUSKCI등재

        흑연에 황산을 Intercalation 시킬때의 Mechanism 규명 (I. 전기적 산화방법에 의한 Graphite Salts의 중간상에 관한 연구)

        고영신,한경석,이풍헌 한국세라믹학회 1985 한국세라믹학회지 Vol.22 No.6

        Graphite has been oxidized to graphite hydrogen sulfate in concentrated $H_2SO_4$. Anodic oxidation and chemical oxidation of graphite in $H_2SO_4$ generally leads to the formation of intercalation compounds of the ionic salt type through incorporation of $H_2SO_4^-$ions and $H_2SO_4$ molecules into the graphite. Several other reactions also accur at various points of the charging cycle. But there is no satisfactory kinetics and mechanism of intercalationin graphite. We have studied them with anodic oxidation and chemical oxidation. We found six distinct phenomena between 2nd stage and 1st stage in chemical oxidation. We examined them in detail by the following in the measurements electrical oxidation. X-ray diffractions UV-Vis spectroscopy density measurements. We could obtained a equation for kinetic according to the reaction rate from this results and mechanism of intercalation between 2nd stage and 1st stage with hydrogen sulfate in graphite. Three thesis were written for the mechanism of intercalation compounds in graphite with hydrogen sulfate ; first thesis is anodic oxidation second thesis is chemical oxidation and definition of transit phase between 2nd etc the third thesis is the kinetic mechanism of intercalation compounds in graphite with Hydrogen sulfate. This thesis is the first paper among three thesis as anodic oxidation.

      • KCI등재

        시사만화의 정치적 의제 설정과 프레임 구성에 대한 연구

        고영신 사단법인 언론과 사회 2008 언론과 사회 Vol.16 No.2

        The purpose of this study is to examine one-cut satirical cartoons in central dailies during the 17th presidential election campaign to perform empirical investigation of how editorial cartoons are constructing political meanings in the election situation. For this purpose, this study set four themes: agendas of editorial cartoons, frequency of candidate appearance and tendency of describing candidates in terms of agendas, characteristics of thematic frames for editorial cartoons, and differences by dailies. The newspaper publishing companies selected for analysis were Kyunghyang Newspaper, Kookmin Ilbo, Seoul Newspaper, Chosun Ilbo, Hankook Ilbo, and Hangyeore Newspaper in which one-cut editorial cartoon was inserted on the regular basis. During the period of the analysis, editorial cartoons run in the six kinds of newspapers were all collected for quantitative and qualitative analyses. As a result, first, editorial cartoons in the press was an important means of communication to abstract characters, images, electorial campaigns, and issues of presidential candidates through brief metaphorical expressions and to provide readers with a frame containing a certain theme. Second, editorial cartoons served as a mechanism to set an externally similar agenda, form a thematic frame, and test and monitor power (candidates) like general news reports in the electoral situation. Third, candidates in the running primarily appeared in editorial cartoons and there were mainly negative descriptions both in conservative and progressive ones in terms of tendency for description. Fourth, a certain candidate was strongly correlated with intimate relations based on political inclination and ideological homogeneity of individual dailies, which was found to affect the intensity of criticism of candidates, attitudes in description, and frequency of candidate appearance. In conclusion, the Korean press recovered freedom of coverage at the advanced-nation level, but still failing to be freed completely from the regressive practice of close relationship or symbiotic relations between power and the press. 본 연구는 17대 대선기간 중 중앙 일간신문에 게재된 한 컷짜리 신문만평을 중심으로 시사만화가 선거 국면에서 어떻게 정치적 의제를 설정했는지를 실증적으로 규명하는 데 목적이 있다 이에 따라 본 연구는 시사만화의 의제, 의제별 후보자 등장빈도 및 후보자에 대한 묘사성향, 시사만화의 주제프레임 및 언론사별 차이점 등 4개의 연구 문제를 설정했다. 분석대상 신문사는 한 컷짜리 시사만화를 게재하고 있는 <경향신문>, <국민일보>, <서울신문>, <조선일보>, <한국일보>, <한겨레>를 선정했다. 분석대상 기간 중 6개 신문에 게재된 만평을 모두 수집해 양적, 질적 분석을 실시했다. 연구결과 첫째, 우리 언론의 시사만화는 간결한 은유적 표현을 통해 대선후보의 캐릭터와 이미지, 선거캠페인과 이슈를 축약하고, 특정한 주제를 담은 프레임을 독자들에게 제공하는 중요한 정치커뮤니케이션 수단이 되고 있는 것으로 나타났다. 둘째, 시사만화가 선거 국면에서 외관상 유사한 의제를 설정하고 주제프레임을 구성, 일반뉴스보도와 마찬가지로 권력 (후보자)에 대한 검증과 감시기제로 작용했다. 셋째, 당선 가능성이 높은 후보가 주로 시사만화에 등장했으며, 후보자 묘사성향은 보수, 진보성 향의 신문을 불문하고 부정묘사가 주류를 이뤘다. 넷째, 특정후보와 개별 언론사의 정치적 성향, 이념적 동질성을 바탕으로 한 친소관계 간에는 밀접한 상관관계가 있으며 이것이 후보자에 대한 비판의 강도 묘사태도 후보자 등장빈도 등에 영향을 미친 것으로 나타났다. 결론적으로 우리 언론이 선진국 수준의 취재보도 자유를 회복했지만 여전히 권언유착 내지 공생관계라는 퇴행적 관행에서 완전히 탈피하지 못한 것으로 밝혀졌다.

