자발성 척수내혈종 - 증례보고 -

황정현,성주경,황성규,함인석,박연묵,김승래,Hwang, Jeong Hyun,Sung, Joo Kyung,Hwang, Sung Kyoo,Hamm, In Suk,Park, Yeun Mook,Kim, Seung Lae 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.3

Hematomyelia is an extremely rare condition that cause severe neurological symptoms. We reported 4 cases of spontaneous hematomyelia, two cases of cavernous angioma and two cases of hematoma. In all patients, the clinical course was progressive ; motor and sensory abnormalities below the lesion and voiding difficulties were the common presenting symptom complex. The preoperative diagnosis was made by magnetic resonance imaging and the all patients underwent surgical exploration. Complete removal of hematoma was done in 3 patients and complete evacuation after aspiration of hematoma were performed in one patients. Neurological function did not worsen postoperatively in any patients. The early diagnosis with magnetic resonance imaging and immediate surgical treatment of the hematoma and the associated vascular malformation are considered to be the best way to halt the progression of the disease.

뇌동맥류 수술후 병발된 단순 뇌수종과 단락술이 요하는 뇌수두증

황정현,전태형,함인석,Hwang, Jeong-Hyun,Jeon, Tae-Hyung,Hamm, In-Suk 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.2

Objectives : A postoperative hydrocephalus is compromises the clinical outcome of patients with aneurysmal clippings as one of the major complications of SAH. Subdural hygroma is often complicated after aneurysmal clippings, which subsides spontaneously as simple hygroma, or progresses to shunt-dependent hydrocephalus (SDHC). To predict development of SDHC from the hygroma, and to improve clinical outcome of patients with aneurysmal clippings, we analyzed clinical predisposing factors between 2 subgroups, simple hygroma and SDHC. Patients and Methods : A retrospective study of 232 consecutive cases of clipped aneurysmal patient was undertaken in our hospital for last two years. The 46 patients(19.8%) developed hygromas after aneurysmal clippings. There were 22 cases with simple hygroma(9.5%), and 24 patients with SDHC(10.3%). Comparison of 2 subgroups was made for various clinical and radiological factors. Results : Older age(p=0.03), poor preoperative clinical grade(p=0.01), high Fisher grade(p=0.005), large amount of hygroma(p=0.014) and increased size of lateral ventricle ipsilateral to hygroma(p=0.001) were correlated significantly with SDHC. There was no statistical significance in sex, aneurysmal location and presence of acute preoperative ventricular dilatation between 2 subgroups. Conclusion : The clinical factors, such as older age, poor preoperative clinical grade, high Fisher grade, large amount of hygroma and increased size of lateral ventricle ipsilateral to hygroma showed statistical sinificance for differentiating SDHC from simple hygroma.

7,7,8,8-Tetracyanoquinodimethane를 활용한 고투과성 올레핀 촉진수송 나노복합체 분리막 제조 및 특성 분석

황정현,이은용,강상욱,Hwang, Jeonghyun,Lee, Eun Yong,Kang, Sang Wook 한국막학회 2014 멤브레인 Vol.24 No.6

본 연구에서는 Poly(ethylene oxide) (PEO)/Ag Nanoparticles (NPs)/7,7,8,8-Tetracyanoquinodimethane (TCNQ) 분리막 시스템을 제조하여 기존의 PEO/Ag NPs/p-Benzoquinone (p-BQ) 복합체 분리막보다 더 향상된 성능을 보이는 고투과성올레핀 촉진수송 나노복합체 분리막을 얻고자 하였다. 고분자 지지체 PEO와 은 나노 입자 전구체 $AgBF_4$는 1 대 0.4 몰비로 고정하고 전자 수용체인 TCNQ 함량은 다양하게 조절하였으며 1/0.4/0.004 몰비에서 가장 높은 올레핀 분리막 성능을 확인하였다. 따라서 이 비율에서 long-term test를 진행하였고 초반에는 투과도 약 23 GPU, 선택도 약 6 (프로필렌/프로판)의 수치를 보였으나 32시간 만에 투과도는 약 6 GPU, 선택도는 약 2 (프로필렌/프로판)로 감소하는 것을 확인하였다. The poly(ethylene oxide) (PEO)/Ag Nanoparticles (NPs)/7,7,8,8-Tetracyanoquinodimethane (TCNQ) membrane was fabricated to obtain highly permeable facilitated olefin transport nanocomposite membrane, compared with PEO/Ag NPs/p-Benzoquinone (p-BQ) membrane. Polymer matrix, PEO and silver nanoparticle precursor $AgBF_4$ were fixed at 1 : 0.4 mole ratio and electron acceptor TCNQ content was controlled variously. And the best olefin separation performance was obtained at 1/0.4/0.004 mole ratio, and long-term separation performance was measured at this ratio. As a result, mixed-gas permeance decreased from 23 to 6 GPU, and selectivity decreased from 6 to 2 (propylene/propane) after 32 hours.

