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

특이한 악관절 강직증 : 진성 악관절 강직증과 상악골과 하악골 사이의 골성 유합

서재훈,조세인,여환호,이기혁,김영균 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.2

TMJ ankylosis is classified with true and false type. A true ankylosis is defined as any condition that produces fibrous or bony adhesions between the articular surfaces of the temporomandibular joint. The main causes of true ankylosis are trauma or infection. A false ankylosis results from pathologic conditions outside the joint that limit mobility of the mandible such as myogenic disorders, coronoid impingement or rare direct bony fusion between maxilla and mandible. The treatment of choice of TMJ ankylosis is surgical intervention. We experienced the male patient with complete mouth opening limitation since 45 years before. This patient has true TMJ ankylosis and rare bony synostosis between maxilla and mandible in the right posterior region. We performed surgical intervention and had a favorable result.

특허권 강화는 기술혁신을 촉진하는가? : 한국의 특허법 개혁을 중심으로 Evidence From the Korean Patent Law Reforms

徐煥周,鄭東進,宋鍾國 한국국제경제학회 2004 국제경제연구 Vol.10 No.2

1970년대 말 이후 취해진 미국의 일련의 특허권 개혁과 1994년에 체결된 TRIPS협약을 계기로 특허권 강화와 기술혁신간의 상관관계에 대한 수많은 실증연구가 1990년대 들어 행하여지고 있다. 그러나 최근의 실증연구결과들은 특허권강화가 기술혁신을 촉진하는 유효한 수단인가에 대해서 명확한 결론을 내리지 못하고 있어, '특허의 역설(Patent paradox)'이라 불리고 있다. 본 연구는 우리나라의 특허 및 연구개발 지출 자료를 활용하여 특허권 강화(특허법개혁)가 기술혁신활동에 유효한 인센티브로 작용하는 지를 살펴보았다. 분석결과 1980년대 말의 특허법 7차 개정과 1990년대 중반의 11차 개정이 연구개발 지출과 특허출원건수로 측정한 기술혁신활동에 긍정적으로 작용하였음을 발견하였다. 그러나 우리의 추정방법이 제도개혁의 직접적인 영향만을 추정하는 것이 아니라 여타의 거시적 충격까지 포함할 가능성이 있기 때문에 조심스러운 해석을 요한다. By influencing the incentives to innovate, the strengthening of patents may affect economic growth in important way. An important question for many countries is whether patent law reforms induce more innovation. This paper examines the role of patents in innovation, utilizing Korean data on patent applications, expenditure of R&D, sales and concentration ratio. The evidence suggests that the strengthening of patents was a significant determinant of innovation in Korea. However, in our estimations, we do not completely eliminate the effects of other macro shocks. Therefore, we interpretate our results as representing an "upper bound" of Korean firms' responses to patent law reforms.

情報通信技術 擴散이 賃金不平等의 한 原因인가?

徐煥周,許栽準,田炳裕,李榮洙 한국국제경제학회 2004 국제경제연구 Vol.10 No.1

본고는 산업 및 사업체 수준의 자료를 이용한 Mincer류의 임금방정식 추정을 통해 산업간 혹은 사업체간 상이한 수준의 ICT 확산이 동일직능집단 내 임금불평등 확대 및 고직능-저직능노동간 임금불평등 확대에 기여하는지를 탐구하였다. 그 결과 ICT 확산속도의 차이가 부문간 임금격차 확대를 통해 동일직능 집단내 임그불평등 확대에 기여함을 알 수 있었다. 또한 ICT 확산속도의 차이가 집단간 임금불평등 확대에도 기여함을 명시적으로 확인할 수 있었다. 이상을 종합해 볼 때 기술변화속도가 급격한 시기에는 노동수요구조가 고용아정성 및 소득분배 상황을 양극화시키는 경향을 띠므로 근로자의 직업교육 및 직업경험 기회를 확대하고, 저직능근로자에 대한 사회안전망의 충실도를 제고하는 등의 정책적 배려를 강화해야 할 필요가 있다고 하겠다. This paper explores, using the traditional Mincer-type earnings equation augmented by a proxy for ICT progress, whether the differing pace of Information and Communication Technologies (ICT) has an effect on both within- and between-group wage inequalities. We found that the pace of ICT progress caused the widening of both within- and between-group wage inequalities. An important policy implication of this finding is that as the forces of labor demand tend to increase wage inequalities among workers at least until the pace of ICT progress stabilizes, policy measures to provide more opportunities for training and job experience for workers and the extension of the social safety net for vulnerable workers are necessary.

악성종양과 감별이 어려웠던 악안면 영역의 감염질환에 대한 치험례

서재훈,김영균,여환호 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3

It is very difficult to differentiate the malignant tumor from the maxillofacial infections that have unclear cause, severe indurated swelling, pain and nonresponsiveness to antibioitic treatment and incision and drainage. Incisional biopsy, CT, and MRI examination may not distinguish between infection and a malignant tumors. And then, the clinicians can make a mistake that they perform a unnecessary radical surgery because of inaccurate diagnosis. We present three case reports of maxillofacial infectious disease with diagnosis process, treatment and differential diagnosis. The infectious disease were not resolved with antibiotic and surgical drainage. The progression of clinical sign and radiographic, indings of these disease were masqueraded as malignant tumors.

