KRUGLYAK과 LANDER의 유전연관성 비모수 방법과 반복 자료를 고려한 가중 회귀분석법의 비교

최은경,송혜향,Choi, Eun-Kyeong,Song, Hae-Hiang 한국통계학회 2008 응용통계연구 Vol.21 No.1

The ordinary least squares regression method of Haseman and Elston(1972) is most widely used in genetic linkage studies for continuous traits of sib pairs. Kruglyak and Lander(1995) suggested a statistic which appears to be a nonparametric counterpart to the Haseman and Elston(1972)'s regression method, but in fact these two methods are quite different. In this paper the relationships between these two methods are described and will be compared by simulation studies. One of the characteristics of the sib-pair linkage study is that the explanatory variable has only three different values and thus dependent variable is heavily replicated in each value of the explanatory variable. We propose a weighted least squares regression method which is more appropriate to this situation and the efficiency of the weighted regression in genetic linkage study was explored with normal and non-normal simulated continuous traits data. Simulation studies demonstrated that the weighted regression is more powerful than other tests. 형제 쌍(sibpair)의 연속형 형질(continuous traits) 자료를 이용한 유전연관성 검정 법(linkage test)으로서 Haseman과 Elston (1972)의 최소제곱(ordinary least square, OLS) 회귀분석법이 주로 사용된다. 비모수적 방법으로서 제시된 Kruglyak과 Lander (1995)의 검정통계량은 Haseman과 Elston (1972)의 방법에 대응되는 방법처럼 보이지만 실제로는 매우 다르다. 본 논문에서는 Kruglyak와 Lander (1995)의 검정통계량과 Haseman과 Elston (1972)의 검정통계량의 관계를 설명하고 모의실험으로 두 검정통계량의 검정력을 비교한다. 유전연관성에 사용되는 형제 자료의 특징은 한정된 설명변수의 값에 매우 많은 자료가 반복(replicated)되었다는 점이며, 이러한 반복 자료에 더욱 적절한 가중 회귀분석법을 제안한다. 가중 회귀분석법의 효율성을 정규분포 또는 정규분포가 아닌 연속형 형질 모의실험 자료로 알아본 결과 형제 쌍 자료의 유전연관성 검정에서 가중 회귀분석법이 다른 검정법들보다도 검정력이 높음을 확인하였다.

강활(Ostericum koreanum)과 지리강활(Angelica purpuraefolia)의 미숙종자로부터 고빈도의 체세포배 발생과 식물체 재분화

최은경,박학봉 한국식물생명공학회 1995 식물생명공학회지 Vol.22 No.5

The objective of this study is to establish an efficient celll culture system for somatic embryogenesis in Ostericum koreanum and Angelica purpuraefolia. The highest frequency of embryogenic callus on immature seeds of O. konanum and A, purpuraefolia. was obtained when seeds were cultured on MS medium containing 0.1 mg/L 2,4-D and 0.1 mg/L BA. However somatic embryos were formed directly from the edge of cotyledon and hypocotyl of plant which regenerated on medium supplemented with 0.1-3.0 mg/L NAA. Immature seed explane cultured at 25$\pm$2$^{\circ}C$ after 10 days treatment at 5$^{\circ}C$ produced embryogenic callus and somatic embryos, and these differentiated into whole plane. Addition of glutamine and coconut milk to media did not enhance the frequency of somatic embryogenesis in immature seed cultures of A. purpuraefolia. However in immature seed culture of O. koreanum, the frequency of somatic embryogenesis were increased on media supplemented with glutamine and 10% coconut milk. Especially addition of glutamine to the medium substituted effect of NH$_4$N0$_3$ in constast to coconut milk. The highest frequency of conversion somatic embryos into plantlet was 89.1% on MS basal medium Embryogenic calli were grown vigorously when maintained on medium with 0.01 mg/L 2,4-D and 0.01 mg/L BA. 본 실험은 강활(O. koreanum)과 지리강활(A.purpuraefolia)의 체세포배 발생을 위한 효율적인 세포배양시스템을 확립하고자 실시하였다. 강활과 지리강활의 개화후 3주된 미숙종자는 0.1 mg/L 2,4-D와 0.1 mg/L BA 혼용처리구에서 배발생캘러스와 체세포배 발생이 가장 양호하였고, 0.1-3.0mg/L NAA가 처리된 배지에서 재분화된 식물체의 자엽과 배축의 가장자리로부터 직접 체세포배가 발생하였다. 미숙종자의 휴면을 고려하여 저온처리한 결과, 5$^{\circ}C$에서 10일동안 저장 후, 25$\pm$2$^{\circ}C$에서 배양하였을 때 반응이 없던 배양체로부터 배발생 캘러스와 체세포배가 발생하였고 이 체세포배는 줄기와 뿌리로 분화되었다. 지리강활에서는 배지내 첨가한 glutamine과 coconut milk의 뚜렷한 효과가 인정되지 않았다. 그러나 강활의 경우에는 대조구에 비하여 glutamine과 10% coconut milk가 포함된 배지에서 체세포배 발생률이 항상되었고 특히 glutamine은 coconut milk에 비해 NH$_4$NO$_3$ 대체효과가 인정되었다. 체세포배의 器內 식물체전환율은 MS 기본배지에서 89.1%로 가장 양호하였고 배발생 캘러스의 증식용 배지로는 0.01 mg/L 2,4-D와 0.01 mg/L BA혼용처리구에서 가장 좋았다.

