미들웨어의 현황 및 전망

장석원,Jang, Seok-Won 한국컴퓨터사용자협회 2006 The USERS Vol.49 No.-

비틀림하중을 받는 기계구조물의 ESPI를 이용한 면내변위 측정에 관한 연구

장석원,이학주,최은오,정찬희,Jang, Seok-Won,Lee, Hak-Ju,Choe, Eun-O,Jeong, Chan-Hui 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.4

Recently, the mechanical structures applied to many industrial products, especially in electronic products, appear to be miniaturized and complicated. This trend makes it difficult to analyze the stress distribution of those mechanical structures and generates new challenges for precise measurement of strain. In order to solve this measurement problem many optical measurement techniques have been suggested. Among those, the ESPI(Electronic Speckle Pattern Interferometry) has been considered as one of the most useful tools. But the shortage of recognition and difficulties of measurement have limited its industrial applications in spite of its excellent capabilities. Therefore in this study, not only the verification of the FEA result but the enhancement of industrial application of ESPI was tried by measuring the in-plane displacement of mechanical structure with ESPI, which is difficult to be measured with strain gauge.

3기 위암 환자의 술 후 생존율 및 예후 인자 분석

장석원,김치호,김상운,송선교,Jang Seok-Won,Kim Chi-Ho,Kim Sang-Woon,Song Sun-Kyo 대한위암학회 2004 대한위암학회지 Vol.4 No.3

Purpose: There have been some controversies over the therapeutic principles of advanced gastric cancer, and the results of treatment have been variable, especially for stage III disease. This study was conducted to define the prognostic factors of stage III gastric cancer. Materials and Methods: This retrospective study was based on the medical records of 179 patients with stage III disease who received a gastrectomy from January 1990 to December 1994. The 5-year survival rate was analyzed according to the age, sex, tumor location, tumor size, Borrmann's type, depth of invasion, lymph-node metastasis, ratio of metastatic lymph nodes, type of surgical resection, extent of lymphnode dissection, curability of resection, postoperative chemotherapy, and pathological stage. The statistical analysis was done by using the Kaplan-Meier method, the log-rank test, and the Cox proportional hazards model. Results: The overall 5-year survival rate was $61.6\%$ the 5-year survival rates according to subgroup were $69.7\%$ for stage IIIa ($100\%$ for $T_{2}N_{2}$, $70.0\%$ for $T_{3}N_{1}$, $68.6\%$ for $T_{4}N_{0}$), and $54.1\%$ for stage IIIb ($T_{3}N_{2}$) (P<0.05). Among various clinicopathologic factors of stage III gastric cancer, the age of the patient, the tumor location, the gross type of tumor, the type of gastric resection, the extent of lymph-node dissection, the curability of resection, and the subgroups of stage III were statistically significant in the univariate survival analysis. The multivariate analysis defined the curability of resection, the extent of lymph-node dissection, the type of operation, the stage of disease, and the age of the patient as independent prognostic factors. Conclusion: A curative surgical resection and an extended lymph-node dissection are thought to be most important for improving the survival rate in stage III gastric cancer patients.

