궤도 차량의 기동성능 예측 프로그램 개발

서정길,김종수,김용태,이경식,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

In this paper, we developed a Windows XP version off-line programming system which can simulate a track vehicle model in 3D graphics space. The track vehicle was adopted as an objective model. The interface between users and the off-line program system in the Windows XP's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc. were utilized for 3D Graphics.

숙명박물관 브랜드 프로모션을 위한 통합적 브랜드 개발 -2D, 3D, 4D 디자인 프로세스를 중심으로-

길혜경,김보현,오정은,이서연,이지원,이진민,장미정,이성애 숙명여자대학교 산업디자인연구소 2017 숙명디자인학 연구 Vol.24 No.-

본 연구는 여성생활사 중심의 유물 박물관인 숙명박물관의 인지도와 브랜딩의 문제를 해결하기 위해 브랜드·스페이스·마케팅을 활용한 통합 브랜드 개발 프로세스를 제안하는데 목적이 있다. 아울러 본 연구는 박물관의 브랜드를 프로모션하고 그래픽, 제품, 공간의 통합 브랜드를 구축하는 일련의 프로세스를 밝히는데 목적이 있다. 이에 본 연구의 시간적 범위는 2017년 3월부터 6월까지 총 15주간 숙명여대 환경디자인학과 <브랜드·스페이스·마케팅>수업에서 진행된 수업의 결과물로서 4개 팀 중, 1개 팀의 작업물로 한다. 본 연구의 대상적 범위는 ‘숙명여자대학교 숙명박물관'의 2D~4D까지의 전반으로 설정한다. 그 결과, 제품부터 공간까지 숙명박물관의 통합된 브랜딩은 일 관성과 객관성, 스토리성을 얻을 수 있었다. ’숙명박물관'은 학교의 박물관이라는 장점을 극대화시켜 가치와 스토리를 부여하고 하나의 브랜드로 리뉴얼했다는 점에서 의의가 있다. 또한 향후 보편적인 박물관들의 차별화된 브랜드 개발의 참고자료로 활용될 수 있을 것으로 기대하며 브랜드 개발에 있어서 G·I, P·I, S·I의 통합 브랜드 메뉴의 기초 자료로 활용될 것으로 사료된다.

방위특징 탐지 단순신경세포들의 배열순서에 관한 연구

김길중,김정국,서광명,서용수 동서대학교부설연구소 1998 연구소 논문집 Vol.3 No.-

Cells in avisual cortex line in columns which are perpendicular to the cortical surface and the cortical cells in a column prefer to respond to an orientation of each line segments of an sesory image. orientation preference of each cortical column is highly correlated to those of nearbycolumns and varies smoothly anlong the surface of the cortex. To elucidate the mechanism of this columnar organization, we propose a simple model consisting of orientation selective neruons(OSNs) with local facilitation and lateral inhibition. it is playsible that modifiable connections play an important role in forming and refining the organization togher with the sensory experience. Thus the feed-forward connections between OSNs and LGN cells are modifiable. The interactions between OSNs in the same layer take place by way of feedback pathways and are excitatory and inhibitory. The behavior of the model is described by a STM equations of Growwberg and critical parameter of negative one dimensional ??G function, σ would give variety to the differences in detected orientations.

조기위암의 형태학적인 분류에 따른 임파절 전이 양상

최은서,강길,박정희,장정환,김권천,김경종,민영돈 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Currently, in the limited cases of early gastric cancer (EGC), endoscopic mucosal resection (EMR) is used for curative treatment. However, its completeness is still controversial. The purpose of this study was to review the suggested indications of EMR. We retrospectively analyzed 234 patients with EGC who underwent curative (RO) gastrectomy. The enrolled cases were further classified into mucosal and submucosal types, and mucosal EGC were further classified according to the size, gross type and histologic pattern. 133 patients had mucosal cancers and 101 patients submucosal. The overall incidence of positive lymph node was 14.1% (33/234), the incidence of mucosal cancer was 8. 3% (11/133), which was significantly lower than that of submucosal, 22% (22/101). Of 133 patients with mucosal EGC, 90 were smaller than 2㎝ in size and the incidence of lymph node metastasis was 5.6% (5/90), compared to 43 of larger than 2㎝ with the incidence of 14% (6/43). According to the gross type classification of mucosal cancer, incidence of lymph node metastasis in protruded type (EGC type Ⅰ, Ⅱa, Ⅰ+Ⅱa) was 15.4% (4/26), nat type(EGC type Ⅱb) 2. 9% (1/35), depressed type (EGC type Ⅱc, Ⅲ) 8.3% (6/72). Lymph node metastasis in differentiated type of mucosal cancer was 6.9% (5/72) and undifferentiatcd type 9.8% (6/61). In this study, there was no single indication free from lymph node metastasis, It is thought that the selection of EMR for the curative treatment of EGC should be considered carefully and more clinical studies with long-term follow up are necessary for EMR to be generally acceptable.

