Arbitrage, Equilibrium and Smooth Trades

Won, Dong-Chun,Kim, Choong-Hwan 경제경영연구소 2004 經濟經營硏究 Vol.2 No.-

나리류 養液栽培時 培地種類 및 養掖濃度가 球根肥大와 切花品質에 미치는 影響

이춘용,이기환 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

By studing on selection of optimal media and nutrient concentration in selected media so that carried out the influnance of bulb enlargment and quality of cut flower of hydroponicsis of lily. The result is following. 1. The sprouting was relatively fast in husk+peatmoss, perlite+peatmoss and, according to cultivars its rank was cv.Cherry Blossom, cv. Nove Cento, cv. Snow queen. The peroid of growing was short appromaxitively forty day in cv. nove cento, twenty day in cv.Snow Queen than that of spring planting. The quality of cut flower, that is plant height and number of flowers was excellent in fermented husk+fermented saw dust(7:3). 2. In the case of growing late, not only fresh weight increased remarkable but also degree of bulb enlargement revelaed greatly, when growing point of new bulb was differentiation. 3. The rate of bulb enlargement was remarkable difference between treatment according to nutrient concentration ; bulb weight , bulb diameter, bulb height, bulb width, number of scale and scale weight were very excellent in twofold standard soultion of Horticultural Experiment (N,30-P,6-K,12-Ca,16-mG,8me/1). 4. The quality of cut flower according to nutrient concentration, that is cut flower weight, cut flower height and leaf area were good when cv. Casa blanca was treated by standard soultion of H.E (N,15-P,3-K,6-Ca8-Mg,4me/l),cv. Elite was 1/2standard soultion of H.E.(N,7.5 -P, 1.5-K,3-Ca,4-Mg, 2ME/L) Gelria treated with twofold standard soultion of Horticultural Experiment was excellent in all of them above, but revealed bad for hardness of stem in the cv. casa blanca cultivars. 5. As a result of leaf analysis, all of cultivars revealed highly in rate of absorbance of nitrogen and potassium, when nutrient of high-concentration was treated Amount of absorbance of them remarkable increased in caseof cv. Elite cultivar, especilly absorbance of calcium was higher than other component. Amount absorbance of nitrogen in cv.casa blanca, according to high-concentration nutrient was much better but rate of absorbance of potassium weakly increased. Conseqencelly we know that nitrogen and potassium play an imporitant role in bulb enlargement and quality of cut flower. 6. The quality of bulb like bulb weight, bulb diameter, bulb width, bulb height, number of scale, scale weight were execellent as it cut thestem at 10 cm above the ground to reuse a bulb after cut flower.

리더십이 직무태도에 미치는 영향에 관한 연구

양춘희,오창환 남서울대학교 2005 남서울대학교 논문집 Vol.11 No.1

The purpose of this study is to determine the relationship between leadership and work attitude through both the literature research and the empirical research using questionaries to the university working in and around the city of Seoul and Chungnam. A total of 274 questionnaires were collected from the 300 distributed. The responding rate was 92.7%. There are two kinds of leadership patterns; directive leadership and supportive leadership. The major findings obtained from this study; as follows. First of all, in the relationship between leadership patterns and work attitude, it is found that they show relatively the deep relationship. especially. In the Organizational commitment, it is found that directive leadership is relatively the higher than supportive leadership. The above results show that supportive leadership positively influences on the organizational work attitude than derictive leadership It is recommended that further studies are needed to decide how do the leader solve the conflict of the relations between labor and management?

소아 확장성 심근증의 임상적 고찰

이성환,김준식,박근수,김명성,권태찬,김천수,이상락 啓明大學校 醫科大學 1996 계명의대학술지 Vol.15 No.1

A Clinical assessment of the 25 patients with dilated cardiomyopathy who were admitted to the Department of Pediatrics, Keimyung University Dong San Hospital from January, 1982 to June, 1993 was performed. The result were as follows: 1) Among 25 patients with dilated cardiomyopathy. 8(32%) were younger than 1 year of age at the time of admission. 2) Adriamycin toxicity was the only encountered etiologic factor in 1 patient. 3) On admission, hepatomegaly and tachycardia were noted in almost all patients. 4) The Chest X-rays showed cardiomegalies in all 25 patients, pulmonary vein congestions in 15(60%) and pleural effusion in 2(8%). 5) The electrocardiography showed left ventricular hypertrophy in 72% and supraventricular tachycardia in 32%. 6) The echocardiographic examination showed left ventricular dilatations in all patients and left atrial dilatations in 20(80%). 7) Of 18 patients who had followed mean period of 2.9 years, 10 patients died within 9 months after the diagnosis.

