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한국의 무역구조 변화: 미,일,중과의 산업내무역을 중심으로
강승호,박현옥 한중사회과학학회 2005 한중사회과학연구 Vol.6 No.-
我國交易結構從以美國和日爲主轉變爲以美國, 日本, 中國爲主。韓, 中, 日等東亞地區內交易規模處于每年增加的趨勢。這是與向中國的直接投資的增加以及在中國生産最終産品后向歐美等區外國家出口的增加有着密切的關系。從與美國, 中國的交易中我國取得剩余而근日本的交易有逆差。 但是貿易順差幷不意味着我國具有動態競爭優勢。在國際貿易, 交易同一范疇內産品的産業內貿易(intra-industry trade)呈現出增加的趨勢,進口低附加産品同時出口高附加産品的比重不斷增加的時候才算是我國具有競爭優勢。通過1993~2004年(12年)垂直産業內貿易的分析,我們發現韓中兩國之間有韓國優勢的垂直産業內部(分工)關系,但是韓國與美國和日本建立了韓國劣勢的垂直産業內貿易(分工)關系。尤其是,韓國雖然從韓美交易中取得剩余,但是在98年以來質量優勢的垂直産業內貿易的指數低于5%(2004年産業內貿易的指數爲34.4,質量優勢的垂直産業內貿易的指數僅爲1.6),因此我國急需采取相應的措施。영外我國在與中國的産業內貿易中保持質量優勢的交易結構,但是水平(橫向)産業內貿易的增速快于垂直産業內貿易的減速,幷且質量劣勢占垂直産業內貿易的比重緩慢的增加而質量優勢的比重緩慢的減少。
Does the traditional snakebite severity score correctly classify envenomated patients?
강승호,문정미,전병조 대한응급의학회 2016 Clinical and Experimental Emergency Medicine Vol.3 No.1
Objective This study aims to help set domestic guidelines for administration of antivenom to envenomated patients after snakebites. Methods This retrospective observational case series comprised 128 patients with snake envenomation. The patients were divided into two groups according to the need for additional antivenom after the initial treatment based on the traditional snakebite severity grading scale. One group successfully recovered after the initial treatment and did not need any additional antivenom (n=85) and the other needed an additional administration of antivenom (n=43). Results The group requiring additional administration of antivenom showed a higher local effect score and a traditional snakebite severity grade at presentation, a shorter prothrombin and activated partial prothrombin time, a higher frequency of rhabdomyolysis and disseminated intravascular coagulopathy, and longer hospitalization than the group that did not need additional antivenom. The most common cause for additional administration was the progression of local symptoms. The independent factor that was associated with the need for additional antivenom was the local effect pain score (odds ratio, 2.477; 95% confidence interval, 1.309 to 4.689). The optimal cut-off value of the local effect pain score was 1.5 with 62.8% sensitivity and 71.8% specificity. Conclusion When treating patients who are envenomated by a snake, and when using the traditional snakebite severity scale, the local effect pain score should be taken into account. If the score is more than 2, additional antivenom should be considered and the patient should be frequently assessed.
강승호,이병길,김철환 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.1
High impedance fault(HIF) is defined as the fault that cannot be detected or removed by conventional overcurrent relays(OCRs). When HIF occurs in residential areas, energized high voltage conductor results in fire hazards and causes damages in electrical equipments or personal threat. This paper proposes the fault classification of not only LIFs but also HIFs using artificial neural networks. In this paper, classification of faults in transmission line is performed using the instantaneous 3-phase currents. Test results show that the neural networks were able to classify the faults including HIF accurately in transmission lines within a half cycle.
신경회로망을 이용한 송전선로 고장거리 추정에 관한 연구
강승호,이병길,김철환 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.1
When faults occur in transmission lines, protective relays need to operate fast and accurately to protect transmission lines and electrical equipments and to supply power with good quality. To advance the reliability of power network, the accurate fault detection and fault distance estimation must be implemented. This paper proposes the fault distance estimation method using artificial neural networks. In this paper, fault distance estimation is performed using fundamental component of 3-phase voltages and currents. To evaluate the performance of the technique using artificial neural network, the propriety of fault distance estimation is verified using EMTP(Electromagnetic Transient Program).
현재 국내임상시험에서 독립적 자료모니터링위원회의 필요성
강승호,Kang, Seung-Ho 한국통계학회 2009 응용통계연구 Vol.22 No.2
Adaptive Design은 임상시험 도중에 얻어진 자료에 대해 중간분석을 실시한 결과에 따라 임상시험의 중요한 요소들을 변경할 수 있도록 하는 디자인이다. 이러한 시험디자인이 치료적 확증 임상시험에 사용되는 경우, 중간분석은 임상시험에 참여하지 않은 전문가들로 구성된 독립적인 기구에 의하여 수행되어야 하며, 그렇지 않은 경우 bias(삐뚤림)를 유발시킬 수 있음을 여러 국제 가이드라인을 인용하여 지적할 것이다. 국제 가이드라인들은 중간분석의 독립적인 수행을 위하여 Independent Data Monitoring Committee(독립적 자료모니터링 위원회)를 둘 것을 권고하고 있다. In adaptive designs important components of clinical trials may be changed based on the results of interim analysis. Several international guidelines point out that such interim analysis should be performed by independent experts who do not participate in clinical trials when adaptive designs are used in therapeutic confirmatory clinical trials, and if not, it may cause bias. The international guidelines recommend the establishment of independent data monitoring committee for conducting interim analysis independently.