파라핀에 포매한 형질세포종양 조직에서의 CD56의 발현 증가와 진단적 유용성

김석형,박찬식,최은영,강현욱,박성희,정두현 대한병리학회 2001 Journal of Pathology and Translational Medicine Vol.35 No.3

鼻毛의 白毛發生에 의한 年齡推定

김진국,홍석찬,진정언,박의우,김동욱 大韓法醫學會 1999 대한법의학회지 Vol.23 No.1

The gray vibrissae of Korean males(n= 189) between 15 and 75 years old and females(n=111) between 15 and 74 years old whop visited the department of otorhinolaryngology, Konkuk university Chungju hospital during 1996 to 1998, were counted for the purpose of estimating approximate age range in individuals of unknown age. The lowest age appearing gray hairs in both sexes was 15-year-old. The Pearson's correlation coefficient in both sexes was 0.490 (p<0.01). The age appearing gray vibrissae in females was slightly earlier than that of males, however, the differences between right and left sides of nasal cavity were insignificant. This method of counting gray vibrissae would be useful to estimate age range in personal identification together with other methods available until now.

고주파용 칩인덕터 유리소재 개발

김영호,송민석,윤영진,박찬욱,이재열 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.1

The glass systems of SiO_2-Al_2O_3-B_2O_3-K_2O were fabricated with the composition of SiO_2 65∼76wt%, B_2O_3 20∼30wt%, Al_2O_3 0.3∼4.5wt%, and K_2O 0.5∼2.5wt% for mother glass of high frequency chip inductor. The glasses were prepared by quenching the melt from 1500℃ and analyzed by X-ray diffraction. The specimens were prepared with composites of ball milled glasses powder mixed with 0∼50wt% of alumina powder. After heat treating at 850℃∼950℃, sintering behaviors were observed by measuring the density of specimens as a function of temperature and the amount of alumina. Dielectric constants and dissipation factors were evaluated with HP-4192A as well as other crucial properties such as strength, softening point and thermal expansion. The density, dielectric constant and dissipation factor of specimen were 2.61g/㎟, 5.9∼6.2 and 0.0013∼0.0016 at 1㎒, respectively.

보조 스위치의 손실 절감을 위한 ZC-ZVS PWM 컨버터

김학성,안희욱,조찬섭 금오공과대학교 2006 論文集 Vol.27 No.-

A ZC-ZVS PWM converter with reducing losses of auxiliary switch is presented. The function of the main switch and auxiliary switch is exchanged, and so doesn't require the saturable inductor or RC snubbers to damp the oscillations. Therefore, additional losses and limitation of the switching frequency can be eliminated. It provides fully soft switching for all the switching devices in the converter over whole load range. Also, this technique can be extended to other conventional converters. Experimental measurements verifying the theoretical prediction will be reported.

CEO 이미지, 위기 책임성, 그리고 공중의 이미지 회복전략 수용 간 관련성

김영욱,김찬아 한국방송광고공사 2007 광고연구 Vol.0 No.77

이 연구는 CEO가 관련된 기업 위기상황에서 기업이 어떤 이미지 회복전략을 주로 사용하는지 밝힌 다음, 공중이 가지고 있는 CEO에 대한 이미지와 위기 책임성, 이미지 회복전략의 수용 간의 관련성을 알아보고자 했다. 분석을 위해 신문 내용분석과 실험이 실시되었다. 분석 결과, 삼성과 현대자동차, SK 사례를 중심으로 신문기사에서 기업측은 이미지 회복전략으로서 수정행위를 가장 많이 사용하고 있었고, 정당화 전략인 입지강화와 단순부인 전략을 또한 비교적 많이 구사하고 있었다. 실험 연구 결과, CEO에 대한 이미지와 이미지 회복전략 수용 간의 유의미한 관련성은 밝혀지지 않았다. 하지만 위기 책임성과 이미지 회복전략은 상호작용하고 있었으며, 위기 책임성 인식에 따라 이미지 회복전략의 수용 양태가 달라진다는 것을 알 수 있었다. 즉, 책임성이 낮다고 인식하고 있는 공중 집단은 이미지 회복전략의 수용도가 더 높았다. 특히 입지강화의 경우 책임성이 높다고 인식하는 집단들의 이미지 회복전략의 수용도는 현저히 떨어졌다. 이는 입지강화 등 책임성을 인정하면서도 사건의 충격을 축소하려는 전략이 우리나라 공중들에게 부정적으로 받아 들여질 수 있음을 보여준다. The purpose of this study is to investigate image restoration strategies stated in a CEOinvolved crisis situation and to explore the relationships among CEO image, perceptions toward responsibility and the acceptance of image restoration strategies. Both the content analysis and an experiment were used to answer the research questions. The content analysis of image restoration strategies on 347 statements issued by three companies, Samsung, Hyundai and SK, whose CEOs were involved in major crises recently, showed that the most frequently used image restoration strategy was corrective action. Bolstering as a strategy to reduce the offensiveness of the crisis and the simple denial strategy followed the corrective action strategy. The results in the experiment indicated that the three-way effect of CEO image, the level of responsibility and image restoration strategies were not significant. The relationship between CEO image and the acceptance of image restoration strategies was also not found. However, the relationship between the level of responsibility and the acceptance of image restoration strategies was statistically significant. People with high internal attribution accept image restoration strategies less than people with low internal attribution. Bolstering intensified this phenomenon. Implications and suggestions for future study were discussed.