원통형 연소실에서 단발 분출화염의 온도분포에 관한 연구

김춘중,최태환 영남이공대학 산업기술연구소 2003 産業技術硏究 Vol.15 No.-

Many researches about the combustion process gas temperature and velocity in a constant volume combustion chamber have been conducted. The temperature and the distribution of velocity in the combustion chamber have a large influence in the combustion process. Temperature distribution and their histories of jet flame in a constant combustion chamber were measured by a laser rayleigh pyrometer , as a fundamental study of the combustion process in a spark ignition engine. It makes this study get the important data of temperature histories and flame state of jet flame.

급성골수백혈병에 대한 관해유도화학요법 후의 Granulocyte Colony-stimulating Factor의 효과

윤환중,최지영,전의건,길준영,조덕연,김삼용 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

Granulocyte colony-stimulating factor(G-CSF) have been shown to hasten the recovery of neutropenia following anti-cancer chemotherapy. There are controversial opinions on the use of G-CSF in acute myelogenous leukemia(AML) because clonogenic studies have shown that G-CSF stimulates leukemic colonies as well as granulocyte colonies. In this study, we evaluated the effectiveness and safety of recombinant human G-CSF after induction chemotherapy with DAV regimen(Ara-C 100mg/㎡ day 1-8, Doxorubicin 45mg/㎡ day 3-5, VP-16 100mg/㎡ day 6-8) in 9 patients with AML. G-CSF therapy(200 ㎍/㎡/day) was begun 2 days after the end of chemotherapy and continued for 10 days. 17 AML patients who recieved the same chemotherapy before the onset of this study were used as historical control. G-CSF shortened the duration of granulocytopenia (less than 500/㎣) significantly (13 vs 23 days, p<0.001), but it had no effect on platelet recovery. Although the incidence of febrile episodes was almost the same, the duration of febrile episodes was shorter in the group treated with G-CSF( 5 vs 12 days, p=0.03). There was no evidence that G-CSF accelerated the regrowth of leukemic cells and the complete remission rates between the 2 groups were not different. These results show that G-CSF accelerates the recovery of granulocytopenia and shortens the febrile days after chemotherpy in patients with AML, without affecting the regrowth of leukemic cells.

