한국증시의 포트폴리오모형적용에 관한 연구

정연중 아태경제학회 1998 학술대회 논문집 Vol.- No.1

This treatise discussed the development and its applicability of the analytic methodology for the portfolio-based securities investment, and has reached the following conclusion. First, since current market indices such as stock prices and trading volumes reflect all the available past information, it is virtually impossible to gain extra profits by taking advantage of the past market information. Second, since current stock prices are those reflecting not only the past market information but also political/economic events, new information related to corporations and non-market information, it is hardly possible to earn extra profits by means of utilizing any kind of information that have already been made public. Third, current stock prices reflect not just publicized information but also special information discovered by the legitimate efforts made by investment professionals, and this make it impossible to raise any extra earnings by using any kind of information. This conclusion has a significance and a limitation as well in that this treatise has proposed another hypothesis that has to be verified repeatedly in accordance with changes in the type of the stock market and economic environment, together with the development process of various measures taken to cope with the complete opening up of the Korean capital market. On this point, further study and verification are to be conducted.

도심부 도보관광을 통하여 본 을지로 제조업 밀집지역의 관람공간 특성에 관한 연구- 중구 도보관광 ‘을지유람’을 중심으로 -

정연중,조항만 한국문화공간건축학회 2017 한국문화공간건축학회논문집 Vol.- No.59

This study focuses on the phenomenon of manufacturing district in the inner city of Euljiro District being a subject of sightseeing without losing its original functional properties. ‘Eulji-Uram’ is a walking tour program that links various kinds of manufacturing firms, manufacturing-related retail shops, famous local restaurant and artists studios into one single route. This phenomenon implies a radical change in perception toward industrial district from ‘disqualified’ area into ‘subject of sightseeing’. By analyzing the characteristics of ‘sightseeing-space’ of the district, the study tries to understand the phenomenon in spatial dimension. To do so, the study is composed into two stages of research. First, the study examines the general characteristics of walking tour program within the boundary of Central Area of Seoul. The study draw out the spatial typology of walking tour route in terms of formal dimension, sightseeing-element and urban configuration. In the second stage, the study concentrates specifically on walking tour ‘Eulji-Uram’, in order to analyse the spatial characteristics of sightseeing route in Manufacturing District. The research method of second stage is to analyse the spatial characteristics of sightseeing manufacturing district by dividing the district into urban-composing element and industry-composing element. ‘Urban-composing element’ focuses on the formal characteristics while ‘industry-composing element’ focuses on the functional characteristics of the district. ‘Urban-composing element’ and ‘industry-composing element’ together implies overall industry-space relationship within the districts. Basing on these analysed elements, the result of the study can be sum up into three spatial characteristics of ‘sightseeing-space’. Firstly, industry that shares similar characteristics accumulated in a specific spatial configuration, would form cluster of space that contains unique sightseeing characteristics. Secondly, array of different characteristics of space would create sets of transformative spatial elements. Lastly, establishment of sightseeing route reveals some of the extreme condition of the streets that serves particular industrial purpose.

