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        • KCI등재

          임의중단된 이변량 지수모형의 독립성에 대한 붓스트랩 검정

          김달호,조길호,조장식 한국통계학회 1996 응용통계연구 Vol.9 No.2

          본 논문에서는 임의중단된 자료가 관찰되는 경우 Marshall과 Olkin의 이변량 지수모형의 독립성에 대한 붓스트랩 검정절차를 제안하고, 몬테칼로 모의실험을 통하여 제안된 붓스트랩 검정법과 기존의 다른 검정법들의 검정력을 비교하였다. In this paper, we consider the Marshall and Olkin's bivariate exponential model under random censorship for the distribution of failure times of a system with two components. We propose a bootstrap testing procedure for independence and compare the powers of it with other tests via Monte Carlo simulation.

        • KCI등재후보
        • KCI등재
        • KCI등재

          Noninformative priors for the common mean in the bivariate normal distribution

          김달호,강상길,이우동 한국통계학회 2009 Journal of the Korean Statistical Society Vol.38 No.2

          In this paper, we consider some noninformative priors for the common mean in a bivariate normal population. We develop the first-order and second-order matching priors and reference priors. We find that the second-order matching prior is also an HPD matching prior, and matches the alternative coverage probabilities up to the second order. It turns out that derived reference priors do not satisfy a second-order matching criterion. Our simulation study indicates that the second-order matching prior performs better than the reference priors in terms of matching the target coverage probabilities in a frequentist sense. We also illustrate our results using real data.

        • KCI우수등재

          신뢰성있는 지역통계 추정을 위한 제언

          김달호,김남희,Kim, Dal-Ho,Kim, Nam-Hee 한국데이터정보과학회 1998 한국데이터정보과학회지 Vol.9 No.2

          통계청에서 조사 발표한 '96가구소비실태조사의 지역결과 자료에 대한 통계적 신뢰도를 분석하며, 전국 혹은 넓은 지역을 대상으로 하는 조사에서 소지역 통계의 오차를 줄여 신뢰도를 높이는 추정방법을 제안한다. We analyze statistical reliability about local area results of '96 Survey of Family Consumption Behavior by the National Statistical Office. Also, we suggest reliable estimation procedures for reducing statistical errors in local ares estimation problem.

        • 舍巖鍼法의 變形에 關한 硏究

          김달호,김중한 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

          「Nei Jing(內徑)」 first defined the interrelationship of the true and the false between evil factor affecting health(邪氣) and vital essence energy(精氣). According to 「Nei Jing(內徑)」, the above interrelationship is explained as 'If state of evil domination is considered as asthenia-syndrome(邪氣盛則實), if the consumption of healthy energy is considered as asthenia-syndrome(精氣則虛).' 「Nei Jing(內徑)」proposed major features of the medical treatment by 'regluate the vatal energy of asthnia and sthenia, treat the sthenia-syndrome by prugation, and treat the asthenia-syndrome by therapy of invigoration'. The above interrelationship was interpreted as 'treat the asthenia-syndrome of child organ by invigorating the mother organ' in the 69th of 「The Classic on Difficulty」(難經 六十九難). Go-Mu(高武) of Myung-dynasty describe therapy for invigoration and purgation of itself-meridian, which locating acupuncture points according to the Theory of of Five Element in the five shu points of itself-meridian, based on the generation in the 「A Synthetical Book of Acupuncture and Moxibustion」. Sae-hyun Jang(張世賢) further extended locating acupuncture points of the five shu points to the other-meridian in the 「Geo Jung Do Ju Nan Gyung(校正圖註難經)」. Sa-aAhma's 5 Element Acupuncture Method(舍巖五行鍼法) was originated in 1644, the middle of the Yi-dynasty. It linked the reinforcing and reducing in acupuncture therapy which incorporated the ashenia-syndrome and sthenia-syndrome of the hollow organs, based on principle of the Yin Yang 5 Elements Theory(陰陽五行學說), not only to the generation in the 5 element(相生關係) but also to the restriction in the 5 element(相克關係). Furthermore it was devised for the medical treatment by combining therapy for invigoration and purgation of itself-meridian with that of the other-meridian. Even though many original forms(正形) of the therapy for invigoration and purgation of the Yin Yang 5 Element Theory comply with the principle of the generation and the restriction based on the principle of the Yin Yang 5 Element Theory are available, variational form(變形) are also recognized by examining the nature of the Sa-Ahm's 5 Element Acupuncture Method(舍巖五行鍼法). For this reason, it is very difficult to understand the Sa-Ahm's 5 Element Acupuncture Method(舍巖五行鍼法) thoroughly, therefore, those variational forms are obstacles for the beginners to study the Sa-Ahm's 5 Element Acupuncture Method. In order to understand the principle of the practical clinical application of the Sa-Ahm's 5 Element Acupuncture Method, this study investigated which principle was based on the variations of the locating acupuncture point's method for the acupuncture prescription.