여성 가성 반음양 치험례

구상환,정전은,정영덕 大韓成形外科學會 1989 Archives of Plastic Surgery Vol.16 No.6

Normal sexual differentiation is the result of a series of individual steps that occur in an orderly fashion. Initially, chromosomal factors direct the defferentiation of the indifferent gonad into either an ovary or a testis. Then, under the influence of hormones secreted by the fetal testes, differentiation of the internal ducts and external genitalia is completed. Consequently, normal sexual differentiation can be subdivided into three separate events: differentiation of the gonads, development of the internal ducts and differentiation of the external genitalia. However, during embryogenesis any disturbance of the various steps in normal sexual differentiation may be reflected clinically as a disorder of intersexuality e.g. chromosomal anomalies, female pseudohermaphroditism, and male pseudohermaphroditism, etc. Genetic females with female pseudohermaphroditism have virilization of the external genitalia produced by intrauterine exposure to excessive androgen. But, because they normally developed ovaries and Mullerian derivatives, they are all potentially fertile. The degree of masculinization varies depending on the stage of differentiation at the time of exposure, from clitoral hypertrophy to true phallic-urethral formation with labioscrotal fusion. The most common cause is congenital adrenal hyperplasia in which cortisol synthesis is impaired due to deficiency of 21-hydroxylase. In attempting to compensate for lower cortisol levels, ACTH stimulates the adrenal gland to secrete excessive quantities of androgen. We experienced a 2 year-old girl, who expressed genital anomalies such as greatly enlarged clitoris-like male phallus associated with posterior labial fusion and a single perineal urogenital orifice which were first noticed by her parents since birth. The general assessment was normal and the karyotype was 46XX as normal genetic female. Plasma testosterone, ACTH, DHEAS, progesterone, and urinary 17-KS values were higher than normal, but cortisol was within normal value. Her blood pressure and serum eleotrolytes were normal. IVP, abdominal sonogram, retrograde cystogram and vaginogram were found to be normal. Explorative laparotomy and constructive operation of female external genitalia including vaginoplasty using inverted Y-shaped skin flap and clitoridectomy were performed under general anesthesia. Both adrenal glands revealed hyperplastic only, and both ovary was excised in wedge shape for shitologic examination. She was finally diagnosed as female pseudohermaphroditism due to congenital adrenal hyperplasia accompanied by incomplete deficiency of 21-hydroxlase, and hormonal therapy was started with hydrocortisone 15㎎/day in three divided dose for 1 month. The value of 17-KS in 24 hour urine study during follow-up period was within normal limit as 1.3㎎/day at POD ￠1 month, 0.7㎎/day at POD ￠2 month, 1.0mg/day at POD ￠6 month, 0.8mg/day at POD ￠16 month. Results of vaginoplasty, clitoridectomy, and hormonal therapy was satisfactory, and there was no recurrence or prematurity.

인쇄체 한글의 자소 인식에 관한 연구

楊天錫,徐聖煥,河錦淑 대구산업정보대학 1993 논문집 Vol.7 No.-

In this paper, Preprocessing(Thinning) Printed Korean Character was studied Algorithm in terms of the Blocking Masking and Decision step by effective Recognition. The results were as follow ; The Recognition Rates were 98 Percents. And Average Recognition Time were 0.42 seconds. Then the Recognition Rates was obtained a high compression Error by the Preprocessing. The effective Mesh Vector Method Required for study.

보신 관광에서 감염된 수입성 Sparganosis 1예 : Intake of Thailand Snake during Trip

서환조,박명재,고경식,백영한,조유정,양현종,류경남,정형근,전정열 대한감염학회 1992 감염 Vol.24 No.1

Human sparganosois was reported more than 100 cases in Korean population. However no case reported yet in Korea as a patient was infected by sparganum from other geographical area, such as Thailand. The case we are reported here is a 38 year-old Korean male who had been suffered from mass being a small, round and soft consistance in upper portion of his right thigh. The patients stated that he had an opportunity to eat living snake in Bangkok, Thailand during trip. As therapy praziquantel (75㎎/㎏/day) was given p.o. for 14 days, but in vain to cure. Following medical treatment, surgical exicision was performed to remove a alive, soft, whitish-milky, mobile and elongated sparganum. Serlogical test by micro-ELISA for sparganum-specific antibody revealed a high serum antibody level of absorbance 0.67 (positive criterion: absorbance 0.22).

닥터소음의 피드포워드제어에 관한 연구

김천덕,차경환 釜山水産大學校 1989 釜山水産大學 硏究報告 Vol.29 No.1-2

This paper has described the efficiency for the new method of the active control of the duct noise which is adaptive filtering application by experiment which set the additional sound source. Firstly the active noise control system becomes stable since the acoustic feed back quantity can be set under -30 dB by setting the additional sound source at an excite of duct and for the signal which is supplied to additional sound source by the setting the microphone at the upstream of duct. Secondly, since the noise of duct output and additional sound source constructs dipole source, radiating power will be decreasing over all the direction in comparison with the case without the additional sound source in the range of frequency which the distance between the duct and the additional sound source is shorter than wave length that is a center frequency of the duct noise. The result of noise cancelling amount for simulation and fan noise experiment by the active control system has been attenuated about 5∼6 dB by only using the proposed active control system and about 9∼10 dB can be attenuated by using adaptive filtering algorithm with the proposed active control system on the desired frequency band.