병렬 퍼지-뉴럴 방법에 의한 음성인식

허찬욱,유병욱,김창석 明知大學校 産業技術硏究所 1994 産業技術硏究所論文集 Vol.13 No.-

In this paper, a speech recognition method is proposed to resolve the time variation and the frequency variation that are major reasons of decreasing recognition rates of speech recognition. The time variation of speech and the frequency variation is known to differences of vocal cord and vocaltract among men. When LPCs of speech word is divided equally to cope with the problem of the time variation. The frequency variation of speech data can be absorbed by using the fuzzy inference and the artificial neural network. The parrel fuzzy neural network are proposed with combined both systems paralley to get higher recognition rate due to doing a compensation of each system errors. The result in our proposed system is that rates of the PFN 88.5[%].

골프스윙시 초보자와 숙련자의 근전도에 관한 비교연구

박찬희,백승국,오성기,김창욱 東亞大學校 附設 스포츠科學硏究所 1997 스포츠科學硏究論文集 Vol.15 No.-

Based on the analysis of the EMG(Electromyograpy) level of 3 lesson professional-golf players and 3 beginners under one year career performing drive and iron, pitching swing, this study in EMG analysis between lesson professional golf players and beginners, in club, and EMG contrast left to right muscle at the point of impact, using EMG machine has come to the following conclusion. 1. The active muscle involved at the point of impact turned out to reveal slight difference depending on clubs; yet the EMG of the upper body was noticeable in the left-right triceps brachii - the left biceps brachii - the left trapezius - the right petoralis muscle in sequence while that of the lower body was prominent in the left lectus femoris - the right gastrocnemius muscle. 2. When it comes to the EMG difference in clubs, drive, iron 7 and pitching, the experts' inbetween-club EMG of the left triceps brachii and the left biceps brachii muscle was marked by a statistic significance, novices showing a significance in the left biceps brachii muscle only. 3. To speak of experts only, the right-left EMG difference of the muscle involved in swinging was significant in terms of statistics ; while the involvement of left part was conspicuous in the trapezius muscle, the biceps brachii muscle and the rectus femoris muscle, the gastrocnemius's right part proved to be highly active. 4. Speaking of novices only, the statistical EMG difference of right-left muscle part involved in swinging was significant; the EMG of left part turned out highly significant in the trapezius and the rectus femoris muscle while the gastrocnemius' right part proved highly significant. 5. The EMG difference between experts and novices was remarkable in the triceps brachii and the pectoralis muscle ; the former came up with a high EMG in terms of right side muscle while the latter revealed rather a high EMG in terms of left side muscle.