男性不姙症의 治療에 對한 文獻的 考察

김길섭,서운교,鄭智天 東國大學校韓醫學硏究所 1994 東國韓醫學硏究所論文集 Vol.3 No.-

Studying documents & papers on the cure of mate sterility to conclusion as follows. 1. The methodes of cure were applied Onbosinyang, Jaeumbosin, Soganheul, Joseubhwadam, Boickgihyul, Hwalhyeolhwaua, Boickbisn, etc. And the causes of disease were applied Sinyanghue, Sineumhue, Ganulgihe, Damseubneon, Gihwelyanghue, Gichehyeolul, Bisinyanghue, etc. 2. Prescription were applied Chanyukdan Ojayuenjonghwan on Sinyanghue, Yukmijihwan Jibekjihwanghwan on Sinuemhue, Sihosogansan Soyosan on Ganulgiche, Changchuldodamtang Bihebunchungeum on Damseubneon, Sibjyundaebotang Paljintang on Gihyeolyanghue, Sobokchu-kuatang Gueasengjungtang on Gichehyeolul, Sibjayukguntang Bisinssangbohwan on Bisinyanghue, etc. and Ojayunjonghwan being added in the base to cure another causes of disease as well as Sinhue. 3. The cause of disease were presonted to be Sinhue mostly ; Sinvanghue particulatly. And there were usually 25∼42years old, married lives of 3~8years, cure periods of 2∼5mon-ths, general effectiveness(approximately 76%), pregnancies(approximately 47%). 4, The methodes of cure in oriental medical prepared with the causes of disease in western one are showed in blow ; The cause of semen formation disorder is considered the methodes of cure in Onbosinyang, Jaeumbosin, Boickbin and the cause of functional ejaculation disorder in mind is considered the method of cure in Sogangegwu on the base in Bosin.

선천성 수정 대혈관 전위증 - 부검1 예 -

황적준,한길로,김윤신,서정욱 大韓法醫學會 1998 대한법의학회지 Vol.22 No.1

The corrected transposition of the great arteries is a rare congenital heart anomaly consisting of the discordant connections of both the atria to ventricles and the ventricles to the great arteries. But its circulation is physiologically corrected and therefore it is compatible with life unless there are associated lesions. Our case was associated with VSD, COA, and PDA. He was slightly cyanotic and irritable. Despite of oxygen supply, his symptoms were not improved and he eventually died in 52 hours after delivery. Medical record revealed severe respiratory and metabolic acidosis.

A lightweight design approach for an EMU carbody using a material selection method and size optimization

Jeong Gil Cho,Jeong Seo Koo,Hyun Seung Jung 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.2

This study proposes a weight reduction design approach for urban transit carbody using a material selection method and size optimization. First, the material selection method, which uses specific stiffness and strength indices to predict the weight reduction rate, is set up when the materials of the under-frame and roof structure are substituted. The CFRP was chosen as the best weight reduction material in terms of the material selection method but was not appropriate for application to an urban transit carbody as a thin panel because of outof-plane deformation. Therefore, we applied CFRP-AL honeycomb sandwich composites to the under-frame and roof structures, and the size optimization method was subsequently applied to derive a lightweight composite hybrid carbody design. Finally, the proposed approach was applied to an urban transit carbody, i.e., a Korean electrical multiple units carbody made of aluminum extrusion profiles. The weight of the optimized composite hybrid carbody design was 29.0% lighter than that of the original K-EMU. The resulting composite hybrid carbody design satisfied the design guidelines of the Performance Test Standard for K-EMU according to the corresponding FE simulations.

