칼럼 - 미래기술축산 위한 전문 컨설팅업체 육성 필요

이득환,Lee, Deuk-Hwan 한국오리협회 2015 오리마을 Vol.148 No.-

유전 및 육종 : 특정 종돈집단의 임신기간, 이유후초종부일, 총산자수 및 사산에 대한유전모수 추정

이득환 ( Deuk Hwan Lee ),손지현 ( Ji Hyun Son ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5

Estimate breeding value can be used as single trait animal model was developed directly using the Fortran language program. The program is based on data computed by using the indirect method repeatedly. The program develops a common algorithm and imprves efficiency. Algorithm efficiency was compared between the two programs. Estimated using the solution is easy to farm and brand the service, pedigree data base was associated with the development of an improved system. The existing program that uses the single trait animal model and the comparative analysis of efficiency is weak because the estimation of the solution and the conventional algorithm programmed through regular formulation involve many repetition; therefore, the newly developed algorithm was conducted to improve speed by reducing the repetition. Single trait animal model was used to analyze Gauss-Seidel iteration method, and the aforesaid two algorithms were compared thorough the mixed model equation which is used the most commonly in estimating the current breeding value by applying the procedures such as the preparation of information necessary for modelling, removal of duplicative data, verifying the parent information of based population in the pedigree data, and assigning sequential numbers, etc. The existing conventional algorithm is the method for reading and recording the data by utilizing the successive repetitive sentences, while new algorithm is the method for directly generating the left hand side for estimation based on effect. Two programs were developed to ensure the accurate evaluation. BLUPF90 and MTDFREML were compared using the estimated solution. In relation to the pearson and spearman correlation, the estimated breeding value correlation coefficients were highest among all traits over 99.5%. Depending on the breeding value of the high correlation in Model Ⅰ and Model Ⅱ, accurate evaluation can be found. The number of iteration to convergence was 2,568 in Model Ⅰ and 1,038 in Model Ⅱ. The speed of solving was 256.008 seconds in Model Ⅰ and 235.729 seconds in Model Ⅱ. Model Ⅱ had a speed of approximately 10% more than Model Ⅰ. Therefore, it is considered to be much more effective to analyze large data through the improved algorithm than the existing method. If the corresponding program is systemized and utilized for the consulting of farm and industrial services, it would make contribution to the early selection of individual, shorten the generation, and cultivation of superior groups, and help develop the Hanwoo industry further through the improvement of breeding value based enhancement, ultimately paving the way for the country to evolve into an advanced livestock country.

빅데이터(Big-data)에 나타난 감성 분석

이득환 ( Deuk Hwan Lee ),강형구 ( Hyoung Goo Kang ),이창민 ( Chang Min Lee ) 한국금융공학회 2013 한국금융공학회 학술발표회 Vol.2013 No.1

본 연구는 2011년 1월 1일부터 2013년 1월 4일까지 빅데이터(Big-data)에 나타난 9가지 감성(Sentiment)들의 특징을 자세히 살펴 보았다. 기존에는 감성들의 추출에 대한 어려움으로 인해 감성들이 실제 주식 시장에 끼칠 수 있는 영향력이 등한시 되어 있는 실정이다. 본 연구에서는 Daum-soft에서 제공 받은 감성 자료를 대상으로 자기상관 분석, 주성분 분석, VAR 추정을 실시 하여 감성이 가지고 있는 특징을 실증 분석한다. 그 결과 감성들은 일정한 패턴을 가지고 있음을 확인 할 수 있었다. 즉, 자기상관 분석 결과 감성들의 자기회귀성과 주기를 확인 할 수 있었으며 주성분 분석 결과 9가지 감성들이 긍정성, 부정성으로 묶일 수 있음을 보였다. 마지막으로 VAR분석을 통해 음의 자기회귀 계수를 가짐을 알 수 있었으며 상호 다양한 시차에서 영향을 주고 받음을 확인 할 수 있었다. 이는 빅데이터(Big-data)에 나타난 주가 정보를 담고 있는 감성들은 무작위적인 정보의 나열이 아니라 주식시장과 흐름을 같이 하고 있으며 과거값을 통해 예측이 가능함을 시사하고 있다. We study thoroughly looked into nine different sentiments found in approximately 190 million pieces of Big-data gained from January 1 in 2011 to January 4 in 2013. In the past, it was not easy to extract the sentiments and because of that, until now, any influences that the sentiments could actually have on the stock market have been neglecting. In the study, with the sentiment references provided by Daum-soft, features of the sentiments were examined by autocorrelation analysis, principle component analysis and VAR. According to the results, we find that the sentiments were observed to have some regular patterns. In other words, the findings from the autocorrelation analysis proved autocorrelation and period of the sentiments while the results from the principle component analysis reported that the nine sentiments could be connected with positivity and negativity. Lastly, via VAR, the sentiments appeared to have negative autoregressive parameters as they would be affected by each other at various lag-times. Those results from the analyses are indicating that the sentiments with stock information appearing on Big-data would go with changes in the stock market as they can be possibly estimated based on values from the past. When we apply the availability of Bid-data to the financial market, if we could make a good use of autocorrelation of either the financial market-related information or the sentiments, the findings in this study will be a huge contribution to researches on the financial market variables as stock price and volatility as well as actual business performances in the market.