최근 꽃꽃이에 利用되는 乾燥, 加工, 異質素材에 關한 硏究

최은경,박학봉,박병모,박정선 한국화훼연구회 1996 화훼연구 Vol.5 No.2

This study was conducted to investigate use of dry, procssing and extraneous materials used in modern flower arrangments. 1.Dry, processing and extraneous materials were used greater in outdoor exhibition than in indoor exihibition. 2.For extraneous materials, utilization frequency was increased in order of cloth (18.5%), object(17.0%), line formed acryloyl or glass(9.8%) and artifical flower(9.2%). Utilization frequency of object was particularly increased from 15.8% to 27.7% in 1994-1995. 3.Actinidia arguta(39.3%) was the most frequently used for dry materials and Ribes mandshuricum, Preraria thunberiana and Smilax china were widly used. 4.For processing materials, Edgeworhia papyrifera(24.9%) was the most frequently used. In addition, utlization frequency of processing materials was increased in order of Kochia scoparia(8.25%), Ponicirus trifoliata(7.38%), Salix(4.30%). 5.Fruit and vegetable materials including dry, processing and extraneous materials were mainly used additional materials in flower arrangements. But the kind of fruit and vegetable materials was more various in the last 3 years.

아마릴리스의 미숙배와 인편조직으로부터 식물체 재분화

최은경,박학봉 한국식물생명공학회 1998 식물생명공학회지 Vol. No.

아마릴리스 'Picottee', 'White Christmas', 'Eldorado', 'Origin', Red Lion', 'Telstar', 'Crypsy'의 교잡배를 여러 농도의 2,4-D, NAA, BA, TDZ가 첨가된 MS배지에 배양한 결과, 0.5~3.0 ㎎/L 2,4-D에 비하여 0.5~3.0 ㎎/L NAA 처리구에서 줄기와 자구 분화가 양호하였다. 0.5㎎/L NAA 처리는 배양체로부터 높은 자구 형성율을 나타냈고, 줄기 분화율은 NAA 1.0㎎/L과 TDZ 2.0㎎/L 혼용처리구에서는 가장 높았다. 배지에 1.0~2.0㎎/L TDZ 첨가는 치상체당 더 많은 줄기를 분화시켰으나 1.0~2.0㎎/L BA 처리보다 뿌리의 발달은 억제되었다. 'Star Van Holland'의 인편을 배양했을 때 자구 형성은 0.5㎎/L NAA가 첨가된 배지에서 가장 효과적이었다. Immature hybrid embryos of H. hybridum, 'Picottee', 'White Christmas', 'Eldorado', 'Origin', 'Red Lion', 'elstar', 'Crypsy' were cultured on the MS medium supplemented with various concentrations of 2,4-D, NAA, BA and TDZ. Among the treatments, NAA were more effective for the shoot regeneration and bulblet formation than other treatment. Addition of 0.5 ㎎/L NAA was effective for bulblet induction from explant Shoot regeneration was most effective on the medium with 1.0㎎/L NAA and 2.0 ㎎/L TDZ. The addition of 1.0-2.0㎎/L TDZ induced numerous shoots per explant but strongly inhibited root development when compared to 1.0-2.0㎎/L BA. When bulb scale segments of 'Star Van Holland' was incubated, bulblet formation was the most effective on MS medium with 0.5㎎/L NAA.

