중부지역 옥수수 파종기에 따른 생육단계 및 수량성 변화

서종호, 문중경, 정건호, 서민정, 구자환, 박장환, 배환희, 신성휴, 권영업 忠北大學校 農業科學硏究所 2014 農業科學硏究 Vol.30 No.2

Maize hybrids were planted on April 1, April 25, May 20 and June 15 in 2012, 2013 at the experimental paddy and upland fields in Suwon city , respectively to know changes of growth stage and yield according to different planting time. Maize planting on April 1 was not recommended because total growing days at planting on April 1 was not different with that at planting on April 25 due to many days from planting to emergence over 20 days at planting on April 1. Total growing days were not much different among three planting time after April 25 because days from silking to maturity was lengthened though days from planting to silking was shortened at later planting time. Stalk weight was decreased as planting time was delayed, particularly at planting times after May 20 at paddy field by excess water injury during early growth stage. But, grain yield was not low as in May and June. It is needed to introduce early maturity maize variety as Yanganok at late planting for higher grain yield and enough time for soil preparation for next winter crops

비만증 환자에서 한약제에 의한 체중 감소효과

Oh, Seung-Joon,Jeong, In-Kyung,Kim, Young-Seol,Choi, Young-Kil,Paeng, Jeong-Ryung,Bae, Jung-Hwan,Shin, Hyun-Dae 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Seung-Joon Oh, In-Kyung Jeong, Young-Seol Kim, Young-Kil Choi, Jeong-Ryung Paeng¹, Jung-Hwan Bae and Hyun-Dae Shin²Department of internal Medicine, College Medicine, Endocrine Research Institute¹. Department of Rehabilitation, College of Oriental Medicine², Seoul, korea. Bady Fat Reduction Effects of Red Ginseng Compound Preparation on the Patients with Obesity. Proceedings of International Symposium on East-West Medicine, Seoul. 244-254, 1999.-Obesity can be defined as a metabolic disease due to an increased state of fat tissues caused by an imbalance of calorie intake and use. Recently, in Korea by improvement and westernization of food intake, along with decrease in exercise activities, the prevalence of obesity has increased greatly. Our objectives were to study stability and effects of decrease in body fat by administering red ginseng compound preparation (known to have body fat decreasing effects in laboratory animals) to obesity patients on low calorie diets. Changes in weight and body fat were measured while carrying out calorie-restricted diets on patients for 4 weeks, then administering red ginseng compound preparation for another 4 weeks. The patients were 20 people whose BMI were 25kg/㎡ or over and whose percent body fat was also 30% or over when tested by bioelectrical conductivity. 1. Changes in weight were from 70.04kg(base line) to 67.43kg(after taking red ginseng compound preparation). 2. In similar sense, BMI decreased from 27.12kg/㎡(base line) to 26.56kg/㎡(after dieting), and further to 26.01kg/㎡ (after taking red ginseng compound preparation). The BMI seemed to decrease significantly compared to the baseline after the use of red ginseng compound. 3. Waist hip ratio was changed from 0.8858(base line) to 0.8728, but it was statistically insignificant. 4. The percent body fat was 35,16%(base line), 33.87%(after dieting), and 31.68%(after taking red ginseng compound preparation). 5. Complete blood cell count and blood chemisrty remained unaffected by the administration. 6. In concern to endocrinologic studies, T3 decreased from 118.7 to 98.2ng/dL, and T4 increased from 8.8 to 9.2㎕/ dL. Epinephrine showed a tendency to decreased from 0.27 to 0.25 ng/mL, and norepinephrine increased from 0.39 to 0.44ng/mL. 7. Leptin was not changed. 8. Some patients complained adverse effects; constipation(5 patients, may be due to diet therapy), fatigue (2 patients), pruritus(2 patients), flushing(s patients), dizziness(3 patients) and epigastric discomfort(2 patients). However their symptoms were mild, so medication did not stopped. In conclusion, loss of weight without significant side effects was observed during low calorie diet and red ginseng compound preparation administration. This is thought to be in relation to sympathetic nerve system rather than adrenal gland. Also, further long0term studies should be required, since the observed results were based on short-term changes in weight.