『徽文』의 李泰俊

장석원(Jang Seok-won) 고려대학교 한국학연구소 2009 한국학연구 Vol.31 No.-

휘문고보의 교지 『徽文』의 가치는 많은 학교 간행물 중에서도 독보적이다. 『휘문』은 저명한 사학의 재학생들이 제작한 교지라는 점과 방대한 양이 온전하게 보존되었다는 점을 넘어서는 중요성을 지닌다. 『휘문』에는 한국 근현대 문학의 중요 작가들의 학창 시절 글이 다양하게 게재되어 있다는 점 때문에, 문학사 자료로서의 가치가 매우 크다. 약 20여년간 발행되어 총 18호가 전해지는 양적 측면에서, 한국 현대문학의 중요 작가들인 이태준, 정지용, 오장환, 이병기, 박노갑 등의 번역물과 습작기 작품이 다수 게재되어 있다는 자료사적 가치 측면에서 『휘문』의 중요성이 부각된다. 특히 이태준의 전집이나 연구 자료에 수록되지 않았던 『휘문』 제1호에 실린 두 글을 발굴한 것은 이 연구의 성과이다. 교지 『휘문』에 가장 많은 글을 게재한 작가는 이태준이다. 본격적인 소설가로서의 길을 걷기 이전에 이태준이 남긴 글을 통해 향후 이태준의 문학적 특성의 맹아를 검출할 수 있다는 점에서 이태준의 학창 시절 글은 큰 의의를 지닌다. 텍스트로 발표가 된 글은 그것이 문학적 완성도를 논할 수 없는 습작기의 작품이라고 해도 무시할 수는 없다. 공식적인 매체에 글을 싣는다는 행위는 문학 행위라는 자의식이 없다면 이루어질 수 없었을 것이다. 글을 통해 자신을 표현한다는 점에서 학창 시절의 글에 대한 자료 정리 및 연구는 이태준 문학의 전체적인 면모를 보다 확실히 하는데 기여할 것이다. 또한 이태준이 남긴 전체 글을 자료로 확보하여 전집의 완결에 도움이 된다는 점 때문에도 『휘문』에 실린 이태준의 글이 갖는 의의는 중요하다. 학생 시절에 썼던 글을 통해 이태준이 한문에 깊은 소양을 지니고 있었음을 확인할 수 있다. 이태준이 자신의 소설이나 수필에서 보여준 상고 취미, 골동 애호 경향은 학창 시절부터 싹트고 있었다. 능수능란한 한문 표현, 당대 청년 학생들의 이념적 지향이 응축된 사고의 전개 등이 이태준의 발굴 자료에서 확인된다. Hwimoon, a school magazine of Hwimoon Gobo(Hwimoon Highschool) is unrivaled among school publications. It has an importance more than that prominent students edited, most of it is well preserved. Its value as an important document for Korean literary history is in that works of major writers of Korean modern literature are appeared in it. Also, Hwimoon is of great value because it had been published for about 20 years and 18 issues are remained, and major writers' translations and early writings of Korean modern literature such as Lee tae-joon, Jeong Ji-yong, Oh Jang-hwan, Lee Byeong-gi, Park No-g'ap are appeared in it. Specially, during this research, two writings of Lee Tae-joon, not included in his complete works or research materials are found in the first issue of Hwimoon. Lee Tae-joon published his writings in Hwimoon more than any other writers. His writings in his school days have significant meaning in that his sprout of literary characteristics could be detected from his writings before he took the course as a novelist. Though they were written in his early years and therefore it is difficult to discuss their completion as a literary work, one should not disregard writings published as a text. Publishing one's works in official media cannot be done without a writer's self-awareness that he or she is participating in literary activities. This research of arranging and studying Lee Tae-joon's works in his school days will contribute to the clarification of overall aspects of his literature because writers express themselves through writings. Also, writings of Lee Tae-joon published in Hwimoon have a great importance in that they will be of help to secure all works by Lee Tae-joon and finish his complete works. Lee Tae-joon was well-grounded in Chinese Writing. His respect for tradition and love for antiques expressed in his novels and essays had began to sprout from his school days. His outstanding expressions in Chinese Writing and the development of thought in which ideological inclination of young students of that period is condensed are confirmed in his writings unearthed during this research.

Trimethyltin에 의한 랫드 해마의 신경세포 사멸과 iNOS의 연관성

장석원,최성영,박창남,안미정,신태균,김승준,Jang, Sukwon,Choi, Sungyoung,Park, Changnam,Ahn, Meejung,Shin, Taekyun,Kim, Seungjoon 대한수의학회 2011 大韓獸醫學會誌 Vol.51 No.3

Trimethyltin chloride (TMT) has been used as a neurotoxin for inducing brain dysfunction and neuronal death. Neuronal death in the hippocampus by TMT may generate excessive nitric oxide, but there are few studies about nitric oxide synthase enzyme involved in the synthesis of nitric oxide. The purpose of present study is to analyze the TMT toxicity in each region of rat hippocampus. To evaluate the involvement of nitric oxide, we analyzed the effects of aminoguanidine known as a selective inhibitor for inducible nitric oxide synthase on behavioral changes and the hippocampus of rat by TMT toxicity. 6-week-old male Sprague-Dawley rats were administered with a single dose of TMT (8 mg/kg b.w., i.p.) and the control group was similarly administered with distilled water. TMT + aminoguanidine-treated groups were administered with aminoguanidine (10 mg/kg or 100 mg/kg b.w., i.p.) for 3 days prior to TMT injection. The rats were sacrificed 2 days after TMT administration. In the TMT-treated group, a number of cell losses were seen in CA1, CA3 and the dentate gyrus. In the TMT + aminoguanidine-treated group, neuronal death was seen in CA1 and CA3, but reduced in the dentate gyrus compared to the TMT-treated group. Western blot analysis showed that cleaved caspase-3 expression was increased in the TMT-treated group compared to the control group. However, the expression significantly declined in the TMT + aminoguanidine-treated group. The present findings suggest that inducible nitric oxide synthase is involved in neuronal death induced by TMT.

자동측지장비를 이용한 표적 측지 오차해석

장석원,이태규,이진승,Jang, Sukwon,Lee, Taegyoo,Lee, Jinseung 한국군사과학기술학회 2015 한국군사과학기술학회지 Vol.18 No.1

In this paper, we have described target positioning of automatic survey system. Target positioning error analysis shows target positioning errors are mainly dependent on the vertical angle of the triangle configured by target and two measurement points. Suggested target positioning error formula are confirmed by simulation using the Gaussian distribution.