Hyperfractionated Radiotherapy and Concurrent Chemotherapy for Stage III Unresectable Non Small Cell Lung Cancer : Preliminary Report for Response and Toxicity

최은경,김종훈,장혜술,김상위,서철원,이규형,이정신,김상희,고윤석,김우성,김동순,김원동,송군식,Choi, Eun-Kyung,Kim, Jong-Hoon,Chang, Hye-Sook,Kim, Sang-We,Suh, Cheol-Won,Lee, Kyoo-Hyung,Lee, Jung, Shin,Kim, Sang-Hee,Ko, Youn-Suk,Kim, Woo-Sung The Korean Society for Radiation Oncology 1995 Radiation Oncology Journal Vol.13 No.2

목적 : 절제 불가능한 제 3기 비소세포성 폐암에서 다분할 방사선 치료와 MVP 복합 항암요법의 동시 치료에 의한 종양관해율, 급성부작용, 생존기간에 미치는 효과를 알아보기 위하여 1993년 8월부터 전향성 연구(Prospective study)를 시작하였다. 방법: 본 연구는 제 III기의 비소세포성 폐암중 절제가 불가능한 환자를 대상으로 하여 다분할 방사선치료(120 cGy/fx, BID)를 6,480 cGy 시행하며 동시에 방사선치료 제1일과 28일에 2회의 MVP (Mitomycin C $6mg/m^2,$ Vinblastine $6mg/m^2,$ Cisplatin $60mg/m^2$) 복합 항암 요법을 시행하였다. 1994년 11월까지 등록된 62명의 환자에 대한 분석을 시행하였다. 병기는 IIIa 환자가 6명이고 나머지 56명은 IIIb 환자였으며 이중 흉막액이 있었던 환자는 11명, 쇄골상 임파선 전이가 있었던 환자는 10명으로 대부분의 환자가 IIIb 중에서도 진행된 환자였다. 조직학적 유형은 편평 상피암이 41명으로 $66\%$ 선암도 11명으로 $18\%$를 차지하였다. 결과: 52명의 환자중 끝까지 치료를 마친 환자는 48명으로 이 study의 compliance는 $77\%$이었다. 48명의 환자중 2명은 치료중 치료와 관계된 백혈구 감소로 인한 폐렴으로 사망하였다. 치료의 효과를 판정할 수 있었던 46명의 환자중 완전 관해(CR)는 10명으로 $22\%$의 높은 완전 관해율을 보였다. 부분 관해(PR)는 24명 $(52\%)$ 으로 다분할 방사선 치료와 동시 병행 MVP 항암요법에 의한 부분관해 이상의 관해율은 $74\%$ 이었다. 급성부작용 판정이 가능했던 46명중 가장 빈도가 높은 금성 부작용은 백혈구 감소로 1차 항암요법후 10명이 Grade 3, 4명이 Grade 4의 백혈구 감소를 보였으며 2차 항암요법에는 11명이 Grade 3, 9명이 Grade 4의 백혈구 감소를 보여 치료기간이 3일에서 5일 정도 지연되는 결과를 나타냈고 이중 2명은 폐렴으로 인한 패혈증으로 사망하였다. 치료중 체중감소를 보인 환자는 26명 $(54\%)$ 이었으며 이중 9명에서는 치료전에 비해 $10\%$ 이상의 체중감소를 보였다. 치료 1개월후 찍은 CT상 6명에서는 Grade 1의 방사선 폐렴이 관찰되었고 3명에서는 Grade 2로 Steroid 치료후 호전되었다. 결론: 이상의 결과 다분할 방사선 치료와 MVP 항암요법의 동시 치료가 이전의 항암요법후 다분할 방사선 치료하는 Sequential 방법에 비하여 높은 관해율을 보이고 특히 $22\%$의 높은 완전 관해율이 관찰되어 이 연구를 계속 진행함으로써 더 좋은 결과를 얻을 것으로 생각되며 급성 부작용에 대하여는 입원을 통한 Nutrition support와 G-CSF 등을 이용하여 백혈구 감소를 막을 수 있을 것으로 생각된다. Lung cancer study group at Asan Medical Center has conducted the second prospective study to determine the efficacy and feasibility of MVP chemotherapy with concurrent hyperfractionated radiotherapy for Patients with stage III unresectable non-small cell lung cancer(NSCLC). All eligible Patients with stage III unresectable NSCLC were treated with hyperfractionated radiotherapy(120 cGy/fx BID. 6480 cGy/54fx) and concurrent 2 cycles of MVP(Mitomycin C $6mg/m^2,$ d2 & d29.Vinblastine $6mg/m^2,$ d2 & d29, Cisplatin $60mg/m^2,$ dl & d28) chemotherapy. Between Aug. 1993 and Nov. 1994, 62 patients entered this study; $6(10\%)$ had advanced stage IIIa and $56(90\%)$ had IIIb disease including 11 with pleural effusion and 10 with supraclavicular metastases. Among 62 patients, $48(77\%)$ completed planned therapy. Fourteen patients refused further treatment during chemoradiotherapy. Of 46 patients evaluable for response, $34(74\%)$ showed major response including $10(22\%)$ with complete and $24(52\%)$ with partial responses. Of 48 patients evaluable for toxicity, $13(27\%)$ showed grade IV hematologic toxicity but treatment delay did not exceed 5 days Two patients died of sepsis during chemoradiotherapy. Severe weight loss(more than $10\%)$ occurred in 9 patients$(19\%)$ during treatment. Nine patients$(19\%)$ developed radiation pneumonitis Six of these patients had grade 1 (mild) Pneumonitis with radiographic changes within the treatment fields Three other patients had grade 11 Pneumonitis, but none of these patients had continuous symptoms after steroid treatment. Concurrent chemoradiotherapy for patients with advanced NSCLC was well tolerated with acceptable toxicity and achieved higher response rates than the first study, but rather low compliance $rate(77\%)$ in this study is worrisome. We need to improve nutritional support during treatment and to use G-CSF to improve leukopenia and if necessary. supportive care will be given as in patients, Longer follow-up and larger sample size is needed to observe survival advantage.

