Risk Factors for Predicting New-Onset Atrial Fibrillation in Persons Who Received Health Screening Tests

김학진,온영근,성지동,김준형,송영빈,이왕수,최진오,신대희,최성원,최재혁,한주용,김준수 대한심장학회 2007 Korean Circulation Journal Vol.37 No.12

Background and Objectives : Atrial fibrillation (AF) is the most common significant arrhythmia in the general population, and it is associated with increased cardiovascular morbidity and mortality. The incidence of and the risk factors for new- Subjects and Methods : We retrospectively analyzed 16,568 adults (median age 49 years, 10,685 males and 5,883 females) who had repeatedly received scree-ning tests for general health at the Health Promotion Center, Samsung Medical Center in Korea betwen March, 2001 and June, 206 (mean follow up duration: 44 months). Results: Sixty one cases had new-onset AF noted on the electrocardiogram (ECG). On the univariate analysis, age, male gender, a history of coronary artery disease and fibrinogen, and left atrium enlargement sen on ECG at baseline were significantly asociated with new-onset AF. After multivariable adjustment, the independent risk factors for predicting new-onset AF were male gender [odds ratio (OR): 3.356, 95% confidence interval (CI): 1.168-9.643, p= 0.025] and a history of coronary artery disease (OR: 4.657, 95% CI: 1.703-12.737, p= 0.003). Conclusion : The risk factors for predicting new-onset AF in persons who (Korean Circ J 2007 ;37:609-615)

"Orange Juice통조림 중의 Sn의 溶出量"

金學辰 漢陽大學校文理科大學 化學科 1970 化脈 Vol.- No.1

市販 Orange Juice통조림 80個의 Sn溶出量의 측정을 Polarograph法으로 行하였다. 그 結果 150ppm을 超過한 통조림도 있었다. 다른 조건하에서 준비된 見本을 주의깊게 使用함으로서 Sn의 溶出量을 測定을 하였다. Sn의 溶解中에 중요한 變化는 아래와 같은 變化物에 依해서만 惹起되는것은 아니다. (1)Vitamin C의 添加의 量 (2)통조림 充電時의 溫度條作 (3)製造後의 저장중의 變化 Sn의 농도가 150ppm 以下라면 Sn의 溶解되어 있는 量과 우리가 먹어서 배설하는 정도로서 人體에 害가 되는 뚜렷한 상호 關係는 아니다.

山地를 利用한 山野菜 및 生藥栽培 에 관한 硏究 : 1. 栽培地帶의 差異가 沙蔘의 生理生態에 미치는 影響 1. Effect of Different Planting Site on the Physiology and Ecology of Codonopsis Lanceolate Benth et Hooker.

李相來,金鶴鎭 順天大學校 1984 論文集 Vol.3 No.1

沙蔘의 山地를 利用한 栽培 可能性을 檢討코자 旣存 熟田圃場과 山의 200m 標高의 南向地 및 北向地에 直接 栽培한 1年生 沙蔘의 生育, 收量 및 品質에 關한 調査 結果를 要約하면 다음과 같다. 1. 氣象環境 調査에서 平均氣溫, 最高氣溫 및 最低氣溫은 平地인 熟田圃場에서 제일 높았고 다음으로山의 南向圃場이 높았으나 北向圃場은 가장 낮았다. 降水量은 3試驗紙가 別差가 없었으나 日射量과 地中溫度에서는 氣溫에서와 같은 傾向이었다. 2. 土壤成分 調査에서 旣存 熟田圃場에 比해서 山에 位置한 圃場들은 酸性이 높은 便이었으며 有機物, 燐酸, 加里, 칼슘, 마그네슘이 부족하였고 석회 요구량도 높았다. 3. 出芽期, 開花期 및 種子의 成熟期는 試驗地別로 큰 差異가 없었으나 만장, 절수, 葉數, 根長, 根徑에서는 山의 南向地圃場에서 좋은 便이었고, 4. 葉, 넝굴, 種子, 根等 收量性에서도 赤是山의 南向地圃場에서 增收되었다. 5. 土壤成分과 沙蔘根의 收量間의 相關에서는 負의 相關으로 有意性이 높았다 6. 量的形質들과 沙蔘根의 收量間의 相關에서는 넝굴의 길이, 節數 및 葉數와는 正의 相關으로 有意性이 높았다. 7. Ginsenoside別 含量은 PD系 Saponin에서는 -Rd가 가장 많았고 PT系 Saponin에서는 -Re, -Rg₁, -Rg²의 順으로 많았으며 이들 Saponin의 含量은 山의 南向地圃場에서 가장 높았던 反面에 北向地圃場에서는 南向地나 熟田圃場 生産根에 比하여 그 含量이 낮은 便이었다. 8. 200m 標高의 山에서도 南向地에서는 熟田栽培에 比하여 沙蔘의 生育이 良好하고 收量도 높으며 品質도 優秀하여 山地利用의 沙蔘栽培可能性이 充分히 있는 것으로 생각되었다. This experiment was conducted to investigate the growing habits, yielding and quality affected by different planting sites cultivation of Codonopsis Lanceolate Benth et Hooker. The results obtained were summarized as follows: 1. The mean temperature, maximum temperature and minimum temperature were higher at the field of the southern part of mountain than the other field, but the precipitation was similar in all field. Also the sun-shine and above-ground temperature were similar tendency temperature. 2. The fields of the southern part and northern part of mountain were acid soil these fields have a little OM, ??, K, Ca and Mg, these fields demanded the lime requirement than the ordinary field. 3. The emergence, flowering and maturing were similar all the fields but the lenght of vine, number of node, number of leaves, length of root and diameter of root were high production at the field of southern part of mountain. 4. Even the yielding of leaves, vine, seed and root were high production at the field of southern part of mountain. 5. The simple correlation among the soil components and the root yielding were negative and significant. 6. The length of vine, number of node, number of leaves and the yielding were positive and significant. 7. The content of saponin was high production at the field of southern part of mountain the other experiment fields. 8. The field of southern part of mountain takes a high yielding production and better quality then we recommend this field for the Codonopsis Lanceolate Benth et Hooker cultivation. ※Sun-Cheon national college.

