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한국 근해 복수어구 및 다종어업 자원 평가모델 연구 I. 단일어구에 의한 다종자원의 이용
서영일,장창익,SEO Young Il,ZHANG Chang Ik 한국수산과학회 2001 한국수산과학회지 Vol.34 No.4
본 논문은 한국 근해 다종어업 자원의 평가모델에 대한 연구결과로서 대형기선저인망쌍끌이어업과 같은 단일어업에 의하여 다종자원을 이용하는 형태이다. 단일어구에 의한 다종자원의 평가모델은 단일어구에 어획되는 다종자원 중 어획량비율이 상위를 차지하는 어종을 선별한 후 각 어종에 대한 혼획율 및 자원생태학적 특성치를 추정하여 Beverton and Holt (1957)의 가입당생산량 모델을 변형시킨 다종가입당 생산량모델을 이용하는 것이다. 이 모델은 현재의 $t_c$에서 다종에 대한$F_{0.1}$에 해 당하는 F값을 구하여 각 어종별 가입당산란자원량 모델에 적용하였으며, 이때의 산란자원량 수준인 $F_{x\%}$를 추정하여 자원평가에 이용하였다. This paper presents case studies on the multi-species fisheries in Korean waters. Multi-species fisheries were divided into two types, that is, multi-species by a single fishery and single species by multiple fisheries. For the case of the multi-species by a single fishery, a multi-species yield-per-recruit model was applied to the Korean pair trawl fishery, which exploits demersal fishes such as, hairtail (Trichiurus lepturus), small yellow croaker (Pseudosciaena polyactis), white croaker (Argyrosomus argentatus) and pomfret (Pampus echinogaster). The overall fishing mortality ($F_x$) values for the multi-species was estimated and compared to the spawning potential ratio ($F_{x\%}$) val ues estimated from the spawning biomass-per-recruit model.
徐榮一 한국문화사학회 2002 文化史學 Vol.0 No.17
This article is about the Koguryo(高句麗) Fortresses which are located northern boundary on Kyunggi province.(京畿道) Those Fortresses that are small, respectively less than 400 meters round can be divided into the three districts. These districts are the Ahcha mountain, the Yangju basin and the northern boundary of the Imjin river. Until now, many scholars thought that Those Fortresses were made by Koguryo in the same period. However, in case of the Fortresses in the Yangju basin were used by Bakje(百濟) and Shila(新羅) as well. To confirm when the Fortresses were made and were used by whom, this article researches many historical records and archeological materials. This historical and archeological study help to reveal that the Fortresses which are located in the Ahcha mountain district were made in the middle of 6th century, in the Yangju basin district were made between in the middle of 6th century and the early 7th century and in the northern boundary of Imjin river were made from 475 year to 668 year. The Fortresses in the Ahcha mountain district usually used for military purpose. Because the Ahcha mountain fortresses shows dense pack deployment. The Fortresses in the northern boundary of Imjin river are scattered along the river. These Fortresses used for communication. The Fortresses in the Yangju basin is believed that Shila made for defense against attack from the Koguryo. After the front line came down, Shila made huge Fortresses at strategic point like the Ahcha mountain Fortress, the Yangju mountain Fortress, the Banwal mountain Fortress and the Chiljung Fortress. During, and after building huge fortresses, Shila military didn't use the small fortresses. Finally, the small fortresses had abolished on the contrary Shila's administrative control increased to.
서영일,조영진,문병선,박종진,박종찬,박남규 한국화재소방학회 2008 한국화재소방학회논문지 Vol.22 No.2
According to the Fire Services Act revised in 2005, it has been required to set up sprinkler systems to all floors to the newly builded apartments having above 11 floors. But, according to the Fire Services Act before 2005, it had been required to set up sprinkler systems from 16 floors to the top floors to the apartments having above 16 floors. This case is the accident that a victim was dead by the fire which is inferred as an accidental fire by a cigarette butt in a 17th floor apartment unit in an apartment having 17th floors and that the bereaved family called in question why the sprinklers non worked at the fire. Through the field investigation, we checked that the sprinklers worked well when the fire detectors at the 16th floor of the apartment were operated and that the sprinklers non worked when the fire detectors at the 17th floor of the apartment were operated. We made clear that the cause of the sprinkler non-working at the 17th floor is the programming error of the sprinkler controller. 2005년 개정된 소방법에 의하면 11층 이상의 신축 아파트는 전(全)층에 스프링클러를 설치하게 되어 있 으나, 2005년 이전의 소방법은 16층 이상의 아파트에 대해서 16층부터 최상층까지 스프링클러를 설치하 여 화재 시에 작동하여 소화를 하게끔 되어 있다. 본 사례는 2005년 이전에 지어진 17층 아파트의 17층 한 가구에서 담배에 의한 실화로 추정되는 화재에 의해 피해자가 사망한 사건으로서 유족 측에서 화재 시에 스프링클러가 정상작동하지 않은 이유에 대해 의문을 제기한 사건이다. 현장조사를 통해 동 아파트 16층에서 화재감지기를 작동시키면 스프링클러가 정상작동 하였으나, 17층에서 화재감지기를 작동시키면 스프링클러가 작동하지 않음을 확인하였고, 동 17층에서 스프링클러가 작동하지 않은 원인이 스프링클러 제어기의 프로그래밍 결함에 있다는 것을 밝혔다.