품질개념의 확대와 품질경영이 기업성과에 미치는 영향에 관한 연구

최은경 梨花女子大學校 法政大學 1995 經營學硏究 Vol.- No.11

The Analysis of Failure Pattern in Locally Advanced Stomach Cancer Treated with Surgery and Post-Op Chemotherapy: To Explore The Role of Post-Op Irradiation

최은경,장혜숙,서처원,이규형,이정신,김상희,김명환,민영열,김진천,이승규,박건춘,Choi, Eun-Kyung,Chang, Hye-Sook,Suh, Cheol-Won,Lee, Kyoo-Hyung,Lee, Jung-Shin,Kim, Sang-Hee,Kim, Hae-Ryun,Kim, Myung-Hwan,Min-Young-Il,Kim, Jin-Cheon,Lee, S The Korean Society for Radiation Oncology 1991 Radiation Oncology Journal Vol.9 No.2

수수로가 항암요법만으로 치료한 국소 진행된 위암환자에서 치료실패의 양상을 분석해봄으로써 수술후 방사선치료의 가능성을 알아보기 위하여 1989년 6월부터 1990년 8월까지 치료받은 107명의 환자를 대상으로 후향적 분석을 시행하였다. 제2기 ($T_2N_1,\;T_3N_0$)환자는 20이었으며 제3기 ($T_3N_1,\;T_3N_2$(환자는 87명이었다 16명은 수술후 추적이 어려워 91명에 대한 분석을 시행하였다. 모든 환자는 근치적 절제술을 시행받았고 이중 57명은 수술후 항암요법을 시행하고 24명은 계속적 추적 관찰만을 하였다. 국소재발율은 항암 요법 시행군에서는 $321\%$, 추적관찰군에서는 $24\%$로 차이가 없었고 원격전이는 항암요법 시행군에서는 $12\%$ 추적관찰군에서는 $26\%$로 항앙요법 시행군에서 원격 전이가 적어지는 것을 관찰할 수 있었다. 국소 재발환자의 $52\%$는 anastomosis site에서 재발하였고 원격 전이시 가장 많이 침범되는 장기는 간이었다. 아직 추적 관찰 기간이 짧으나 수술후 방사선 치료가 최소한 $20\%$이상의 환자에서 도움이 될것으로 생각된다. A Retrospective study to analyze the failure pattern in locally advanced stomach cancer, treated with radical surgery and post-op chemotherapy was perfomed. Among 107 patients who underwent radical gastrectomy in Asan Medical Center between June 1989 and August 1990. there were 20 stage II(T2NO, T2N1) and 87 stage III(T3N1, T3N2) and 91 patients were eligible for study. 57 patients treated with 6 cycles of postop adjuvant chemotherapy. Among 57 patients treated with postop adjuvant chemotherapy, local failure occurred in $21\%$ and distant failure in $12\%$. Among 34 patients who were not treated with postop chemotherapy, local failure occurred in $24\%$ and distant failure in $26\%$. Among 29 failures including 13 locoregional, 9 distant metastasis and 7 locoregional and distant metastasis, 11 cases recurred in the anastomotic site, 3 in the gastric bed,7 in the regional lymph nodes and peritoneal seeding occurred in 6 cases. The true incidences of gastric bed, nodal and peritoneal failures may be higher in the longer follow-up or reoperative or autopsy series. Our data sugest that postop chemocherapy is beneficial by reducing distant failure rate. Our data suggest that postop chemocherapy is beneficial by reducing distant failure rate. Postop adjuvant locoregional radiotherapy in addition to the systemic adjuvant therapy may reduce the local failure rate and potentially benefit in at least $20\%$ of patients who developed the local failure only.

MVP Chemotherapy and Hyperfractionated Radiotherapy for Stage III Unresectable Non-Small Cell Lung Cancer - Randomized for Maintenance Chemotherapy vs. Observation; Preliminary Report