      • KCI등재후보

        탄소 및 질소 안정동위원소를 활용한 어류 가두리 양식장 내 퇴적 유기물의 기원 및 기여도 평가

        고영신,이대인,김청숙,심보람,김형철,이원찬,이동헌 한국하천호수학회 2022 생태와 환경 Vol.55 No.2

        We investigated physicochemical properties and isotopic compositions of organic matter (δ13CTOC and δ 15NTN) in the old fish farming (OFF) site after the cessation of aquaculture farming. Based on this approach, our objective is to determine the organic matter origin and their relative contributions preserved at sediments of fish farming. Temporal and spatial distribution of particulate and sinking organic matter(OFF sites: 2.0 to 3.3 mg L-1 for particulate matter concentration, 18.8 to 246.6 g m-2 day-1 for sinking organic matter rate, control sites: 2.0 to 3.5 mg L-1 for particulate matter concentration, 25.5 to 129.4 g m-2 day-1 for sinking organic matter rate) between both sites showed significant difference along seasonal precipitations. In contrast to variations of δ13CTOC and δ15NTN values at water columns, these isotopic compositions (OFF sites: -21.5‰ to -20.4‰ for δ13CTOC, 6.0‰ to 7.6‰ for δ15NTN, control sites: -21.6‰ to -21.0‰ for δ13CTOC, 6.6‰ to 8.0‰ for δ15NTN) investigated at sediments have distinctive isotopic patterns(p<0.05) for seawater-derived nitrogen sources, indicating the increased input of aquaculture-derived sources (e.g., fish fecal). With respect to past fish farming activities, representative sources(e.g., fish fecal and algae) between both sites showed significant difference (p<0.05), confirming predominant contribution (55.9±4.6%) of fish fecal within OFF sites. Thus, our results may determine specific controlling factor for sustainable use of fish farming sites by estimating the discriminative contributions of organic matter between both sites.

      • KCI등재

        Cytomorphological Findings and Histological Correlation of Low-Grade Cribriform Cystadenocarcinoma of Salivary Gland in Fine-Needle Aspiration: A Case Study

        고영신,구자승 대한병리학회 2013 Journal of Pathology and Translational Medicine Vol.47 No.6

        Low-grade cribriform cystadenocarcinoma (LGCCC) of the salivary gland is a rare tumor. We report the cytologic features and histologic correlation of a patient with LGCCC. A 57-year-old man had a hardly palpable, nontender mass in the right cheek area followed over nine months. Radiologic analysis revealed a 1.2 cm multiseptated, cystic, solid nodule in an anterior superficial lobe of the right parotid gland. Fine-needle aspiration cytology revealed many irregular overlapping sheets or clusters of ductal epithelial cells forming solid, pseudopapillary, and cribriform architectures. Nuclei of the tumor cells revealed inconspicuous atypia with minimal size variation. On the basis of these findings, we confirmed a diagnosis of ductal epithelial proliferative lesion, favoring neoplasm, with uncertain malignant potential. Tumor excision was performed, revealing a tiny multicystic nodule (0.7 cm). Histopathologically, this tumor showed the characteristic morphology of LGCCC. This is the first report of cytomorphological findings of LGCCC in Korea.

