두 가족의 가족성 모야모야병 환자 4례

구자성,노재규,박성호,이한보,이용석,윤창호,송치성,송재우 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

주물사업장에서 발생하는 호흡성분진의 농도 및 석영함유량에 관한 연구

박용선,노영만,김현욱,한진구,안연순,강성규,김정만 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1

This study was performed to measure and evaluate the concentration of respirable dust and quartz content at molding and shakeout process in the foundry. The 129 samples in 30 foundries were collected using 10mm Dorr-Oliver nylon cyclone and analysed for quartz concent by Fourier Transform Infrared Spectroscopy. The average quartz concentrations in the respirable dust was 0.0273mg/㎡ and ranged from 0.0007 to 0.3757mg/㎥. The average quartz concentrations of shakeout process wsa significantly higher than that of molding in the foundry. The average of respirable dust in foundry 102129mg/㎡ and ranged from 0.1524 to 7.0428mg/㎥. But there is no significant difference between molding and shakeout processes. The average contents of quartz for OEL-MOL was 2025% and ranged from 0.05 to 32.79% The non-compliance rates for quartz were 22.96% in Korea-OEL and 34.01% in ACGIH-TLV and NIOSH-REL, and 35.03% in OSHA-PEL. The airbome dust in the foundry was effectively controlled when local exhaust ventilation and/or wetting system were operated. The result of this study therefore showed that the engineering controls and periodic environmental suveillance in foundry will be very important for preventing the health effects of workers exposed to quartz.

외국어 학습에서 일반 언어불안과 독해불안과의 관계

신동로,권영선,노상근 全北大學校 敎育大學院 2001 敎育論叢 Vol.21 No.-

This study is to investigate the relationship between generally recognized language anxiety and reading anxiety in foreign language learning. The subjects of this article consisted of 77 lst grade middle school students and 82 2nd grade high school students. The total of 159 participants took part in this study. Two inventories assessed two different anxiety levels: the Foreign Language Classroom Anxiety Scale and Reading Anxiety Scale. For statistical analysis, the analysis of variable and correlation analysis were applied by using the SPSS computer program. The results of from the statistical analysis are as follows. · The relationship between generally recognized language anxiety and reading anxiety scale were highly related to each other(r=736). · A statistical correlation was not found between boys and girls, and between middle school and high school students in language and reading anxiety. · The reading comprehension assessment measures consisted of the translation of sentences and a multiple-choice test. The results indicated that more highly anxious students(those with high scores on reading anxiety inventory) tended to take less academic achievements than did those participants who claimed to experience minimal anxiety. · The listening assessment measures were multiple-choice tests. The results indicated that more highly anxious students(those with high scores on language anxiety inventory) tended to get less grades than did those participants who claimed to experience minimal anxiety. · This paper advocates that language anxiety and reading anxiety can play a significant causal role in creating individual differences in both language reading and listening.

잎담배의 葉質에 關한 硏究 : 培養液의 pH變化가 담배의 生長 및 Nicotine 生成에 미치는 影響 Effect of pH on the Growth and Nicotine Formation of Tobacco Plant

卞珠燮,趙成鎭,盧載榮,裵吉寬 충북대학교 엽연초연구소 1982 煙草硏究 Vol.9 No.-

This experiment was conducted to investigate the influence of pH, concentration of iron and phosphate and their interaction on the formation of nicotine in tobacco plants. For different levels of pH and phosphate respectively and two levels of iron were treated in thin experiment. The experimented tobacco plants were cultured by water culture in the greenhouse. The results are summarized as follows. 1.Stem height, stem diameter, length and with of the largest levels and number of total leaves increased at the plot of pH 5.5 and pH 7.0. 2.In the plot of treated 0.5 ppm of iron and 30 ppm of phosphate, weight of total leaves and weight of unit leaf area were large. It is considered that the yield increase was due to the increase of the weight of unit leaf area. 3.The root weight increased by treatment of 0.5 ppm of iron. And the root weight of the plot treated 0.5 ppm of iron increased by the treatment of 30 ppm of phosphate. 4.The difference nicotine content in the loaves among the treatments showed the same tendency as the root But there were no differences between the nicotine content at different concentation of phosphate in the case of 1.0 ppm of iron, and there were no differences between the nicotine content at different concentration of iron in the case of 60 ppm of phosphate.

施肥量 및 施肥方法이 黃色種 담배 初期生育 및 收量에 미치는 影響

卞珠燮,趙成鎭,盧載榮,申周植 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was carried out to study the effects of different amount of nitrogen and potassium applied and dressing methods on the growth and yield components of flue-cured tobacco The results are summarized as follows. 1.Growth was promoted by increased nitrogen level in the plot of high potassium application. 2.In the low level of nitrogen applications early growth was good in the plot of planting hole application, but there were little differences of growth among the treatments after middle part of maximum growth stage. 3.Weight per leaf area decreased by the increasing level of nitrogen with high potassium application. 4.Except the highest level of nitrogen (15㎏/10a), the weight per cured leaf was larder in the plot applied basal application 33 : first top dressing 33 : second top dressing 33 than in the plot applied 50 : 25 : 25. 5.Increased amount of potassium application made the leaf area contract ion ratio low and specific leaf weight high.

한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

A Two-Phase Interleaved Power Factor Correction Boost Converter With a Variation-Tolerant Phase Shifting Technique

Yong-Seong Roh,Young-Jin Moon,Jeongpyo Park,Changsik Yoo Institute of Electrical and Electronics Engineers 2014 IEEE transactions on power electronics Vol. No.

<P>This paper presents a two-phase interleaved critical conduction mode (CRM) power factor correction boost converter with a variation-tolerant phase shifter (VTPS), which ensures accurate 180° phase shift between the two interleaved converters. A feedback loop similar to a phase-locked loop controls the amount of the phase shifting of the VTPS. The proposed VTPS has better immunity of process, supply, and temperature variations than the conventional phase shifter. A 320-W two-phase interleaved CRM boost converter prototype has been implemented, while the proposed VTPS and conventional interleaving phase shifter can be selectively applied to compare the performance of the proposed technique with the conventional one. Experimental results show that the two-phase interleaved CRM boost converter has better performance with the proposed VTPS. The proposed VTPS circuit can be applied to any type of interleaved switching power converter.</P>

A Multiphase Synchronous Buck Converter With a Fully Integrated Current Balancing Scheme

Yong-Seong Roh,Young-Jin Moon,Jeongpyo Park,Min-Gyu Jeong,Changsik Yoo IEEE 2015 IEEE transactions on power electronics Vol.30 No.9

<P>A multiphase synchronous buck converter has been developed, in which the number of switching phases is determined by the sensed average load current. The maximum number of switching phases is four. The dc resistance (DCR) of switching inductor is used to detect the average current, which is also utilized to balance the load current among the multiple switching phases. The instantaneous inductor current is sensed as well to generate the pulsewidth modulation (PWM) signal to switch the inductors. The multiphase synchronous buck converter implemented in a 0.13-μm BCDMOS process shows 91.1% maximum power efficiency when the input voltage is 2.8 V, output voltage is 1.0 V, and output current is 2.0 A.</P>

동적 신경망에 의한 비선형 시스템 제어

노용기(Yong Gi Roh),유인호(In Ho Ryu),조현섭(Hyeon Seob Cho),오성곤(Seong Kwon Oh),장성환(Seong Whan Jang) 대한전기학회 1999 대한전기학회 학술대회 논문집 Vol.1999 No.7