플라스마 중합을 이용한 폴리에틸렌 필름의 차단성 향상

정연중,조동련 ( Y . J . Jeong,D . L . Cho ) 한국화학공학회 1996 화학공학의이론과응용 Vol.2 No.1

학술 발표 논문 초록 / 지구과학내용분야 1 : 광양 폐금속광산 주변의 음용수에 대한 환경 지구화학적 연구

정연중,최낙철,강지성,박신숙,김성구,박천영 한국지구과학회 2000 정기총회 및 추계학술발표 논문요약집 Vol.2000 No.-

LA-MC-ICPMS를 이용한 괘불탱에 사용된 안료의 납 동위원소 분석

정연중,김숙주,한기운,김효진,김소진,이은우 한국분석과학회 2021 학술대회논문집 Vol.2021 No.11

회화문화재인 우리나라 괘불탱에 대한 연구는 유물의 보존 · 복원 자료 확보를 목적으로 과학적인 분석을 통해 안료의 재료 분석, 채색 기법연구 및 제작방법 등을 규명하는데 있다. 특히 동위원소 분석은 유물의 제작에 사용된 원료의 산지를 추정하는데 대표적인 방법이다. 본 연구에서는 괘불탱 제작에 사용된 채색 안료 중 연백색 안료에 대한 납 동위원소 분석을 바탕으로 안료의 산지 추정 및 괘불탱에 사용된 안료의 동일성 판별 등에 대해 검토하였다. 괘불탱에 사용된 안료는 수십 ㎛ 내외의 두께로 사용되어 기존의 습식분석으로는 채색 안료별로 구별이 어려워 공간분해능이 큰 LA-MC-ICPMS를 이용한 in-situ 분석법을 개발하여 이용하였다. 안료의 납 동위원소 분석에 사용된 LA-MC-ICPMS는 한국기초과학지원연구원의 NWR193<SUP>UC</SUP>와 Nu Plasma II를 결합된 장비를 이용하였다. 안료의 spot 분석에 이용된 spot size는 10 ~ 15㎛, ablation time은 30sec이며, 안료의 line analysis에는 analysis distance가 100㎛이고, scan speed는 5㎛/sec를 이용하였다. 분석법의 신뢰도 확보를 위해 참고물질로 확보한 연백색 및 연적색 시료에 대한 습식분석(TIMS)과 표면분석(LA-MC-ICPMS)의 정확도와 정밀도를 비교 검증한 결과 99% 내외의 높은 신뢰도를 나타냈다. 조선시대 제작된 만연사, 법주사, 통도사, 금탑사 등의 괘불탱에 사용된 연백색안료의 납 동위원소 분석을 수행하였고, 이를 통해 각 사찰의 괘불탱에 사용된 안료들의 동일성 판별 및 한반도 납동위원소 분포도를 활용하여 국내 안료 산지를 추정하였다.

The Protective Effects of Zanthoxylum bungeanum Maxim Pharmacopuncture on Disuse Muscle Atrophy in Rat Gastrocnemius Muscle

정연중,이윤규,이봉효,김재수,이현종 대한침구의학회 2019 대한침구의학회지 Vol.36 No.4

Background: This study aimed to investigate the protective effects of Zanthoxylum bungeanum Maxim pharmacopuncture on disuse muscle atrophy in the gastrocnemius muscle of rats. Methods: Thirty male 250 g Sprague-Dawley rats were distributed randomly into 3 groups. The left hindlimb immobilization was performed with casting tape for 2 weeks, and no treatment was given to the right hindlimb. Rats received pharmacopuncture and were injected daily on the BL57 with either 2 mL of Zanthoxylum bungeanum Maxim aqueous extract (ZM-W group), 1 mL pharmacopuncture of Zanthoxylum bungeanum Maxim ethanol extract (ZM-E group), or 2 mL normal saline (control group). After 2 weeks of immobilization, the weight of the whole gastrocnemius muscle was measured, and the morphology of both the left and the right gastrocnemius muscles were assessed by Hematoxylin and Eosin staining. To investigate the immobilizationinduced muscular apoptosis, the immunohistochemical analysis of BAX and Bcl-2 was carried out. Results: ZM-W and ZM-E significantly inhibited the reduction in weight of the left gastrocnemius muscle, the reduction in the left myofibrils, and the cross-sectional area of gastrocnemius, as compared with the control. Moreover, the ZM-W and ZM-E groups showed significantly reduced immunoreactivity for BAX, and increased immunoreactivity of Bcl-2 in left gastrocnemius muscle compared with the control group. Conclusion: These results suggest that Zanthoxylum bungeanum Maxim pharmacopuncture has protective effects against immobilization-induced muscle atrophy by regulating the activity of apoptosis-associated BAX / Bcl-2 proteins in the gastrocnemius muscle.