      • SCOPUSKCI등재

        흑연에 황산을 Intercalation 시킬 때의 Mechanism 규명 (II. 화학적 방법에 의한 Graphite Salts의 중간상에 관한 연구)

        고영신 한국세라믹학회 1988 한국세라믹학회지 Vol.25 No.4

        This thesis is 2nd thesis from "Mechanism of Intercalation Compounds in Graphite with Hydrogen sulfate(J. Korea Cer. Soc. Vol. 22. No.6, 1985). We have oxidized natural Graphite flakes(0.1~0.2mm., Kropfm hl passau in Deutchland. S40) with a solution of CrO3 in H2SO4. Whilst persulfate ions were intercalated, too, below 7$^{\circ}C$, no evidence for intercalation of a peroxo compound was found at 22$^{\circ}C$. The reaction was interrupted after various times by filtering and washing with concentrated H2SO4. X-ray diffraction showed that the 2nd stage compound had already been formed after 2 minutes. We could only follow further oxidation to the blue stage compound which was completed after 35 minutes. We have found six distinct intermediate stage between 2nd stage and 1 stage. Experiments are described on the formation of intermediate stage color and X-ray diffraction analysis.ysis.

      • 한강변 점토에 포함된 SiO_2 함량분석에 관한 연구 : 혼합물의 분리(4-2)단원과 관련하여 On the unit of "The Separation of Compound" (4-2)

        高永信 서울교육대학교 과학교육연구소 1990 科學과 數學敎育 論文集 Vol.16 No.-

        本 硏究는 화학 분석 시험이라는 점토 성질 조사 시험방법을 사용하여 도자기, 내화물 뿐만아니라, 여러가지 신소재의 원료로 이용되는 점토를 성분 분석해 냄으로써 점토내의 H_2O, SiO_2, Al_2O_3 및 기타원소, 유기물, 불순물의 함량을 알아보고, 이 실험의 과정을 통해 얻은 지식을 '혼합물의 분리' 단원에서 효과적으로 活用할 수 있는 방법을 提示해 보도록 하겠다. This study aim's at investigating the content ratio of H_2O, SiO_2, impurities, organic matters, Al_2O_3, and some other element included in clay, which is widely used as the raw material of the ceramic ware, fireproof material and other new materials nowadays, through the chemical analysis of the property of clay and then applying the results of the study to the science education of "the separation of compound" in the second term of fourth grade in elementary school.

      • 초등 학생의 공기 입자에 대한 개념 조사 연구

        고영신,최영재,조재룡,이종화 서울교육대학교 과학교육연구소 1999 科學과 數學敎育 論文集 Vol.25 No.-

        The purpose of the study is to present teaching strategies by surveying types and tendency of elementary school students' concept about air particles. The objects of the study consisted of 455 students. 104 students of three classes in 5th grade and 112 students of three classes in 6th grade were from an urban elementary school in Seoul. 119 students of three classes in 5th grade and 120 students of three classes in 6th grade were from a rural elementary school in Yongin area. The result of the survey was shown as follows. First, the students level of concept formation is 48.9%. The level of concept formation in simple concept appeared and higher than in developed and adopt concepts. They showed very low level of concept formation in the questions about microscopic phenomena such as 'distance between particles', 'distribution of particles', 'space between particles'. They have the misconception from trying to misinterpret microscopic phenomenon as macroscopic phenomenon. 55.2% of students have a misconception that primary component of air consist of oxygen and dioxide. The misconception can be inferred from learning. There was no mention on nitrogen at curriculum which deals with mostly oxygen and dioxide. 52.5% of students respond that there was no space between air particles. This resulted from interpreting microscopic phenomenon in macroscopic view. Second, in the comparison of concept level according to the grade, 6th grade students(55%) showed 8% higher concept formation level than 5th grade students(43%). 6th grade students showed higher and meaningful difference (p<0.00-0.01) in 4 areas in concept formation and there's overall meaningful difference at p<0.00 level. Third, in the comparison of concept level according to sex, male students(49%) showed 2% higher than female students(47%) in concept formation. But there was no area in which showed meaningful differences. (p=0.32) Forth, between urban and rural students, scientific concept level of urban students was 49% and 48% for rural students. Urban students' level was higher than rural students in three areas of 'general concepts of air', 'distance between particles', and 'kinetic energy of particles'. With total conceptual level of all areas, urban students' level was a bit higher than rural students'. But the difference was insignificant statistically. (p=0.46)

      • VTS 관련법규 보완의 필요성

        고영신,이남열,김현성 한국항해항만학회 2011 한국항해항만학회 학술대회논문집 Vol.2011 No.춘계

        해상교통관제제도는 공익을 위하여 행하는 능동적이고 적극적인 국가작용으로, 법률에 근거하여 시행하여야 한다. 하지만, 근거가 되는 법률이 부재하거나 미흡하여 여러 문제점들이 발생하고 있다. 본 논문에서는 이러한 미흡한 법률과 이로 인한 문제점들을 고찰하고 개선방안을 마련하고자 한다.

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