Hydrogen Production by Steam Reforming of Liquefied Natural Gas over Mesoporous Ni-Al2O3 Catalysts Prepared by a Co-Precipitation Method: Effect of Ni/Al Atomic Ratio

Seo, Jeong Gil,Youn, Min Hye,Nam, Insung,Hwang, Sunhwan,Chung, Jin Suk,Song, In Kyu Springer-Verlag 2009 Catalysis letters Vol.130 No.3

Hydrogen production by steam reforming of liquefied natural gas (LNG) over Ni–Al₂O₃ catalysts prepared by a sequential precipitation method: Effect of precipitation agent

Seo, Jeong Gil,Youn, Min Hye,Park, Dong Ryul,Nam, Insung,Song, In Kyu Elsevier 2009 International journal of hydrogen energy Vol.34 No.19

<P><B>Abstract</B></P><P>Mesoporous Ni–Al<SUB>2</SUB>O<SUB>3</SUB> catalysts (denoted as NiAl–NH<SUB>4</SUB>OH, NiAl–KOH, NiAl–NaOH, and NiAl–Na<SUB>2</SUB>CO<SUB>3</SUB>) were prepared by a sequential precipitation method using various basic solutions (NH<SUB>4</SUB>OH, KOH, NaOH, and Na<SUB>2</SUB>CO<SUB>3</SUB>) as precipitation agents. They were then applied to the hydrogen production by steam reforming of liquefied natural gas (LNG). The effect of precipitation agent on the physicochemical properties and catalytic activities of mesoporous Ni–Al<SUB>2</SUB>O<SUB>3</SUB> catalysts in the steam reforming of LNG was investigated. Physicochemical properties of Ni–Al<SUB>2</SUB>O<SUB>3</SUB> catalysts were strongly influenced by the precipitation agent. Surface area and pore volume of Ni–Al<SUB>2</SUB>O<SUB>3</SUB> catalysts decreased in the order of NiAl–NH<SUB>4</SUB>OH>NiAl–KOH>NiAl–NaOH>NiAl–Na<SUB>2</SUB>CO<SUB>3</SUB>. Regardless of the identity of precipitation agent, nickel species were finely dispersed on the surface of Ni–Al<SUB>2</SUB>O<SUB>3</SUB> catalysts through the formation of surface nickel aluminate phase. LNG conversion and hydrogen composition in dry gas decreased in the order of NiAl–NH<SUB>4</SUB>OH>NiAl–KOH>NiAl–NaOH>NiAl–Na<SUB>2</SUB>CO<SUB>3</SUB>. Nickel surface area played an important role in determining the catalytic performance of Ni–Al<SUB>2</SUB>O<SUB>3</SUB> catalysts. Among the catalysts tested, NiAl–NH<SUB>4</SUB>OH catalyst with the highest nickel surface area showed the best catalytic performance and the strongest resistance toward carbon deposition in the steam reforming of LNG.</P>

Effect of Ni/Al atomic ratio of mesoporous Ni–Al₂O₃ aerogel catalysts on their catalytic activity for hydrogen production by steam reforming of liquefied natural gas (LNG)

Seo, Jeong Gil,Youn, Min Hye,Bang, Yongju,Song, In Kyu Elsevier 2010 International journal of hydrogen energy Vol.35 No.22

<P><B>Abstract</B></P><P>Mesoporous Ni–Al<SUB>2</SUB>O<SUB>3</SUB> (<I>X</I>NiAE) aerogel catalysts with different Ni/Al atomic ratio (<I>X</I>) were prepared by a single-step sol-gel method and a subsequent CO<SUB>2</SUB> supercritical drying method. The effect of Ni/Al atomic ratio of mesoporous <I>X</I>NiAE aerogel catalysts on their physicochemical properties and catalytic activity for steam reforming of liquefied natural gas (LNG) was investigated. Textural properties and chemical properties of <I>X</I>NiAE catalysts were strongly influenced by Ni/Al atomic ratio. Nickel species were highly dispersed on the surface of <I>X</I>NiAE catalysts through the formation of surface nickel aluminate phase. In the steam reforming of LNG, both LNG conversion and hydrogen yield showed volcano-shaped curves with respect to Ni/Al atomic ratio. Average nickel diameter of <I>X</I>NiAl catalysts was well correlated with LNG conversion and hydrogen yield over the catalysts. Among the catalysts tested, 0.35NiAE (Ni/Al=0.35) catalyst with the smallest average nickel diameter showed the best catalytic performance. The highest surface area, the largest pore volume, the largest average pore size, and the highest reducibility of 0.35NiAE catalyst were also partly responsible for its superior catalytic performance.</P> <P><B>Research highlights</B></P><P>►Hydrogen was produced by steam reforming of liquefied natural gas (LNG). ►Mesoporous Ni–Al<SUB>2</SUB>O<SUB>3</SUB> aerogel catalysts were used. ►Catalytic performance strongly depended on Ni/Al atomic ratio. ►Average nickel diameter played an important role.</P>