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핀테크 기반 주식투자 최적화 모델 구축 사례 연구 : 기관투자자 대상
김홍곤 ( Kim Hong Gon ),김소담 ( Sodam Kim ),김희웅 ( Hee-wooong Kim ) 한국지식경영학회 2018 지식경영연구 Vol.19 No.1
The finance-investment industry is currently focusing on research related to artificial intelligence and big data, moving beyond conventional theories of financial engineering. However, the case of equity optimization portfolio by using an artificial intelligence, big data, and its performance is rarely realized in practice. Thus, the purpose of this study is to propose process improvements in equity selection, information analysis, and portfolio composition, and lastly an improvement in portfolio returns, with the case of an equity optimization model based on quantitative research by an artificial intelligence. This paper is an empirical study of the portfolio based on an artificial intelligence technology of “D” asset management, which is the largest domestic active-quant-fiduciary management in accordance with the purpose of this paper. This study will apply artificial intelligence to finance, analyzing financial and demand-supply information and automating factor-selection and weight of equity through machine learning based on the artificial neural network. Also, the learning the process for the composition of portfolio optimization and its performance by applying genetic algorithms to models will be documented. This study posits a model that the asset management industry can achieve, with continuous and stable excess performance, low costs and high efficiency in the process of investment.
성곽유적의 정비복원(整備復元) 대상구간 선정을 위한 평가지표 연구
김홍곤 ( Hong Gon Kim ),최기수 ( Key Soo Choi ) 한국전통조경학회(구 한국정원학회) 2012 한국전통조경학회지 Vol.30 No.1
성곽유적(城郭遺蹟)은 대규모의 선적(線的)형태를 지닌 특성으로 인하여 중장기에 걸친 단계적 정비복원 사업이 불가피하다.이로 인하여 다양한 가치요인에 의한 평가를 통하여 정비복원(整備復元)사업의 대상구간이 설정되어야 함에도 불구하고 그동안 가치평가의 명확한 기준과 방법이 설정된 바가 없었고,성곽유적의 가치평가를 통하여 정비사업의 범위를 정한 선행의 사례에 있어서도 산성유적과 읍성유적이라는 상이한 환경 에 놓여진 두 유형의 평가체계에서 평가항목과 가중치의 설정이 이루어지지 않은 한계를 보이고 있었다.이러한 한계점을 해결하기 위하여 본 연구는 성곽유적의 우선적이고 현실적으로 진행할 수 있는 정비복원 대상구간의 선정을 위한 가치평가방법론에 대한 접근을 시도하였다는 데서 다음과 같은 의의를 둘 수 있다. 첫째, 성곽유적의 정비복원 대상구간 선정을 위한 가치평가 항목으로 3개의 평가요소(상위지표)와 9개의 평가항목(하위지표)을 도출하였다. 둘째, 전문가 설문을 통한 AHP분석에 의한 평가항목별 상대적 중요도 분석을 실시함으로써 항목별 가중치를 산출하였다. 셋째, 성곽유적 정비복원계획에 있어 산성과 도시읍성의 유형에 따른 세부적인 가치평가의 체계를 마련하였다. 따라서 본 연구는 현재까지 통합적이고 객관적인 가치평가 기준이 부재하였던 성곽유적의 정비복원계획을 수립하는 과정 중 정비복원 대상의 우선순위를 결정함에 있어서 하나의 중요한 판단기준으로 기능할 수 있을 것으로 판단되며,향후 본 연구에서 도출된 평가체계의 활용 방안에 대한 충분한 연구와 검토가 이루어져야 할것이다. Most of all Castle Remains in Korea were built on an axis of development with a scale of great magnitude. Because of its characteristics, the restoration and conservation plans should be phased in over medium and long term. There is no standards for evaluating the value of Castle Remains to set up the restoration and conservation sections. Some plans were set up through the value evaluation of its Castle Remains but those plans didn`t have Evaluation System and different weight depending on different environment between Sanseong(mountain fortress) and Eupsung(fortress built in villages). To solve the limitation of Evaluation System of Castle Remains, this study try to approach in the Evaluation System methodology for selecting restoration sections. The results of its study follow below. First, this study drew the Evaluation Indices for selecting restoration sections of Castle Remains. There are three kinds of Elements(upper Index) and nine kinds of Evaluations(low Index). Second, Calculation of weight index by index on the questionnaire survey from expers through the relative importance analysis of AHP. Third, This study suggests the specific Evaluation System according to types; Sanseong(mountain fortress) and Eupsung(fortress built in villages);. Therefore, this study suggests standards to select the priority list for the restoration and conservation plan process and it can be used one of important standards in future plans.
정상상태 액상 흐름 반응기에서 체류시간 분포에 영향을 주는 인자 조사
김유락 ( You Rak Kim ),이치형 ( Chi Hyung Lee ),김경훈 ( Kyoung Hoon Kim ),이홍연 ( Hong Yeon Lee ),김홍곤 ( Hong Gon Kim ),김의용 ( Eui Young Kim ) 서울시립대학교 산업기술연구소 2006 산업기술연구소논문집 Vol.14 No.-
Factors affecting RTDs of two ideal steady-state flow reactors were investigated. A continuous stirred tank reactor (CSTR) and a plug flow reactor (PFR), were used for this study. The mean residence time of the NaCl tracer on a CSTR generally decreases with increasing agitation speed. However, it increases at 600 rpm agitation speed because of forming stagnant region in the reactor. For the PFR, the mean residence time decreases with increasing liquid velocity and decreasing the length of PFR, and correlations between these parameters and axial dispersion coefficient in the axial dispersion model (ADM) were obtained.
안병성,김홍곤,권영수 ( Byoung Sung Ahn,Hong Gon Kim,Young Soo Kwon ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.3
A method for determining heat transfer coefficients and the effective thermal conductivity in a nonisothermal and nonadiabatic fixed-bed reactor has been proposed. By using the temperatures experimentally measured at several points in the fixed-bed and the outside wall of the reactor, the overall heat transfer coefficient(h_t), the inside wall heat transfer coefficient(h_w), and the effective thermal conductivity(k_(er)) were calculated on the assumption that the system is pseudo-homogeneous. The system has been analyzed one-dimensionally for h_t and two-dimensionally for h_w & k_(er), respectively. The coefficients obtained in the temperature range of 200-300℃ for the reactor of 4 diameter were found to be different for heating or cooling. Nevertheless, the temperature distributions in the reactor simulated with the obtained coefficients were in a good accordance with the experimental observations. The effect of fluid convection in the fixed-bed according to heating or cooling on k_(er) was also discussed. The method proposed in this study can be very effectively used in determining the coefficients and predicting the temperature distribution in an industrial fixed-bed reactor without any additional system or instrument.