건물 구조체에 따른 히트펌프 시스템 계절별 에너지 효율 계수

이득환(Lee Deuk-Hwan),유호경(Yu Ho-Kyung),한세희(Han Sae-Hee),최현웅(Choi-Hyun Woong),김재민(Kim Jae-Min) 한국건축친환경설비학회 2013 한국건축친환경설비학회 논문집 Vol.7 No.4

While nominal COPs which are determined under a steady static condition cannot represent the actual system efficiency of heat pumps, seasonal energy efficiency ratings (SEER) are used for the more realistic performance assessment. SEERs are calculated by taking account of building energy partial load patterns which are determined by outdoor temperature bin and simplied heating/cooling load calculation. Although SEERs could be used for the assessment of the system performance, it is questionable that the nature of the simplified calculation provides accep accuracy of the results taking account of building configuration(e.g. thermal capacity, window ratio etc), regional climate conditions etc). The purpose of this study is to test the applicability of SEERs of heat pump systems integrated within a building. The KS C 9306 method for calculating SEERs was investigated and used for the comparison analysis with the detailed simulation tool Energyplus in terms of system efficiency rates according to the partial load profiles.

성년후견제도에 대한 각국의 입법과 우리나라의 그에 대한 민법개정에서의 시사점

이득환 ( Deuk Hwan Lee ),박민제 ( Min Je Park ) 한양대학교 법학연구소 2009 법학논총 Vol.26 No.4

As aging society is advancing, caring the aged people becomes the urgent question. In these society, self-determination is respected about their disposing wealth and their revealing opinion. The sane and remained capacity must be fostered to strengthening their quality of life. In order to do that, our country prepares the system of the incompetent. But such a system is inadequate in various directions. In many prier countries such as France, England, Germany, Japan and so on, revised law of the incompetent. Instead of the system of the incompetent, the system of major guardian is prepared. In this paper, I studied various system of various countries. Through studying those system, I expressed my opinion about the necessity of introducing the useful system. Decreasing or using one`s judgment, for example senile dementia, is subjected to change according to the lapse of the time, and it seems that no one can keep his judgment unchanged. The elderly are usually losing their judgment with repeating recovery and decrease. In fact, they are declared incompetent when someone wants to obtain the status of a legal representative for the aged person` profits. The system, therefore, are unreasonable when considering the change of one`s judgment and the actual condition. And also it must be existed a lot of juristic act which should be accompanied by one`s judgment. The attitude disregarding the legal clauses of the incompetent in the Civil Law is against the senile welfare whose basic idea is to support the elderly to maintain their daily life in our society. The quasi-incompetent, incompetent and legal guardian system is not considered suitable for medical treatment and property management of the elderly. The new system, which can support the elderly to maintain their lives voluntarily even though they are losing their capacity of judgment, has to be adopted. The main purpose of this is not only to analyze the problems found in the present senile support system, incompetent system and guardian system, but also to analyze the guardian system through the comparative method of various countries` law. By respecting the surviving ability of the elderly, their life can be managed by far more qualitative method. The restriction of an ability by law must be minimized. The author suggests that our ability system and Guardianship in Civil Law in act should be revised sooner or later, and suggests that we should make the system of Care and Control in Civil Law by studying various system comparatively.