        • KCI등재

          중소기업실태조사를 위한 표본설계

          김달호,황진섭,곽상규,Kim, Dal-Ho,Hwang, Jin-Seub,Kwak, Sang-Gyu 한국데이터정보과학회 2010 한국데이터정보과학회지 Vol.21 No.6

          In 2009 the former three surveys on small and medium enterprises were combined into one survey to reduce the response burden of enterprises. In this report, we study a sample design for 2009 survey on actual state of small and medium enterprises (SMEs). However, the differences between the manufacturing industries and knowledge-based service industries are so large that we need to consider separate populations in the survey. The total sample size is decided as 10,000 in new survey design for integration. We allocate the sample sizes for the first stratum based on CV and then allocate the sample sizes for the second stratum using root proportional formula. Also we calculate survey weights and propose the formula for the estimators as well as standard errors using weights for each characteristic. 중소기업의 조사부담 완화를 위하여 2009년부터 기존의 "중소기업실태조사", "중소기업인력실태 조사" 및 "중소기업사업전환실태조사"를 통합하여 하나의 조사로 수행하게 되었다. 통합 중소기업실태조사를 위한 새로운 표본설계에서 중소제조업과 지식기반서비스업 부문이 너무 상이하므로 별개의 모집단을 구성하였으며, 전체 표본수는 10,000개로 하였다. 변동계수를 사용한 배분공식으로 1차 층인 종사자규모 산업분류별로 표본을 배분하고 루트비례배분을 사용하여 2차 층인 지역별로 표본의 크기를 결정하였다. 새로운 표본설계에서는 가중치를 계산하였고 이를 이용한 추정량과 추정오차 공식을 유도하여 기존의 단순집계를 벗어나 종사자 규모별, 업종별 그리고 지역별 추정과 추정의 정도에 대한 평가를 가능하게 하였다.

        • KCI등재후보

          Bayesian Model Selection in the Unbalanced Random Effect Model

          김달호,강상길,이우동 한국데이터정보과학회 2004 한국데이터정보과학회지 Vol.15 No.4

          In this paper, we develop the Bayesian model selection procedure using the reference prior for comparing two nested model such as the independent and intraclass models using the distance or divergence between the two as the basis of comparison. A suitable criterion for this is the power divergence measure as introduced by Cressie and Read(1984). Such a measure includes the Kullback -Liebler divergence measures and the Hellinger divergence measure as special cases. For this problem, the power divergence measure turns out to be a function solely of , the intraclass correlation coefficient. Also, this function is convex, and the minimum is attained at . We use reference prior for . Due to the duality between hypothesis tests and set estimation, the hypothesis testing problem can also be solved by solving a corresponding set estimation problem. The present paper develops Bayesian method based on the Kullback-Liebler and Hellinger divergence measures, rejecting when the specified divergence measure exceeds some number . This number is so chosen that the resulting credible interval for the divergence measure has specified coverage probability . The length of such an interval is compared with the equal two-tailed credible interval and the HPD credible interval for with the same coverage probability which can also be inverted into acceptance regions of . Example is considered where the HPD interval based on the one-at- a-time reference prior turns out to be the shortest credible interval having the same coverage probability.