Simulations of Two-Dimensional Electronic Correlation Spectra

김학진,전성준,Kim, Hak Jin,Jeon, Seong Jun Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.8

Two-dimensional (2D) correlation method, which generates the synchronous and the asynchronous 2D spectrum by complex cross correlation of the Fourier transformed spectra, is an analysis method for the changes of the sample spectrum induced by vari ous perturbations. In the present work, the 2D electronic correlation spectra have been simulated for the cases where the sample spectrum composed of two gaussian bands changes linearly. When only the band amplitudes of the sample spectrum change, the synchronous spectrum shows strong peaks at the band centers of the sample spectrum, but the asynchronous spectrum does not make peaks. When the sample spectrum shifts without changing intensity and width, the synchronous spectrum shows peaks around the initial and final positions of the band maximum and the asynchronous spectrum shows long peaks spanning the shifting range. The band width change produces the complex 2D correlation spectra. When the sample spectrum shifts with band broadening, the width change by 50% of full width at half maximum (FWHM) does not give so large an effect on the correlation spectrum as the spectral shift by one half of FWHM of the sample spectrum.

청음 음성학적 지식에 기반한 음가분류에 의한 핵심어 검출 시스템 구현

김학진,김순협 한국정보처리학회 2003 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.10 No.2

비핵심어 모델의 가중치 기반 핵심어 검출 성능 향상에 관한 연구

김학진,김순협,Kim, Hack-Jin,Kim, Soon-Hyub 한국정보처리학회 2003 정보처리학회논문지B Vol.10 No.4

본 논문에서는 핵심어 검출기의 성능 향상을 위해 가베지 클라스 클러스터링과 함께 필러 모델에 가중치론 부여하는 방안 및 태스크 도메인 이용자들의 발화 음성의 성향 분석을 통해 핵심어 천이 확률을 계산하여 핵심어 검출기반 대화 음성처리 시스템의 처리 시간 단축 방안을 제안한다. 제안한 방법은 음성학적으로 유사한 음소끼리 묶어서 사용함으로써 하나의 음소는 잘 표현하지 못하지만 비슷한 음소 그룹의 표현에는 유용한 방법으로 본 논문에서는 한국어 형태론과 태스크 도메인으로 선정한 증권거래 대화음성처리 시스템에서 활용되는 발화 문장을 분석하여 5 음소군을 제시한다. 또한 이들 음소군에 태스크 종속적인 필러 모델 가중치를 부여하며, 두 번째로는 시스템의 처리시간 단축을 위해 연속 발화 문장 속에 포함되어 있는 핵심어 천이 확률을 계산하여 시스템에 적용 실험한다. 제안한 시스템의 성능 평가를 위해 태스크 도메인에 활용되는 4,970 문장의 코퍼스를 구축하고, 이용자 중 20대∼30대 5명이 발성하게 하여 실험한 결과, 제안한 5 음소군에 가중치를 부여한 방법의 FOM은 87.5%로 Yapanel[1]의 7음소군 85.5%보다 우수한 성능을 보였으나, LVCSR의 89.8%보다는 약간 뒤지는 성능을 확인하였다. 계산시간에 있어서도 0.70초로 7음소군의 0.72초보다 우수한 성능을 보였다. 핵심어 천이 확률 분석을 통한 인식 시간 단축 실험에서는 천이 확률을 적용했을 때 약 0.04초∼0.07초의 처리 시간을 단축하는 것을 확인하였다. This paper presents a method of giving weights to garbage class clustering and Filler model to improve performance of keyword spotting system and a time-saving method of dialogue speech processing system for keyword spotting by calculating keyword transition probability through speech analysis of task domain users. The point of the method is grouping phonemes with phonetic similarities, which is effective in sensing similar phoneme groups rather than individual phonemes, and the paper aims to suggest five groups of phonemes obtained from the analysis of speech sentences in use in Korean morphology and in stock-trading speech processing system. Besides, task-subject Filler model weights are added to the phoneme groups, and keyword transition probability included in consecutive speech sentences is calculated and applied to the system in order to save time for system processing. To evaluate performance of the suggested system, corpus of 4,970 sentences was built to be used in task domains and a test was conducted with subjects of five people in their twenties and thirties. As a result, FOM with the weights on proposed five phoneme groups accounts for 85%, which has better performance than seven phoneme groups of Yapanel [1] with 88.5% and a little bit poorer performance than LVCSR with 89.8%. Even in calculation time, FOM reaches 0.70 seconds than 0.72 of seven phoneme groups. Lastly, it is also confirmed in a time-saving test that time is saved by 0.04 to 0.07 seconds when keyword transition probability is applied.