CVM을 이용한 고도정수처리의 경제적 효과 분석

장석원,김상문,Jang, Seok Won,Kim, Shang Moon 한국수자원학회 2015 한국수자원학회논문집 Vol.48 No.9

본 논고는 고양 정수장과 구미 정수장으로부터 물을 공급받고 있는 5개 도시(고양, 파주, 구미, 김천, 칠곡)를 대상으로 고도정수처리 도입의 경제적 편익을 평가하였다. 지불가능금액(WTP) 추정을 위한 방법으로는 이중경계 양분선택형 CVM을 이용하였다. 특히 평균 WTP 추정값을 도출하기 위한 방법으로 모수 추정법 중 구간 데이터(interval-data) 모델을 이용하였다. 고도정수처리서비스에 대한 추가 지불 WTP(평균)는 공변량을 포함한 모델을 적용하였을 경우 톤당 231.3원이, 공변량을 포함하지 않은 모델을 적용하였을 경우에는 231.2원인 것으로 추정되었다. 한편 추정된 WTP와 함께 고양 및 구미 정수장으로부터 공급받는 수돗물 공급량(각각 59.675 백만$m^3$/년, 93.734 백만$m^3$/년)을 고려하여 정수장별 고도정수처리의 경제적 편익을 도출한 결과 고양정수장은 약138억 원/년이, 구미정수장은 16.8억 원/년으로 추정되었다. 그리고 설비의 내구연한을 10년으로 가정할 경우, 비용 대비 편익 비율은 고양정수장이 3.7, 구미정수장이 2.1로 조사되었다. 수도사업 관련 고도정수처리 도입은 공공사업의 한 유형으로, 이는 경제적 편익 및 비용이 동시에 고려되어야 할 정책적 사업이다. 이러한 의미에서 본 연구의 산출물인 고도정수처리의 WTP는 정책결정자의 수질개선 관련 의사결정에 기초 자료가 될 것이다. This paper attempts to measure the economic benefits of advanced water treatment in five cities (Goyang, Paju, Gumi, Gimcheon, Chilgok), which are supplied water from Goyang and Gumi filtration plant. We used the dichotomous choice contingent valuation method to estimate WTP. Parametric interval-data model are used to obtaining the mean WTP estimates. The results show that the mean of additional WTP for advanced water treatment services were estimated to be KRW 231.3 and KRW 231.2 per $m^3$ using model with covariates and without covariates, respectively. Given the water supplies of Goyang and Gumi filtration plants ($59.675m^3/y$ and $93.734m^3/y$), the economic benefits of those advanced water treatments can be expected to be KRW 13.8 billion and KRE 21.68 billion. And the calculated B/C ratios are 3.7 and 2.1 when a lifespan of facility is 10 years. Advanced water treatment should be introduced in terms of the economic benefits and costs. Thus, this results can be useful in water policy decision-making.

SOA와 웹서비스

장석원,Jang, Seok-Won 한국컴퓨터사용자협회 2006 The USERS Vol.47 No.-

『文章』 게재 시의 특성

장석원(Jang Seok-won) 韓國批評文學會 2010 批評文學 Vol.- No.36

It is very difficult to have an overall understanding of 195 poems published in Munjang. Munjang was not the literary magazine for writers from specific trends or schools of literary thoughts. It published poems of 55 poets and it is not too much to say that almost all prominent poets of that period published their poems in Munjang. Therefore, it would be very difficult to find out the characteristics of poems published in Munjang according to a single standard. Among poems in Munjang, Poems by Jeong Ji-yong and Paek Seok are influenced by the ‘old’. They accepted the past literary tradition and developed a new form, and extended the context of temporal and spatial meanings of poems. This paper confirmed the intensity of admiration for the past in poems by Jo Ji-hoon and Park Jong-hwa. These are examples of the influence of the ‘old’ in Munjang. Especially, intense admiration expressed in their poems is an extreme of taste in antique or classicism shown in poems of Munjang. Jeong Ji-yong mobilized sense to restore the world of landscape in his later poems. His sense was obtained from the tradition of the Orient. The ‘new’, an elaborate and detailed sense succeeded and developed by Jeong Ji-yong and the ‘old’, an inclination for taste in antique or classicism of Munjang meet. The relation between 195 poems by 55 poets and the inclination for taste in antique or classicism of Munjang is very distinctive. This paper made detailed investigation into how the characteristics of Munjang was reflected in all poems published in Munjang or how each poet reacted to this characteristics. And with this investigation, it examined how the inclination for taste in antique or classicism of Munjang permeated into the characteristics of poems in that period and how it was modified by each poet. As with the case of Jeong Ji-yong, poems in Munjang showed the aspects of mixing the ‘old’ and the ‘new.’ Classifying poems in Munjang into the ‘old’ and the ‘new’, this paper clarified that these two were not in opposition but in the process of compromising. The old and the new are distinguished externally, however, the difference is not so great except the primary characteristics of subject matter and form. This paper revealed that there is no value rank between the ‘old’ and the ‘new.’ They were equal and parallel at the same time. In poems of Munjang, the ‘old’, presented with the inclination for taste in antique or classicism and the ‘new’ of those days, products of modern era coexisted together.

단색 OLEDs 패널 제작을 위한 PLD 공정 개발

장석원(S. W. Jang),김창교(C. K. Kim),유홍진(H. J. Yoo),홍진수(C. S. Hong) 대한전기학회 2004 대한전기학회 학술대회 논문집 Vol.2004 No.7