온실가스배출 감소와 연료절감을 위한 최적 운용절차 방안에 관한 연구

황정현,이태광,황사식,Hwang, Jeong-Hyun,Lee, Tae-Gwang,Hwang, Sa-Sik 한국항공운항학회 2013 한국항공운항학회지 Vol.21 No.4

As the aviation industry looks to the future, fuel saving and $CO_2$ emission reduction play a dominant role in meeting the business challenges presented by global financial uncertainty. The IATA and International Government effort to save fuels, and then save 4 billion gallons of fuel burned, while reducing $CO_2$ emissions by 34 million tons. The various reduction methods adapted airlines and airports. We focused on optimized flight operation procedures for saving fuel and reduction emission cases. IATA and Canada government research reports focused on four methods that Engine Core Washing, Portable Water Management, Single Engine Taxi, APU limit operation. Apply to domestic airlines fuel data, Engine Core washing was saving more than Twenty-four thousand tons $CO_2$ emissions.

DUCK's Science - 친환경 시대의 대비 항생제에 대한 기본 지식과 적용 원칙

황정현,Hwang, Jeong-Hyeon 한국오리협회 2010 오리마을 Vol.90 No.-

무항생제 오리 시대의 대비 - 성장 촉진용 항생제의 역할과 사용 금지의 영향

황정현,Hwang, Jeong-Hyeon 한국오리협회 2010 오리마을 Vol.88 No.-

오리와 면역

황정현,Hwang, Jeong-Hyeon 한국오리협회 2010 오리마을 Vol.87 No.-

스포츠에서 분노의 정당성에 관한 아리스토텔레스주의적 접근

황정현 ( Hwang¸ Jung-hyun ) 한국체육학회 2021 한국체육학회지 Vol.60 No.1

본 연구는 아리스토텔레스의 『니코마코스 윤리학』을 중심으로 스포츠사회에서 운동선수가 지닌 분노의 정당성을 확보하고자 하는데 목적이 있다. 분노의 감정에 대한 현대사회의 부정적 통념은 스포츠사회에 그대로 반영되어 있다. 스포츠사회의 규범은 선수에게 분노를 허락하지 않는다. 화가 나는 상황에서 화를 내기보다는 그것을 참는 것이 스포츠맨이 지녀야 할 미덕이며, 이는 곧 훌륭한 선수의 근본이 된다. 그러나 아리스토텔레스의 중용사상은 스포츠에서 분노의 도덕적 수용가능성을 제시한다. 이에 따라, 합리적인 이성적 판단에 의해, 마땅히 분노해야 되는 상황에서, 마땅하게 분노하는 유덕한 선수는 스포츠사회의 정의 구현을 위한 윤리적 주체로서 칭찬의 대상이 된다. 이와는 달리 분노해야 될 때 분노하지 못한 선수는 자존감이 상실되어 존재성을 확립하지 못한 어리석은 사림으로 평가된다. 따라서 스포츠맨십이 강한 도덕적 규범이 되는 스포츠사회에서 중용이 전제된 선수의 분노는 ‘훌륭한 선수’에 대한 조건과 더불어 정의로운 스포츠사회 구현에 대한 인과성을 구명할 수 있는 변인이 될 것으로 판단된다. The purpose of this study was to secure the legitimacy of the anger of player in the sports society, focusing on Aristotle’s 『Nicomachean Ethics』. The negative conventional perspective of modern society about the feeling of anger is reflected in the sports society as it is. The norms of the sports society do not allow anger to an athlete. It is a virtue of a sportsman to be patient rather than to be angry in an angry situation, which is the foundation of a good player. However, Aristotle’s thought suggest the moral acceptability of anger in sports. Accordingly, a virtuous player who deserves anger in a situation where he deserves anger through rational judgment becomes the object of praise as an ethical subject for realizing justice in a sports society. A player who is not angry, on the contrary, when he has to be angry is evaluated as a foolish man who cannot establish his existence due to the loss of his self-esteem. Therefore, the anger of a player, premised on moderation in a sports society where sportsmanship is a strong moral norm, is considered to be a variable that can investigate the causality of realizing a just sports society as well as the condition for a ‘good player.’

스포츠의 미적 가능성

황정현(Hwang Jung-hyun) 한국체육철학회 2016 움직임의철학 : 한국체육철학회지 Vol.24 No.4

To suggest an answer over the question, is sport art or not, which has been ambiguous in the philosophy of sport, I focus on the aspect of aesthetic background in this article. The most important factor for the purpose of the performance in art is about beauty but it is the secondary one in sport. The quantitative judgement which is estimated result of performance through the numbers such as world records, ranking, winning or losing of game is more preferential than aesthetic judgement in sport. In addition, perfection of the skills during the competitive game is related to esthetic merit and esthetic quality. The aesthetic potential, therefore, is defined as the resonable background to discuss about artistic character in sport. In this viewpoint, the skill done by athletes in the game is not only the outcome of repeating hard training like any machines but is that the basis to reestimate the definition of sport if it has esthetic judgement which could judge sport with these terms,“it is art or graceful or great.”

