무인운전경전철시스템의 효과적 운영을 위한 사업초기단계 SE적용방안

정수영(Su-Young Chung),박수중(Soo-Choong Park),민경세(Kyung-Se Min),전서탁(Seo-Tak Jeon) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10

Recently the demand regarding reliability and safety of the railroad are increased as built to Driverless LRT system. Therefore PM and SE technique is applied for efficient management of a construction business. In case of SE(System Engineering) in domestic most foreign companies are doing to lead but we are under effort for the environment that a domestic company can lead. In this study We emphasize to SE importance of pre-business for operation to be effective of Driveless LRT system and propose about activities in the SE at requirements definitions and requirements analysis steps of a highest level. To achieve this We propose SE Application Methods of Pre-Business regarding assistance process of project planning evaluation and control and risk management.

光州地域 一部 中·高等學生들의 試驗不安에 대한 硏究

전세정,정영,박상학 朝鮮大學校 附設 醫學硏究所 1997 The Medical Journal of Chosun University Vol.22 No.1

The main purpose of this study was to investigated the relationship between test anxiety and several variables (sex, grade of school, parent's school year, academic performance, parent's occupation, religions, blood type, personality trend, etc) in middle and high school students in Kwangju City (total numbers = 1060). Test Anxiety was assessed by the TAI-K(Kim Moon Joo, 1990). The data were processed by student t-test and ANOVA . The results were as follows , 1. Female students showed significantly higher level of test anxiety scores than males (especially worry factors were more prominent than emotionality factors) 2. In the area of grade difference in test anxiety, 2nd grade students were the highest group, 3rd grade were the lowest group in high school, In middle school, 1st grade were the highest and 3rd grade were appeared the lowest score of test anxiety. 3. In the area of mothers school graduate, female student with high school graduated mother group were appeared significantly higher test anxiety scores than other groups. 4. School performance and test anxiety was correlated negatively and significantly. 5. If student dislikes Korean, Mathematics and English subjects, they experienced higher test anxiety significantly than other groups. 6. Test anxiety scores were significantly higher in groups of live with their brothers or sisters than have no brothers and sisters group. 7. In male students, one of parent was not employed group had higher test anxiety scores than employed all. 8. In female students with religion, test anxiety scores were higher than had no religion group.

Interface Shear Strength at Joints of Ultra‑High Performance Concrete Structures

Young?Jin Kim,Won?Jong Chin,Se?Jin Jeon 한국콘크리트학회 2018 International Journal of Concrete Structures and M Vol.12 No.6

When ultra-high performance concrete (UHPC) is fabricated as precast members such as in a UHPC segmental bridge, the joint design between the precast members can significantly affect the overall integrity and safety of the structure. Therefore, the structural behavior of the UHPC joint was experimentally investigated in this study with test variables including joint type, number and height of shear keys, type of filler, curing temperature, and lateral compressive stress. The UHPC considered in this study is the K-UHPC developed in Korea with a specified compressive strength as high as 180 MPa and high flowability. The joint shear strengths affected by the test variables were investigated in detail. The test results were also compared with two representative predictive equations for interface shear strength to determine an appropriate equation for the joint design of UHPC. These equations did not match well with the test data because they were originally proposed for normal strength concrete. However, the JSCE equation could be improved by modifying a coefficient to show good agreement with the test especially in the case of the dry joint with epoxy application.

한국인의 문화예술 여가활동 실태 조사

최영렬,유재충,전익기,김태운,안세욱 경희대학교 사회체육연구소 1996 體育科學論叢 Vol.- No.9

The Purpose of this study was to investigate leisuer activities in the age of 30's and 40's. The total sample consisted of 2,125 in the age of 30's and 40's. The data were obtained through questionnaires which were modified, interviwed, and collected by the researcher. A number of statistical procedures, Descriptive Statistics and ANOVA, were used to analyze the datd. An analysis of study determined the ersults as fllowings: 1) Male' and female' leisure time during the week and weekend was less than 3 hours. 2) Male's motivation and purpose to participate in leisure activities was "Spending time moderately" and female' motivation and purposr to participate in leisure activities was "Minimalize stress". 3) There was no differnece between males and females in terms of having leisure activities with their families. 4) No matter the gender, they were unsatisfied with a welfare system which provided local government. 5) They favorited a welfare policy where every other Saturday was a holiday.

光波長이 오이(Cucumis sativus L.) 플러그苗의 生長에 미치는 影響

용영록,전지영,황세진,김일섭,정천순 강릉대학교 동해안지역연구소 2000 東海岸硏究 Vol.11 No.1

This research was carried to find out the optimum artificial light condition for plug seedling production of high quality cucumber through investigating growth response of the seedling by both light wave length and treatment period. The treatment with blue and red fluorescent lamp increased the fresh weight involving hypocotyl and root and controlled the elongation of hypocotyl, compared with other treatments. The 30-day-old seedling treatment with blue and red light for 12 hours showed that vegetative growth including root, stem and leaves was better than that of seedling treated with other lamps. Seedling under blue and red light for 12 hours grew 60.0mm and 0.55g in length and weight of hypocotyl. respectively, Hypocotyl length and weight were 44.9mm and 0.62g when seedling was grown under above light condition for 6 hours. Total chlorophyll contents of hypocotyl were highest in the light mixing treatment, and this accelerated greening. Morphological characteristics by investigating cross and longitudinal section of 30-day-old cucumber seedling treated with the mixing fluorescent lamps indicated that epidrmis tissues were usually single layer and thicker, resulting in small, compact and non-intercellular spaces of cells. On the other hand, epidermis tissues of the control composed of large, longer and round cells and cortex tissues showed large intercellular spaces between cells. Longitudinal section of photo-treated hypocotyl showed that there were more shorter cells and non-intercellular spaces of cells than untreated tissues. As a result, blue and red light mixing treatment controled the cell elongation of seedling hypocotyl, resulting in shortening hypocotyl of cucumber seedling.

