http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
추정호,주용휘,엄정호 한국융합보안학회 2022 융합보안 논문지 Vol.22 No.3
Voice phishing is a cyber crime in which fake financial institutions, the Public Prosecutor's Office, and the National Police Agency are impersonated to find out an individual's Certification number and credit card number or withdraw a deposit. Recently, voice phishing has been carried out in a subtle and secret way. Analyzing the trend of voice phishing that occurred in '18∼’21, it was found that there is a seasonality that occurs rapidly at a time when the movement of money is intensifying in the trend of voice phishing, giving ambiguity to time series analysis. In this research, we adjusted seasonality using the X-12 seasonality adjustment methodology for accurate prediction of voice phishing occurrence trends, and predicted the occurrence of voice phishing in 2022 using the ARIMA model. 보이스피싱은 가짜 금융기관, 검찰청, 경찰청 등을 사칭하여 개인의 인증번호와 신용카드 정보를 알아내거나 예금을 인출하게 하여 탈취하는 사이버 범죄이다. 최근에는 교묘하고도 은밀한 방법으로 보이스피싱이 이루어지고 있다. ‘18∼‘21년 발생한 보이스피싱의 추세를 분석하면, 보이스피싱이 발생되는 시기에 예금 인출이 급격하게 증가하여 시계열 분석에 모호함을 주는 계절성이 존재함을 발견하였다. 이에 본 연구에서는 보이스피싱 발생 추이의 정확한 예측을 위해서 계절성을 X-12 계절성 조정 방법론으로 조정하고, ARIMA 모형을 이용하여 2022년 보이스피싱 발생을 예측하였다.
추정호,이재용,강대성 東亞大學校 附設 環境問題硏究所 2007 硏究報告 Vol.29 No.1
It prevents the problem beforehand such as second infection by an illegal disposal of the waste which is harmful for people, can solve the real problem caused by management and disposal of the waste, using the RFID that is kernel technology of the next generation in this paper. At first, it is possible to prevent managers' impure intention beforehand, using the authentication card that is storing managers' bio-information who is managing the hazard material. Also it suggests efficient solution that can offer better environment that previous managers' working environment, applying the RFID system to every stage, from the first point of the occurrence time of the waste modeled on general material distribution process to the final processing stage.
얼굴인식 시스템을 위한 효과적인 인공해마 알고리즘 구현
추정호,강대성 동아대학교 정보기술연구소 2007 情報技術硏究所論文誌 Vol.14 No.2
In this paper, we propose the development of Artificial Hippocampus Algorithm(AHA) which remodels a principle of brain of hippocampus. Hippocampus takes charge auto-associative memory and controlling functions of long-term or short-term memory strengthening. We organize auto-associative memory based 4 steps system (EC, DG, CA3, and CA1) and improve speed of learning by addition of modulator to long-term memory learning. In hippocampus system, according to the 3 steps order, information applies statistical deviation on Dentate Gyrus region and is labeled to responsive pattern by adjustment of a good impression. In CA3 region, pattern is reorganized by auto-associative memory. In CA1 region, convergence of connection weight which is used long-term memory is learned fast a by neural network which is applied modulator. To measure performance of Artificial Hippocampus Algorithm, PCA(Principal Component Analysis) and LDA(Linear Discriminants Analysis) are applied to face images which are classified by pose, expression and picture quality. Next, we calculate feature vectors and learn by AHA. Finally, we confirm cognitive rate. The results of experiments, we can compare a proposed method of other methods, and we can confirm that the proposed method is superior to the existing method.
추정호,강대성 동아대학교 공과대학부설 정보통신연구소 2007 情報技術硏究所論文誌 Vol.15 No.1
In this paper, we propose automatic paper recognition system for office automation. The recognized process is recognized the character using artificial hippocampus algorithm. Proposed system will be able to work in bank, school, administration, etc. The machine with built-in camera is received paper and recognized the character in paper. This central process control module connect with paper management server computer. This computer display the recognized result and saves the record. The saved records will be able to apply in various application.
Computation of the Slow Viscous Flow about a Circular Arc
추정호(Jeong-ho Chu),김문언(Moon-Uhn Kim),최도형(Do Hyung Choi) 한국전산유체공학회 1997 한국전산유체공학회 학술대회논문집 Vol.1997 No.-
와도-유량함수를 이용하여 원호 주위를 흐르는 점성류를 레이놀즈 수 30까지 계산하였다. 점점 주위에서 발산하는 와도를 원호의 곡률 특성을 잘 표현하는 국소점근식을 이용하여 해석적으로 처리하였다. 그리고, 물체로부터 멀리 떨어진 곳에서는 물체가 받는 힘과 관련이 있는 Oseen 유동을 이용한 경계조건을 사용하였다. 이러한 해석해와 수치해의 접합으로 여러 입사각의 유동에 대한 원호 주위에서 박리를 보다 안정적이고 효율적으로 고찰하였다.
김다애,추정호 한국금융공학회 2023 금융공학연구 Vol.22 No.3
This paper introduces a method for evaluating variance swap using partial differential equation. It introduces how to evaluate not only vanilla variance swaps but also variance swaps with corridors or caps. The payoff at expiry of variance swaps is determined by realized volatility and not by stock price level. In addition, corridor variance swaps and capped variance swaps have path dependencies. In case of capped variance swaps volatility is considered as an additional underlying asset. These features are modeled as partial differential equations and the equation is solved by finite difference methods. It is also presented to compare the results of the case where the volatility is constant and the case where it is a local volatility surface by the Monte Carlo method.