fs LA-ICP-MS를 이용한 silicate certified reference materials의 정량분석

정연중,김숙주,한기운,김효진,오승은 한국분석과학회 2022 학술대회논문집 Vol.2022 No.5

정읍엽리상화강암의 지구화학 및 동위원소 특성과 U-Pb 스핀 연대

정연중,정창식,박천영,신인현 한국지구과학회 2008 한국지구과학회지 Vol.29 No.7

본 연구는 정읍지역에 분포하는 정읍엽리상화강암의 지구화학 및 동위원소 특성을 파악하고 U-Pb 스핀 연대측정으로 구한 관입연대로 호남전단대의 전단작용시기를 밝히는데 있다. 본 암은 AMF삼각도의 칼크-알칼리암계열과 일치하며, 실리카와 FeOtotal / (FeOtotal + MgO)의 변화도에서 마그네시아 영역에 속한다. Rb-Ba-Sr삼각도의 분화정도에 따른 암상분류에서 화강섬록암과 이상화강암영역에 해당되며, 희토류원소분포에서는 뚜렷한 음(-)의 Eu이상을 나타낸다. 실리카와 미량원소를 이용한 마그마의 지체구조상의 판별도에서 본암은 화상호형(VAG)과 대륙충돌형(syn-COLG)에 해당되며 판구조운동과 관련된 응력장이 작용하는 대륙주변부나 호상열도 환경 하에서 형성되었음을 시사한다. 143Nd/144Nd비는 0.511495~0.511783의 범위이며, 결핍된 맨틀에 대한 모델연령(TDM)은 1.68~2.36Ga로 초기 원생대 시기의 맨틀에서 분리된 지각물질의 영향을 받았음을 시사한다. U-Pb 스핀연대는 238U-206Pb연대 172.9±1.7Ma와 235U-207Pb연대 170.7±2.8Ma로 조화로운 연대를 나타내어, 정읍주변지역의 전단작용 시기는 173Ma이후로 생각된다. In this paper, we investigate the geochemical and isotope properties of the Jeongeup foliated granite (hereafter, the JFG) in the Jeongeup area, aiming at establishing the movement age of the Honam shear zone by U-Pb sphene geochronology. In the AMF diagram, the JFG corresponds to the calc alkalic rock series, and belongs to the magnesia region in the diagram of silica versus FeOtotal / (FeOtotal + MgO). Additionally, in the Rb-Ba-Sr diagram, it is classified as granodiorite and anomalous granite with distinctive negative Eu-anomaly in the REE patterns. According to the silica and trace element contents, the JFG falls on the type VAG + syn-COLG, which implies that this was formed under the circumstance of compressional continental margin or volcanic arc. 143Nd/144Nd isotope ratios range from 0.511495 to 0.511783 and TDM are calculated to be about 1.68~2.36Ga. U-Pb sphene ages of the JFG are 172.9±1.7 Ma and 170.7±2.8 Ma, based on 238U-206Pb and 235U-207Pb ages, respectively. Presumably, the dextral ductile shearing in the Jeongeup area has occurred after 173 Ma.

Lead isotope mapping of galena from base metal deposits in the southern Korean Peninsula

정연중,정창식 한국지질과학협의회 2019 Geosciences Journal Vol.23 No.2

The purpose of this study is to investigate the differences in sources of discrete four zones that are represented by the lead isotope map of metal mines using galena samples. The lead isotope map has been constructed based on 119 galena samples from 38 metal mines in the southern Korean Peninsula, together with previously published data, using spatial and zoning distribution analysis. The spatial pattern of 206Pb/204Pb ratio shows relatively dense distribution with highest value at the northeastern region, while 207Pb/204Pb and 208Pb/204Pb ratios are the lowest at the southeastern region. These results indicate possible subdivision of the lead isotope maps based on geotectonic subdivisions and geographical locations of the Korean Peninsula. This subdivision has been checked by linear discriminant analysis (LDA). The range of lead isotopic composition for zone 1 has fairly homogeneous values (206Pb/204Pb = 18.156–18.591, 207Pb /204Pb = 15.482–15.644, and 208Pb /204Pb = 37.870–38.768), and are geographically similar to the Gyeongsang Basin. Lead isotopic compositions of zone 2 show the highest ratios (206Pb/204Pb = 18.625–20.483, 207Pb /204Pb = 15.708–16.068, 208Pb /204Pb = 37.734–40.463) in the southern Korean Peninsula, that are geographically corresponding to the Taebaeksan Basin and the northeastern Yeongnam Massif. Relatively lower values (206Pb/204Pb = 17.149–17.817, 207Pb /204Pb = 15.497–15.731, 208Pb /204Pb = 37.847–39.773) along the western Gyeonggi Massif are grouped as zone 4, while the rest of the areas, including the Okcheon metamorphic belt, most of the Gyeonggi Massif, and the Yeongnam Massif, might represent zone 3. The results clearly indicate the possible differences in the source reservoirs that are similar to the geotectonic provinces of the Korean Peninsula.

금융자율화와 금융산업의 발전방향

정연중 대진대학교 2001 大眞論叢 Vol.9 No.-

The conclusion derived from the study is as follows : The financial industry reform should be push ahead with the plan, such as a financial industry liberalization, a interest rate liberalization, and a large sized financial institution.