최은경,장혜숙,서철원,이규형,이정신,김상희,최철준,고윤석,김우성,김원동,김삼현,손광현,Choi, Euk-Kyung,Chang, Hye-Sook,Suh, Cheol-Won,Lee, Kyoo-Hyung,Lee, Jung-Shin,Kim, Sang-Hee,Choi, Chul-Joon,Koh, Youn-Suck,Kim, Woo-Sung,Kim, Won-Dong,K The Korean Society for Radiation Oncology 1991 Radiation Oncology Journal Vol.9 No.2

제3기의 진행성 비소세포 폐암에서의 MVP항암 요법과 다분할 방사선 치료의 효과를 판정하기 위하여 1991년 1월부터 전향성 임의선택 연구(prospective randomized study)를 시작하였다. 본 연구는 제III기의 비소세포 폐암중 절제가 불가능한 환자를 대상으로 하여 MVP 항암요법(Mitomycin C 6mg/$m^2$, Vinblastine 6 mg/$m^2$, Cisplatin 60 mg/$m^2$)을 3회 시행한 후 다분할 방사선치료 (120 cGy/ft BID)를 6500 cGy까지 조사하였다. 방사선치료가 끝난 1개월 후 관해정도를 확인하여 추가 항암요법을 시행하는 군과 계속 관찰하는 군으로 임의 분류하였다. 1991년 8월까지 18명의 환자가 등록 되었으며 이중 2명은 2cycle의 항암요법 후 치료를 포기하여 16명의 환자에 대한 분석을 시행하였다. MVP항암요법에 대한 관해율은 $62.5\%$로 $50\%$에서는 부분관해 $12.5\%$에서는 minimal response를 보였다. 항암요법에 부분관해를 보인 3명중 1명에서는 방사선 치료후 완전관해를 보였으며 항암요법으로 병이 진행된 6명의 환자중 4명에서는 방사선 치료후에도 역시 병이 진행되는 것을 알 수 있었다. 모든 환자는 다분할 방사선 치료를 잘 견뎠으나 한 환자가 방사선 치료 한달 후 항암요법과 관련된 부작용으로 사망하였다. 아직 추적관찰 기간이 짧고 대상 환자가 많지 않다는 문제점은 있으나 본 연구를 계속 진행함으로써 유의한 결과를 얻을 수 있을 것으로 기대된다. To evaluate the effect of MVP chemotherapy and hyperfractionated radiotherapy in Stage III unresectable non small cell lung cancer (NSCLC), authors have conducted a prospective randomized study since January 1991, Stage IIIa or IIIb unresectable NSCLC patients were treated with hyperfractionated radiotherapy (120 cGy/fx BID) up to 6500 cGy following 3 cycles of induction MVP (Mitomycin C 6 mg/$m^2$, Vinblastine 6 mg/$m^2$, Cisplatin 60 mg/$m^2$) and randomized for either observation or 3 cycles of maintenance MVP chemotherapy. Until August 1991, 18 patients were registered to this study. 4 cases were stage IIIa and 14 were stage IIIb. Among 18 cases 2 were lost after 2 cycles of chemotherapy, and 46 were analyzed for this preliminary report. The response rate of induction chemotherapy was $62.5\%$ : partial response, $50\%$ and minimal response, $12.5\%$. Residual tumor of the one partial responder was completely disappeared after radiotherapy. Among 6 cases who were progressed during induction chemotherapy, 4 of them were also progressed after radiotherapy. All patients were tolerated BID radiotherapy without definite increase of acute complications, compared with conventional radiotherapy group. But at the time of this report, one patient expired in two month after the completion of the radiotherapy because of treatment related complication. Although the longer follow up is needed, authors are encouraged with higher response rate and acceptable toxicity of this treatment. Authors believe that this study is worthwhile to continue.