韓國 氣象資料의 分析을 通한 運氣 氣候에 關한 硏究

朴燦永,金基郁,朴炫局 동국대학교 한의학연구소 2000 東國韓醫學硏究所論文集 Vol.8 No.2

명대 장경악은 기상 현상에 관하여 “오운육기를 토대로 기화를 추측하면 피차의 영허에 대해 십중칠팔은 들어맞는다”고 하였는데, 이를 착안하여 논자는 『황제내경』에 기재된 기상에 관하여 운기의 기후 특징을 한반도 서울을 중심으로 실제 기상관측 자료와 비교 분석하였다. 기상청 자료를 토대로 서울의 평균 풍속·평균 기온·강수량·평균 습도를 운기 이론 가운데 대운과 비교하였다. 또한 과거 1564년에서 1863년까지 한반도의 이상 기후 발생 빈도와 운기성쇠·운기동화·운기순역과 비교하였을 때, 운기동화의 경우와 이상 기후 발생 빈도와 일치하였다. 다만 본 논문의 실제관측 자료와 통계는 한국의 서울을 중심한 분석이기에, 중국과의 어느 정도 오차를 고려하여야 할 것이다. The comparison of climate s character of Yunqi(運氣) with the data of meterological observation were made in the research of climate. 1. The comparison of the average velocity of wind, temperature, rainfall, humidity of Seoul, by late 1954 to 1983, with Yunqi(運氣) was made. Fire-Chi(火氣) and moistme-qi(??氣) were matched with the attribute of Taiyun(大運). Cold-qi(寒氣) was had some relationshlp. Dry-qi(??氣) and Wind-qi(風氣) were not matched. About the relationship of Spirit-of-official-sky(可天之氣) with climate, when the Moisture-soil(??土) was added, they were matched and when the King-fire(君火) was added, they have some relationship. But Wind-tree(風木), Dry-metal(??金), Buble-fire(相火), Cold-water(寒水) was added they were not matched. 2. According to the observation data of rainfall by late 180 years of Seoul; about Taiyun(大運), when the Water-Yun(水運) was greatly exceeded and Fire-Yun(火運) was shorted, in the case of Official-sky(司天), when Wind-Tree(風木) was added, the frequency was highly. So when the Soil-Yun(土運) was greatly exceeded and when Official-sky(司天)was added to the Moisture-soil(??土), the rainfall was not matched. 3. The relationship of the frequency of the abnormal climate occurrences between Yunqi-promotion-weak(運氣盛??)and Yunqi-Hannony(運氣同化) and Yunqi-soft-attaclung(運氣順逆) in the weather of Korean Peninsula was compared by 1564 to 1863. They were not matched except the case of Yunqi-Harmony(運氣同化). 4. There were some cases which were not matched exactly between the climate predicted by the theory and real climate in 1984, the year of Kap-ga(甲子年). But many correspondence between the observation by the office of meteorology and the prediction by the analysis from Yun-qi-sang-hab(運氣相合) theory. 5. Because meterological phenomena of real world and analysis from the hypothesis of Yunqi(運氣) have no relationship with each other, some of Doctor denied Yunqi(運氣) in the way of matching mechanically. But the thought of Doctor who denied Fortune-spirit(運氣) made promotion for the theory of divination by bringing deeper insight. And it was not only the negative side. 6. In the point of geographical difference, the climate of China, the origination Yunqi theory, is different from the Korea's. Thus some observation errors should be considered. From the basis of this thesis, I hope that the deeper advance would be made into the Korean Yunqi theory.

만성 위염전 2 례

박찬규,이동욱,남성진,김추성,조성래,구본천,박영재,허규찬 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.3

위염전은 위의 비정상적인 회전으로 생기는데 급성증에서는 진단이 늦어질 경우 치명적일 수도 있으나, 만성증의 경우는 비특이적 위장관 중상을 나타내며, 치료되지 않을 경우 수년 동안 증상이 지속될 수도 있다. 최근 저자들은 소화불량, 식후 상복부 동통을 주소로 내원한 환자에서 만성위염전 2 례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Gastric volvulus is an abnormal rotation of the stomach. Gastric volvulus may present as an emergency or as a chronic condition. Acute volvulus si potentially lethal if unrecognized, while a chronic volvulus may cause symptoms for years if not treated. Gastric volvulus may be more common than previously estimated. Approximately 700 cases have thus far been documented. In patients with vague upper abdominal pain, bloating, vomiting, early satiety and weight loss, chronic gastric volvulus are reported and the related literature reviewed. The clinical presentation, diagnosis, and treatment are treatment are discussed. Features of acute and chronic volvulus are compared.

Transmission ability of Zika virus with artificially infected Aedes albopictus in Korea

Yang Sung‐Chan,Lee Hee-Il,Kim Hyunwoo,Lee Wook‐Gyo 한국곤충학회 2021 Entomological Research Vol.51 No.8

Zika virus (ZIKV), a virus mainly occurring in South America, is now globally distributed. Understanding the pathogen transmission cycle in a vector is exceptionally important in developing disease control strategies. In this study, we performed ZIKV microinjection in Aedes albopictus (Skuese), to estimate its vertical and horizontal transmission ability. The virus infection rate was confirmed by real-time qPCR in the F1 generation derived from the ZIKV-injected Ae. albopictus. The minimum infection rate (MIR) of the F1 generation was highest when they were injected with the virus at 6–12 h (MIR: 16.1) and lowest at 12–24 h (MIR: 4.7) after feeding. In the developmental stage of the F1 progeny, MIR values were 1.0, 1.3, and 6.7 in each egg, larval, and adult stage, respectively, but ZIKV was not detected in the pupa stage. Virus transmission ability was not significantly different between the collection areas (Tongyeong and Jeju). Ae. albopictus demonstrated a high venereal transmission rate of ZIKV and was detected in males (6 pool/7 pool) and females (6 pool/7 pool), confirming that ZIKV can be transmitted from infected mosquitoes to uninfected mosquitoes via mating. This is the first study of the administration of a ZIKV microinjection to Ae. albopictus in Korea and suggests a possibility of a potential mechanism for the virus to survive during adverse conditions via vertical transmission.