유전자 알고리즘을 이용한 비선형 시스템 동정

정경권,정성부,엄기환 동국대학교 산업기술환경대학원 1998 산업기술논총 Vol.4 No.-

In this paper, we propose a nonlinear system identification method using genetic algorithm. We represent the nonlinear system as a parameter vector and a measurement vector. In order to identify the nonlinear system, we find the parameter vector using genetic algorithm. The parameter vector is regarded as a chromosome of gene. The error between the desired output and estimated output every sampling period is used to calculate the fitness of one gene. The simulation results showed the effectiveness of using the genetic algorithm in the nonlinear system identification.

호흡 부전을 동반한 급성 자율-감각신경병증 1예

박경필,안규환,김은주,김대성,정대수,박규현,김매자 대한신경과학회 1999 대한신경과학회지 Vol.17 No.5

지방산 유지 원료에 따른 고형비누의 특성에 관한 연구

정명선,배한수,이봉연,민경혜,류덕환 계명대학교 생활과학연구소 2001 科學論集 Vol.27 No.-

The experimental results on the washing efficiency of detergent made from corn oil, wasted cooking oil and pig fat oil are as follows ; Laundry factors in this experiment are detergent concentration, laundry temperature and laundry time. 1.The surface tension of each detergent showed the lowest in 0.2% concentration corn oil 60.84, wasted cooking oil 61.11, pig fat oil 60.73dyne/cm. 2.The wasthing efficiency based on different concentration of detergents showed the highest in 0.2% concentration. 3.The highest washing efficiency appeared in 0.2% concentration 40℃ temperature and 40~50 min. time. There showed no difference in the washing efficiency according to the volume of water. It can be said that the frictional force of bearing rather than the volume of water worked on the efficiency.

신장기증자들의 심리적 특성

정승아,김재환,강종명,이장한,김경욱 漢陽大學校 精神健康硏究 1998 精神健康硏究 Vol.17 No.-

사전 캐쉬 기능을 갖는 웹 브라우저의 설계 및 구현

정재선,박경환 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1

This paper describes the development of a web browser that supports an extended function of cache to reduce the overall response time during information search and retrieval. Conventional web browser depends on a typical function of cache that follows the principle, reference localization. The strategy of a traditional cache is cache after reference, say post-reference cache. This paper suggests a new strategy of cache that data, which is likely to be referenced the next phase, is cached before actual reference via a set of hyper links presented on the current web page. Consequently, both unreferenced and referenced data could take advantage of cache during actual search and retrieval. This paper also proposes a possible optimization technique for pre-reference cache. The proposed technique use the evaluation function that evaluates the possibility of reference based on the presentation pattern of a web page and the size and type of data, etc to sort accessible hyper links. A own preference or site management strategy.

Helicobacter pyloir 양성 소화성 궤양에서 lansoprazole 포함 삼제요법의 제균율 및 제균판정에 있어서 요소호기검사의 유용성