빅데이터에 나타난 감성 분석

이득환 ( Deuk Hwan Lee ),강형구 ( Hyoung Goo Kang ),김수현 ( Soo Hyun Kim ),이창민 ( Chang Min Lee ) 한국금융공학회 2013 금융공학연구 Vol.12 No.2

본 연구는 2011년 1월 1일부터 2013년 1월 4일까지 빅데이터(Big-data)에 나타난 9가지 감성(Sentiment)들의 특징을 자세히 살펴보았다. 기존에는 감성들의 추출에 대한 어려움으로 인해 감성들이 실제 주식 시장에 끼칠 수 있는 영향력이 등한시 되어 있는 실정이다. 본 연구에서는 Daum-soft에서 제공 받은 감성 자료를 대상으로 자기상관 분석, 주성분 분석, VAR 추정을 실시하여 감성이 가지고 있는 특징을 실증 분석한다. 그 결과 감성들은 일정한 패턴을 가지고 있음을 확인 할 수 있었다. 즉, 자기상관분석 결과 감성들의 자기회귀성과 주기를 확인 할 수 있었으며 주성분 분석 결과 9가지 감성들이 긍정성, 부정성으로 묶일 수 있음을 보였다. 마지막으로 VAR분석을 통해 음의 자기회귀 계수를 가짐을 알 수 있었으며 상호 다양한 시차에서 영향을 주고받음을 확인 할 수 있었다. 이는 빅데이터(Big-data)에 나타난 주가 정보를 담고 있는 감성들은 무작위적인 정보의 나열이 아니라 주식시장과 흐름을 같이 하고 있으며 과거값을 통해 예측이 가능함을 시사하고 있다. We study thoroughly by looking into nine different sentiments found in approximately 190 million pieces of Big-data gained from January 1st, 2011 to January 4th, 2013. In the past, it was not easy to extract the sentiments and because of that, until now, any influences that the sentiments could actually have on the stock market have been neglecting. In the study, with the sentiment references provided by Daum-soft, features of the sentiments were examined by autocorrelation analysis, principle component analysis and VAR. According to the results, we find that the sentiments are observed to have some regular patterns. In other words, the findings from the autocorrelation analysis prove autocorrelation and period of the sentiments while the results from the principle component analysis report that the nine sentiments could be connected with positivity and negativity. Lastly, via VAR, the sentiments appeare to have negative autoregressive parameters as they would be affected by each other at various lag-times. Those results from the analyses indicate that the sentiments with stock information appearing on Big-data would integrate with changes in the stock market as they can be possibly estimated based on values from the past.

ISO 13790 한국형 유효계수 결정 방법론에 관한 연구

이득환(Deuk-Hwan Lee),최현웅(Hyun-Woong Choi),강소라(So-Ra Kang),유호경(Ho-Kyung Yu),김재민(Jae-Min Kim) 한국건축친환경설비학회 2014 한국건축친환경설비학회 논문집 Vol.8 No.3

Utilisation factors used in ISO 13790 are determined by time constant and gain/loss ratios and should be redefined for climate condition to improve the accuracy of the heating/cooling loads in each region or country. The purpose of this study is to suggest reference time constants and dimensionless reference numerical parameters which are applicable for buildings in Korean context. Using Energy plus detailed simulation models were made representing high weight/high insulated rooms surrounded by external environment and a light weight (curtain wall type) room adjacent to internal environment. Equivalent models were made with an ISO 13790-based calculation tool in which numerous combinations of reference time constants and dimensionless reference numerical parameters can be tested. After examining the agreement between results from Energy plus simulation and those of the ISO 13790-based tool, a set of reference time constants and dimensionless reference numerical parameters are suggested which reduce the error rates significantly. This paper presents the methodology of new utilisation factors calculation and outcomes of the examination.

유전 및 육종 : 가축 유전체정보 활용 종축 유전능력 평가 연구 -표지인자 효과 추정 모의실험

이득환 ( Deuk Hwan Lee ),조충일 ( Chung Il Cho ) 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.1