승모판 폐쇄부전증 이환견에서 심장 Troponin I의 예후평가의 중요성

전서강,임수정,김덕환 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2009 動物醫科學硏究誌 Vol.16 No.1

We investigated the relations between serum cTnI concentration and the prognosis in four dogs which admitted to the Veterinary Medical Teaching Hospital of Chungnam National University with clinical signs such as couching, respiratory distress, anorexia, and/or syncope and were diagnosed as a mitral valve insufficiency. While serum cTnI concentration was less than 2.0 ng/ml in case 1,2 and 3, it was 2.5 ng/ml in case 4 which showed the most grave prognosis. Thus, it is assumed that increased concentration of serum cTnI in dogs with mitral valve insufficiency could be an indicator to evaluate patients' prognosis.

암석 류의 파괴인성계수의 측정과 해석방법에 관한 연구

백환조,서백수 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-

암석의 파괴인성계수는 암석이 갖는 불균질성 및 비등방성에 의하여 시험조건에 따른 측정자료의 분산이 심하다. 즉, 시험편의 형태나 크기에 따른 변화가 심하여 기준의 선형탄성 파괴역학 이론의 적용에 문제점이 있는 것으로 지적되고 있다. 이러한 자료의 분산을 최소화하기 위한 방법의 하나로 균열감용도를 적용한 해석을 제시하고 있다. 균열감 용도란 파괴역학 실험 당시 시험편에 가해진 인공 균열의 감응도를 말하며 이는 3점 하중에 의한 파괴가 균열의 성장에 의한 파괴인지, 혹은 단순히 인장파괴에 의한 것인지를 판명함으로써 측정자료의 선택을 명확하게 하기 위한 방법의 하나로 적용될 수 있다.

Stevens-Johnson 증후군: 증례보고 및 문헌고찰

여환호,김영균,서재훈 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.1

The Stevens-Johnson syndrome is a severe form of erythema multiforme associated with multiple organ involvement that can result in severe mortality. There are many etiologic factors including drugs, infection, or stress ; but accurate pathogenesis is still obscure. Treatments are composed of the removal of possible etiologic factors, symptomatic and supportive treatment. We experienced a case of Stevens-Johnson syndrome with involvement of generalized skin, oral mucosa, and eye involvement. This patient was treated by symptomatic and preventive method including corticostervid, antihystamine, and opthalmic treatment.

New Aggregation Algorithm for Tandem queue with Finite Buffers

김종환,Hur, Sung Kwan,徐承祿 大邱大學校附設 基礎科學硏究所 1991 基礎科學硏究 Vol.8 No.-

We consider a two-stage fmite tandem queueing system with Poisson arrivals and negative exponential service times. The customer who has completed his service at the first station has to go directlty to the second station. If the queue of the second station is full at the moment of the service completion of the customer at the first station, then the customer receives, another service at the first station. This is repeated until the customer completes a service at the first station at the moment that the second station is not fulL The problem of calculating the steady-state probabilities of this queueing system by the ordinary balance equations is time consuming. We develop an efficient algorithm to obtain the steady-state probabilities that utilize the two-way state aggregation techniques.

포도나무가지의 휴면 시기 및 지역별 저온 내성에 관하여

정삼택,서정호,여환면 慶北大學校農業科學技術硏究所 1998 慶北大農學誌 Vol.16 No.-

충북 영동, 경북 경산과 경주에서 1996년 12월과 1997년 1월에 포도나무 가지를 채취하여 저온에 대한 내성을 검토한 결과 다음과 같은 결론을 얻었다. 1. 포도 Campbell Early 품종의 E.C.를 보면 12월 중의 저온에 대한 내성은 각 지역별로 차이가 인정되지 않았으나 1월은 경주에서 재배되는 것이 가장 피해가 적었고, 충북 영동의 것이 피해가 가장 많았다. 2. Sheridan 품종 역시 12월의 E.C.가 영동에서 피해가 많았다. 경주와 경산에서는 피해가 적었다. 그리고, 1월은 전반적으로 피해가 많았다. 3. 눈의 갈변도 측정에서 두 품종 모두 영동지역에서는 12월이 1월보다 피해가 심하였고, 경북 경산, 경주 지역은 12월과 1월 모두 영동지역보다 피해가 적었다. 4. 수피 갈변도 측정에서 눈의 갈변도와 같은 경향으로 영동 지역에서 12월 휴면 초기가 피해가 심하였고, 1월은 저온에 강한 편이었다. 5. 눈의 맹아율은 12월에 -20℃에서도 맹아가 되었으나 1월에는 영동을 제외한 경산과 경주에서는 맹아율이 높았고 영동지역에서는 -15℃와 -20℃에서 낮았다. This experiment was conducted to know tolerance to cold temperature of the grape shoots collected at different locations and dormant periods in 1996 to 1997. The results from this experiment were as follows; (1) There is a little difference among locations in their electric conductance of Campbell Early cultivar, in Dec. 1996. But the least damage was shown at Kyung Joo while severe at Young Dong district in Jan. 1997. (2) Electric conductance of Sheridan cultivar was showing the same tendency as Campbell Early. (3) Early dormant period(December) affected severe bud browning at Young Dong than that of January. The grape shoot collected at Kyung San and Kyung Joo Showed a little influence on bud browning during December and January. (4) Likewise, bark browning of the grape shoot collected at Young Dong showed the same tendency with bud browning test. (5) The bud of grape shoot was bursted even at -2 0℃. But rate of bud bursting was lower at Young Dong than the other districts at -15℃ and -20℃. From these results, the authors believe that we must introduce and test for suitable cultivation area and temperature before selection of permanent cultivating location.