정혜경,곽재진,유민아,배기선,권정미,이종수,김도영,문일환 대한감염학회 2003 감염과 화학요법 Vol.35 No.3

목적 : 본 연구는 Helicobacter pylori (이하 H. polyri) 양성인 소화성 궤양 환자에서 lansoprazole 포함 삼제요법의 제균율을 알아보고, 제균 치료 후 제균 판정에 있어서 요소 호기 검사(Urea breath test, 이하 UBT) 및 신속요소분해(rapid urease test, 이하 RUT test)와의 일치율에 대하여 알아보고자 하였다. 방법 : 상부위장관내시경 검사에서 H. polyri 양성인 소화성 궤양환자에서 lansoprazole 60㎎+amoxicillin 2g+clarithromycin 1g의 약제를 2회 분복하여 1주간 복용하는 삼제요법을 실시하였다. 최소 4주후 추적 상부위장관내시경을 실시하였고, 전정부와 체부에서 각각 RUT를 실시하였으며 UBT(5분, 20분)를 시행하였다. 결과 : 대상환자는 총 46명으로 남자 34명(48±13세), 여자 12명(53±14세)이었다. LAC 삼제요법의 제균율은 40/46명(87.0%)이었고, 궤양의 치유율도 42/46명(91.3%)이었다. RUT와 20분 UBT 결과가 모두 음성이었던 경우는 41예, 모두 양성이었던 경우는 4예로 RUT와 UBT는 97.8% (45/46)의 일치율을 보였고, 1예는 UBT는 음성이었으나 체부에서 시행한 RUT가 양성이었다. 5분 UBT 검사가 양성이었던 예는 14/34 (41.2%) 이었고, 이 14예 중 12예(85.7%)는 20분 UBT 검사 음성, RUT 음성이었다. 결론 : Lansoprazole과 amoxicillin, clarithromycin 1주일 병합요법은 H. polyri 양성인 소화성 궤양 환자에서 87.0%의 제균율을 나타내어 우수한 효과를 보였고, 요소호기검사는 제균 치료 후 제균 판정에 유용한 비침습적인 방법임을 확인할 수 있었다. Background : There are only a few studies on Helicobacter pylori (H. pylori) for its eradication rates of lansoprazole-based triple therapy in Korea, and the results are controversial. Therefore, we undertook to investigate the eradication rate of lansoprazole-based triple therapy, and compare the concordance rate of urea breath test (UBT) and rapid urease test (RUT) in evaluating H. pylori eradication. Methods : Patients with acute peptic ulcer who were H. pylori-positive were recruited by prospective, consecutive manner. They received lansoprazole 30 ㎎ b.d., amoxicillin 1 g b.d. and clarithromycin 500 ㎎ b.d. for 1 week. Upper endoscopy was performed after 4 weeks to check for ulcer healing, and UBT and RUT were performed to evaluate H. pylori eradication status. Results : A total of 46 patients were recruited, and they were all compliant. H. pylori eradication rate was 87.0% (40/46) and ulcer healing rate was 91.3% (42/46). Forty one patients showed negative in both UBT and RUT, and 4 patients revealed positive in both tests, therefore, the concordance rate of UBT and RUT was 97.8% (45/46). Conclusion : Our study showed that 1-week lansoprazole-based triple therapy was effective in H. pylori eradication and ulcer healing. UBT can be an effective, noninvasive method for evaluating H. pylori status after H. pylori eradication.

SrTiO₃첨가에 따른 (x)BaTiO₃-(1-x)SrTiO₃의 유전적, 전기적 특성

정해덕,장동환,김덕근,홍경진,최창주 木浦大學校 工業技術硏究所 1998 工業技術硏究誌 Vol.8 No.-

In this paper, a ferroelectric material BaTiO3 was added to SrTiO3, then (x)BaTiO3-(1-x)SrTiO3(0.7≤x≤1) ceramics were fabricated with stable electrical properties in high voltage. Microstructures and electrical properties were investigated according to mixing conditions of addition material SrTiO3. As a result of the investigation of all experiments, the shrinkage was excellent in 0.9BaTioO3-0.1SrTiO3. The grain size was increased, the curie temperature was shifted low temperature. The 0.9BaTiO3-0.1SrTiO3 was appeared stable property in temperature vs. permittivity. Also, 0.9BaTiO3-0.1SrTiO3 was showed stable dielectric properties at 25~85[C]. V-I properties of specimen were observed in the temperature range of 21~143[C], were divided into three regions. the region I below 10[kV/cm] was shown Ohmic conduction, the region II from 10 to 30[kV/cm] was explained by the poole-Frenkel emission theory and the region III above 30[kV/cm] was analysed by the tunneling effect.

전방향 신경회로망을 이용한 블록암호화 기법

정경권,엄기환 동국대학교 산업기술연구원 1998 산업기술논문집 Vol.11 No.-

본 논문에서는 전방향 신경회로망으로 암호 함수를 구성하는 블록 암호 알고리즘 방법을 제안한다. 제안한 방법은 블록 암호 알고리즘에서 사용되는 암호화 함수 전체를 전방향 신경회로망으로 대치하는 방법과, DES 암호 알고리즘에서 S-box를 전방향 신경회로망으로 대치하는 방법이다. 신경회로망의 가중치를 키로 사용하여 암호화 및 복호화를 수행한다. 신경회로망의 비선형적인 특성과 각각의 층을 구성하고 있는 뉴런간의 방대한 연결로 복잡한 구조를 가지고 있다. 또한 은닉층의 구성에 따라 여러 형태의 설계가 가능하다. In this paper, we propose a block cipher algorithms composing cipher function using feedforward neural network. The proposed methods are that cipher function used in the block cipher algorithm is totally replaced with feedforward neural network, and also, S-box is replaced with feedforward neural network in DES algorithm. The weight of neural network is used as a key to perform an encryption and decryption. It has complex structure due to its nonlinear characteristic and the enormous connections among neurons which organize layers respectively. Also, various design shapes are applicable by different structures of hidden layers.