본 연구는 유전체분석에 대해 모의실험한 연구로써 Reference Population(RP)이 구성되었을 때, 표현형 자료가 없고 유전체자료만 있는 Juven1 또는 Juven2 세대에 대해 유전평가의 정확도에 대해 알아보고자 연구를 실시하였다. 모의실험의 가정으로 염색체는 1개이며 염색체길이는 100cM로 가정하였다. 초기의 유효집단의 수는 100두의 다형성이 없는 초기집단에서 유전자 효과가 없는 표지인자(Marker)를 0.1cM 및 0.5cM 간격으로 균등하게 단일 염기 돌연변이에 의한 다형성을 발생시켰고 유전자 효과가 있는 QTL 좌위는 Marker와 동수의 비율로 임의위치를 지정하여 돌연변이에 의한 변이성을 생성하였으며 이때 유전자 효과는 Gamma 분포함수(scale=1.66, shape=0.4)에서 생성하였다. 배우자(gamete) 형성과정에서 Haldane의 가정하에 유전자 재조합을 생성하였으며 돌연변이 발생율은 Marker 및 QTL 좌위에서 2.5×10(-3) 및 2.5×10(-5)의 확률로 발생시켜 1000세대까지 세대번식을 유지하였다. 이 후 1001세대부터 1004세대까지 세대당 2000두의 자손을 생성하였으며 이 때 유전력을 0.1 및 0.5의 가정하에 1001~1002세대에서 표현형 자료를 생성하였고, 1003~1004세대는 오직 유전체자료만 생성하였다. Bayesian 방법을 이용하여 개체별 육종가를 추정하였으며 표지인자간 거리(0.1cM, 0.5cM), 유전력(0.1, 0.5) 및 반형매 집단크기(20두, 4두)에 따라 참육종가와 추정 육종가간의 상관으로 표현되는 육종가 정확도에 대해 비교한 결과 1003세대에서 표지인자간 거리가 0.1cM 및 0.5cM일 때 육종가의 정확도는 각각 0.87, 0.81였고, 유전력이 0.1 및 0.5 일 때 각각 0.87, 0.94로 추정되었으며, 반형매 집단의 크기가 20두 일 때 0.87, 4두 일 때 0.84로 추정되었다. 위의 결과로 미루어 보아 다량의 SNP 표지정보 및 반형매 집단의 크기가 클수록 즉, 혈연계수가 높은 집단일 때 육종가의 정확도는 높게 나타났다. 유전체선발의 활용시 비교적 높은 정확도로써 조기선발이 가능하며 이로 인한 세대간격을 단축시킬 수 있어 개량의 효율을 높일 수 있을 것으로 사료된다. 반면에 유전체선발은 분석비용이 비싸며, 지속적인 유전체 선발시 특정유전자 선호로 인한 유전적 부동(Genetic Drift) 현상이 발생될 수 있기 때문에 지속적인 SNP 발굴에 대한 노력이 필요한(Meuwissen 2003) 단점이 있으나 한우 또는 젖소와 같은 대가축과 같이 세대간격이 긴 가축에서 유전체선발 할 경우 조기선발로 인한 세대간격 단축과 유전평가의 높은 정확도(0.8이상)로 인해 개량의 효율을 극대화 할 수 있을 것으로 사료된다. This simulation study was performed to investigate the accuracy of the estimated breeding value by using genomic information (GEBV) by way of Bayesian framework. Genomic information by way of single nucleotide polymorphism(SNP) from a chromosome with length of 100cM were simulated with different marker distance(0.1cM, 0.5cM), heritabilities(0.1, 0.5) and half sibs families(20 heads, 4 heads). For generating the simulated population in which animals were inferred to genomic polymorphism, we assumed that the number of quantitative trait loci(QTL) were equal with the number of no effect markers. The positions of markers and QTLs were located with even and scatter distances, respectively. The accuracies of estimated breeding values by way of indicating correlations between true and estimated breeding values were compared on several cases of marker distances, heritabilities and family sizes. The accuracies of breeding values on animals only having genomic information were 0.87 and 0.81 in marker distances of 0.1cM and 0.5cM, respectively. These accuracies were shown to be influenced by heritabilities (0.87 at h2=0.10, 0.94 at h2=0.50). According to half sibs`` family size, these accuracies were 0.87 and 0.84 in family size of 20 and 4, respectively. As half sibs family size is high, accuracy of breeding appeared high. Based on the results of this study it is concluded that the amount of marker information, heritability and family size would influence the accuracy of the estimated breeding values in genomic selection methodology for animal breeding.

히트펌프의 계절별 시스템 효율계수에 관한 연구

이득환(Lee Deuk Hwan),유호경(Yu Ho-Kyung),한세희(Han Sae Hee),최현웅(Choi Hyun Woong),김재민(Kim Jae Min) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6

In order to evaluate the performance of energy systems under the actual operation condition, coefficient of performance), SSEER(Seasonal System Energy Efficiency ratio for cooling) and System Coefficient of Performance can be used. SSEER/SCOP involves partial load coefficient of performance, energy use of fan/pump and loss of duct/pipes. represents the performance of energy systems. This paper presents the results of comparison analysis on the SSEER/SCOPs and SEERs of air-air heat pump systems in Korean context.

한우 암소의 흉위, 초음파 측정 배장근단면적, 등지방두께, 근내지방도에 대한 발육곡선 추정 및 신체충실지수 효과

이득환 ( Deuk Hwan Lee ),이길환 ( Gil Hwan Lee ),조충일 ( Chung Il Cho ),김내수 ( Nae Soo Kim ) 한국동물자원과학회 2008 한국축산학회지 Vol.50 No.5