텅스텐(W)을 첨가한 Bi_4Ti_3O_1_2 (BTW) 박막의 미세구조 및 강유전 특성 변화

최은경,정원태,강민진,김두희,김현주,박문흠,구영건,김상수 昌原大學校 基礎科學硏究所 2002 基礎科學硏究所論文集 Vol.14 No.-

The un-doped Bi_4Ti_3O_12(BIT)and W-doped Bi_4Ti_3O_12(BTW) thin films were prepared on Pt(111)/Ti/Sio_2/Si(100) substrates by a sol-gel process amd spin caoting method. The films were analyzed by X-ray diffraction(XRD)and scanning electron microscopy(SEM). The ferroelectric hysteresis loops and the fatigue properties were obtained using a RT66A ferroelectric tester.X-ray diffraction measurements showed layered perovskite structures with a single phase in both films. The remanent polarization(2 P_r)and the coercive field(2 E_c)fo the BTW thin film were 16 u C/㎠ and 115 ㎸/㎝,respectively, with a applied field of 170 ㎸/㎝. In addition,the BTW thin film showed a low fatigue behavior up to 4.5×10^10 read/write cycles.The dielectric constant was measured 400 at 10 ㎑.

자연친화적 과학계발활동 프로그램의 적용이 과학에 대한 태도에 미치는 효과

최은경,문성배 부산대학교 사범대학 과학교육연구소 2006 科學敎育硏究報 Vol.33 No.-

This study organized a Nature Friendly Science Improvement Activity Program designed for the middle school students', and applied it to the relevant students, and then analyzed the effect of e program on science-related attitudes. The science club students in G middle school in Busan were sampled as the objects of the study consisting of one experiment group and one control group. The Nature Friendly Improvement Activity Program was applied to the experiment group as a club activity which was conducted every second Saturday from April to November. T-test for the pre-test was used to examine the homogeneity between groups, and t-test for the post-test was used to see the effects of applying a Science Improvement Activity Program on science-related attitudes between two groups. The following were the results of this study: First, the students participated in the Science Improvement Activity showed an increase in the science-related attitudes compared with those who didn't. At first, the experiment and control groups had the same level of sdence-related attitudes, but the former indicated a higher level of improvement in attitudes than the latter after taking part in the program, and showed a significant difference in the development of science-related attitudes regarding that of the control group. Second, women showed an effective increase in the science-related attitudes compared with men. Various activities with easily usable materials will be effective to enhance the science-related attitudes for women. Third, by applying a Nature Friendly Improvement Activity Program, science-related attitudes in the inactive group reluctant to participate science events were more positively established than those in the active group. These results of this study led to the following suggestions: It is expected that the development of various activities for science improvement will be effective in enhancing the science-related attitudes. And it is also expected that the development of activity programs and their active application should be done in order to provide science education according to each student's capacity from various angles in school.