청음 음성학적 지식에 기반한 음가분류에 의한 핵심어 검출 시스템 구현

김학진,김순협,Kim, Hack-Jin,Kim, Soon-Hyub 한국정보처리학회 2003 정보처리학회논문지B Vol.10 No.2

This study outlines two viewpoints the classification of phone likely unit (PLU) which is the foundation of korean large vocabulary speech recognition, and the effectiveness of Chiljongseong (7 Final Consonants) and Paljogseong (8 Final Consonants) of the korean language. The phone likely classifies the phoneme phonetically according to the location of and method of articulation, and about 50 phone-likely units are utilized in korean speech recognition. In this study auditory phonetical knowledge was applied to the classification of phone likely unit to present 45 phone likely unit. The vowels 'ㅔ, ㅐ'were classified as phone-likely of (ee) ; 'ㅒ, ㅖ' as [ye] ; and 'ㅚ, ㅙ, ㅞ' as [we]. Secondly, the Chiljongseong System of the draft for unified spelling system which is currently in use and the Paljongseonggajokyong of Korean script haerye were illustrated. The question on whether the phonetic value on 'ㄷ' and 'ㅅ' among the phonemes used in the final consonant of the korean fan guage is the same has been argued in the academic world for a long time. In this study, the transition stages of Korean consonants were investigated, and Ciljonseeng and Paljongseonggajokyong were utilized in speech recognition, and its effectiveness was verified. The experiment was divided into isolated word recognition and speech recognition, and in order to conduct the experiment PBW452 was used to test the isolated word recognition. The experiment was conducted on about 50 men and women - divided into 5 groups - and they vocalized 50 words each. As for the continuous speech recognition experiment to be utilized in the materialized stock exchange system, the sentence corpus of 71 stock exchange sentences and speech corpus vocalizing the sentences were collected and used 5 men and women each vocalized a sentence twice. As the result of the experiment, when the Paljongseonggajokyong was used as the consonant, the recognition performance elevated by an average of about 1.45% : and when phone likely unit with Paljongseonggajokyong and auditory phonetic applied simultaneously, was applied, the rate of recognition increased by an average of 1.5% to 2.02%. In the continuous speech recognition experiment, the recognition performance elevated by an average of about 1% to 2% than when the existing 49 or 56 phone likely units were utilized.

特異한 下腿骨 發育不全症의 1例

金學辰,朴己出 대한의학협회 1968 대한의학협회지 Vol.11 No.3

가토에서 99.9% 에탄올을 이용한 화학적 담낭 경화법에 관한 연구

김학진,이광만,채권묵 圓光大學校 醫科學硏究所 1992 圓光醫科學 Vol.8 No.1-2

Chemical sclerosis of the gallbladder was attempted using 99.9% ethanol in 13 rabbits at laparotomy. This study was performed to observe the obliteration and fibrosis of the gallbladder after exposure to chemical sclerosant without operative cholecystectomy. The proximal cystic duct was occluded by vascular clamps, and then 99.9% ethanol was injected to the gallbladder, followed by aspiration of ethanol after 10min (4 rabbits), 20min (5 rabbits). Biopsies of the gallbladder were performed after 1 week and 2 weeks in 9 rabbits (twice for each rabbits), and after 3 weeks in remaining 4 rabbits. The gallbladder specimens were examined grossly and microscopically to observe the degree and extent of necrosis and fibrosis related to the ethanol-exposure time and the interval between the time of the ethanol-exposure and biopsy. The results were as follows. 1. Cystic duct occlusions were observed at 1 week after ethanol-exposure in all rabbits, and there were no gross changes of the liver and the common bile duct. 2. The specimen of the liver showed no remarkable microscopic change, and the titers of liver function test (AST, ALT and r-GTP) were in normal limit in all rabbits after ethanol-exposure. 3. Microscopic examination of the wall of the gallbladder after 1 week showed ischemic necrosis of entire layer in all rabbits, but inflammation or fibrosis was not observed. 4. After 2 weeks, the serosal layer of the gallbladder showed fibrosis with infiltration of fibroblasts in all rabbits, and the fibrosis was more progressed after 3 weeks with proliferating fibroblasts.

急性穿孔性廻腸末端炎의 六例

金學辰,金益山 醫藥係社 1959 綜合 醫學 Vol.4 No.1