        • KCI등재

          경북인의 생활과 의식조사 표본설계

          김달호,조길호,황진섭,정경하,Kim, Dal-Ho,Cho, Kil-Ho,Hwang, Jin-Seub,Jung, Kyung-Ha 한국데이터정보과학회 2009 한국데이터정보과학회지 Vol.20 No.6

          2007년 경북인의 생활과 의식조사를 위한 표본설계를 연구하였다. 기존 조사에 대한 분석을 바탕으로 새로운 표본설계를 위한 여러 가지 사항을 검토하였다. 최근 시행된 2005년 인구주택총조사의 10% 표본조사자료를 조사모집단으로 사용하였고, 2006년 조사결과를 바탕으로 3가지 주요 항목 (경제활동상태, 연간소득수준, 주택소유)을 이용하여 표본조사구수에 대한 추정의 정도를 제시하고, 여러가지 층별 표본 배분을 검토한 후 비례배분을 사용하여 층별로 표본을 배분하고 적절한 표본의 크기를 결정하였다. 새로운 표본설계에서는 가중치를 계산하였고 이를 이용한 추정량과 추정오차 공식을 유도하여 기존의 단순집계를 벗어나 시군별 그리고 특성별 추정과 추정의 정도에 대한 평가를 가능하게 하였다. We made a new sample design for life and consciousness survey of Kyungpook people in 2007. We used the 10% sample survey data of 2005 population and housing census as a survey population. After stratification, we allocate proportionally samples within strata after examining various characteristics in previous survey, which includes economic activity state, an income level per year, and housing possession. And we calculated weight in a new sample design and derived estimators and a formula of standard error using the weights.

        • KCI등재

          상가권리금 현황조사를 위한 표본설계 연구

          김달호,우남교,조준우,Kim, Dal Ho,Woo, Namkyo,Jo, Junwoo 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.6

          본 연구는 소상공인과 임차상인 보호정책을 지원하고, 권리금 분쟁소송 등에 참고자료로 활용할 뿐만 아니라 상가권리금 현황 파악을 위한 최초 조사를 실시하기 위한 표본설계 연구이다. 개별 임차 사업체 단위로 발생하는 권리금의 특성상 통계청의 전국사업체조사를 모집단으로 활용 하였으며, 우선적인 정보 제공이 필요한 7개 도시지역을 반영하였다. 전체 표본수는 8,000개로 하였으며, 7개 도시지역을 부차모집단으로 하고 지역별 상권별 표본수는 비례배분 하였으며, 상권내 업종은 제곱근비례배분 하였다. 목표오차를 활용하여 최종 표본수를 조정 하였으며, 표본설계가중치를 이용한 권리금 평균 추정량과 추정오차, 구간추정 공식을 유도하였으며, 이를 통해 도시별 상권별 및 업종별 통계 추정과 추정의 정도에 대한 평가를 가능하게 하였다. In this paper, we study a sample design for survey on goodwill in retail properties to provide a protecting policy for small traders and tenants, to use basic data for a dispute case related to goodwill. Since goodwill in retail properties is occurred by individual rent company, we use the census on establishments from the Statistics Korea as population. First of all, we consider preferentially seven metropolitan cities in which there are more than half of population. Total sample size is decided as 8,000. We allocate the sample size for markets as stratum in each city using proportional formula and the sample size for industrial classifications in each market using root proportional formula. Also we compute survey weights and calculate estimators, standard errors and interval of estimators for each characteristic such as type of establishments and market in seven metropolitan cities.

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