1920년대 『로숨의 유니버설 로봇』의 수용 연구

황정현 ( Jung Hyun Hwang ) 현대문학이론학회 2015 現代文學理論硏究 Vol.0 No.61

이 논문은 카렐 차페크Karel capek의 희곡 「로숨의 유니버설 로봇Rossum`s Universal Robots(이하 R.U.R.이라 칭한다)」이 1920년대 국내에 수용된 양상을 고찰하고 시대적 의미를 찾고자 한다. 『R.U.R.』은 오늘날 과학 분야를 넘어 일상의 기본 개념 중 하나가 된 ‘로봇’이라는 용어를 처음 등장시킨 작품으로, 1923년 이광수에 의해 처음 국내에 소개된 이후 김기진, 박영희, 김우진 등 당대의 대표적인 문인들에 의해 재차 번역 또는 비평의 대상이 되었다. 이들은 『R.U.R.』 이해와 수용에 있어 상이한 방식과 관점을 취하는데, 이는 각자의 시대인식과 문학적 태도가 반영된 결과이다. 김기진과 박영희는 자신들이 주장한 프로문학의 맥락에서, 『R.U.R.』의 로봇과 인간을 각기 노동자와 자본가로 치환하고, 이 작품이 노동 계급 혁명의 승리를 그리고 있다고 보았다. 이에 따라 원작의 플롯과 인물의 성격은 역술 과정에서 선택, 변형된다. 박영희의 역술 「인조인간에 나타난 여성」은 작품의 플롯을 취사선택하고 여성인물의 성격을 해석하는 과정에서 ‘비 노동 계급’과 ‘여성’에 대한 이중의 계몽 의식을 보여준다. 이광수와 김우진은 이 작품이 근대기술문명에 대한 비판을 담고 있다고 보았지만, 구체적인 이해의 내용은 상반된다. 이광수는 「인조인」 역술에서, 인간의 내적 수양을 통해 로봇의 지배가 상징하는 물질문명에서 벗어날 수 있다고 주장했다. 이러한 이해는 훗날 ‘상의 문학’을 주장한 그의 문학관과 상통하는 것이지만, 사회 구조의 문제를 개인의 차원으로 치환하였다는 점에서 한계를 지닌다. 반면 김우진은 일련의 평론에서 예술이 철저한 시대인식과 투쟁 의지를 담아야 한다고 주장하면서, 『R.U.R.』이 자본주의와 군국주의의 결탁 하에 발생하는 근대기술문명의 폐해를 잘 보여준다고 평가한다. 차페크와 『R.U.R.』에 대한 그의 평론들은, 차페크에 대한 깊이 있는 이해를 담고 있으면서, 동시에 당대 조선 문학에 대한 그의 비판적 견해와 확고한 문학관을 보여준다. 1920년대 『R.U.R.』의 수용 양상은, 식민지 경제구조에서 근대기술문명과 자본주의의 도입이라는 급격한 변화를 맞닥뜨려야만 했던 당대 문학 담당층의 시대인식과 고민을 집약적으로 보여주고 있다. This paper traces the context in which the Korean translation of Karel capek`s play Rossum``s Universal Robots (R.U.R. hereafter) was introduced and received in Korea of the 1920s, and also examines the contextual significance of the afore-mentioned phenomena. R.U.R. is the work where the term "robot", which has become a familiar concept frequently used in everyday life not restricted in the science filed, appeared for the first time. First introduced by Yi Kwang-soo in 1923, this play was translated by representative Korean men of letters of the time, such as Kim Gi-jin, Park Young-hee, and Kim Woo-jin, becoming the subject of criticism. The men of letters above take different methods and perspectives in the reception of R.U.R., which reflects each man of letters` unique recognition of the time and literary attitude. Kim Gi-jin and Park Young-hee, in the context of proletarian literature, identify robots with workers, and humans with capitalists in the play. As a result, the plot and the characters of the original text are selected and deformed in their work. Especially Park Young-hee`s Women Who Appear in the Android, in the course of interpreting the personality of women characters "non-working class," shows the double enlightenment awareness of the "female" and a "non-working class". Yi Kwang-soo and Kim Woo-jin regard that this play includes a criticism of the modern technology and civilization, but the specific contents of their understanding is contradictory. Yi Kwang-soo insists that the human being can get out of the material civilization, which is symbolized by the rule of robots, through the internal discipline. This idea has a limit in that it reduces the problem of social structure to the personal dimension. On the other hand, Kim Woo-jin, while claiming that art must have a through recognition of the time and strife consciousness, says that R.U.R. shows well the evil originated in the collusion of capitalism and militarism. Kim Woo-jin`s critical comments on Capek and R.U.R. displays not only deep understanding of the play, but also expresses his critical opinion and perspectives on Korean literature in the current days. In conclusion, the Korean reception of R.U.R. in the 1920s intensively illustrates the concerns and recognition of time shared by the contemporary Korean literary mens who were faced with the radical changes, that is, the introduction of modern technological civilization and the capitalism.