두경부 악성 림프종의 면역조직화학적 유형분석 및 Epstein-Barr virus의 검출

김성현,전세영,임동명 조선대학교 부설 의학연구소 1999 The Medical Journal of Chosun University Vol.24 No.1

Background and Objectives : The Epstein-Barr virus(EBV) is a human herpes virus which causes infectious mononucleosis and is associated with such human cancers as Burkitt's lymphoma and nasopharyngeal carcinoma. However, the role of EBV as a causative factor in other head and neck tumors is not fully elucidated. Malignant lymphoma is a tumor of the immune system which is commonly known as a non-epithelioid tumor of the head and neck region. Recent studies have suggested a probable etiologic association between EBV and lymphomas. This study was performed to investigate the strength of the association of EBV with malignant lymphoma and to carry out an immunohistochemical classification. Materials and Methods : Twenty one cases of non-Hodgkin's lymphoma tissues in the head and neck were used. Immunohistochemical staining was carried out with EBV protein, CD20 and CD3. Results : Among the 21 cases of malignant lymphoma, 9(43%) of the cases were of B cell lineage, 10(48%) of the cases of T cell lineage and 2(10%) of the cases were of an unclassifiable type. The commonest histopathologic type were diffuse large cell types and diffuse mixed types in 8(38%) of the cases. All 6 cases(100%) of nasal/paranasal sinus lymphoma were T-cell lymphoma. The detection rate of EBV in malignant lymphoma tissue was 52%. EBV was detected in 5 cases(56%) of B-cell lineage and 6 cases(60%) of T-cell lineage. Among 6 cases of nasal/paranasal sinus T-cell lymphoma, 4(67%) were positive for anti-human EBV protein. In the positive cases, a large number of the neoplastic cells and infiltrated lymphocytes showed strong nuclear signals. Conclusion : These results suggest that most nasal/paranasal sinus lymphomas are T-cell type neoplasms and EBV probably plays an etiologic role in the pathogenesis of group nasal/paranasal sinus T-cell lymphomas.

뇌종양 환자의 제왕절개술을 위한 전신마취 : 증례 보고 A case report

이헌근,전세현,손주태,신일우,정영균 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.4

A 28-year-old primigravida at 33 weeks gestation was referred to our hospital because of aggravation of seizures which occurred intermittently for the past 2 years. A brain magnetic resonance imaging scan taken at 33 weeks gestation showed a large brain tumor (7 × 5 × 4 cm) in the left high frontal lobe. She had a cesarean section under general anesthesia at 38 weeks and 1 day gestation. General anesthesia was induced with thiopental 250 mg, succinyleholine 75 mg and lidocaine 60 mg after a vecuronium 0.8 mg intravenous injection. The hyperventilation and mannitol used to reduce increased intracranial pressure (ICP) in this patient may be harmful and detrimental to the fetus before delivery. Achieving both ICP control and fetal well being at the same time during a cesarean section can be challenging to anesthesiologists. We report the anesthetic management of a cesarean section in a patient with a large brain tumor. (Korean J Anesthesiol 2002; 43: 515~519)

비강 및 부비동에 발생한 반전성 유두종의 임상-병리조직학적 고찰

노용훈,이승학,전세영,김용기,나한조,최봉남,서재홍 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

마우스에서 고려홍삼 추출물의 단회 및 반복투여독성 평가

임숙희, 신선희, 장자영, 변상국, 이예은, 박동선, 전정희, 이용경, 이동만, 이세라, 김재승, 황방연, 노재섭, 남상윤, 윤영원, 김윤배 충북대학교 동물의학연구소 2005 Journal of Biomedical and Translational Research Vol.6 No.2

본문참조

Anisotropic Terahertz Emission from Bi ₂ Se ₃ Thin Films with Inclined Crystal Planes

Hamh, Sun Young,Park, Soon-Hee,Han, Jeongwoo,Jeon, Jeong Heum,Kahng, Se-Jong,Kim, Sung,Choi, Suk-Ho,Bansal, Namrata,Oh, Seongshik,Park, Joonbum,Kim, Jun Sung,Kim, Jae Myung,Noh, Do Young,Lee, Jong Seo Springer US 2015 NANOSCALE RESEARCH LETTERS Vol.10 No.1

<P>We investigate the surface states of topological insulator (TI) Bi<SUB>2</SUB>Se<SUB>3</SUB> thin films grown on Si nanocrystals and Al<SUB>2</SUB>O<SUB>3</SUB> substrates by using terahertz (THz) emission spectroscopy. Compared to bulk crystalline Bi<SUB>2</SUB>Te<SUB>2</SUB>Se, film TIs exhibit distinct behaviors in the phase and amplitude of emitted THz radiation. In particular, Bi<SUB>2</SUB>Se<SUB>3</SUB> grown on Al<SUB>2</SUB>O<SUB>3</SUB> shows an anisotropic response with a strong modulation of the THz signal in its phase. From x-ray diffraction, we find that the crystal plane of the Bi<SUB>2</SUB>Se<SUB>3</SUB> films is inclined with respect to the plane of the Al<SUB>2</SUB>O<SUB>3</SUB> substrate by about 0.27°. This structural anisotropy affects the dynamics of photocarriers and hence leads to the observed anisotropic response in the THz emission. Such relevance demonstrates that THz emission spectroscopy can be a sensitive tool to investigate the fine details of the surface crystallography and electrostatics of thin film TIs.</P>