• 한국가구학회지
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• 제20권3호
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• pp.239-246
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• 2009

The joinery technique, as one of manufacturing techniques for the wooden furniture, influences the production process, the economic efficiency, and the diversification of design. Especially, the usage of machine tools can determine how much the students can enhance their design expression capabilities during the practice class in furniture design courses of domestic universities, in accordance with whether to utilize the machine tools or not, and how much and frequent to use the machine tools. The study proved that the joinery techniques, based on the high-tech machine, has more efficiencies in the various aspects, including the easiness to manufacture the products, and the diversity of design than the joinery technique, based on the handcraft-only. As the ground of this, this study estimated the time to produce the wooden furniture by machine tools and by handcraft-only, each. Also, this study show the comparison of the features of three different joinery techniques. On the basis of this comparison, this study made the conclusion that the machine-based joinery technique, which is used in the practice class, is the best method to bring the best results in manufacturing the wooden furniture.

• Parasites, Hosts and Diseases
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• 제27권2호
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• pp.141-144
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• 1989

1987년 10월부터 12월에 걸쳐 경기도 포천군 이개 부락과 경상남도 진해시 일개 부락에 서 채집한 등줄쥐(Apedemus agrariuscoreae)의 이개에 기생한 털진드기유를 조사하여 다음과 같은 결과를 얻었다. 채집된 171필의 등줄쥐 중 58필에서 털진드기가 잡혀 기생률은 33.9%이었다. 그 중 한 종만 발견된 숙주가 27필(46.6%)로 가장 많았고, 기생 종수가 많아질수록 감소하였으며 5종이 기생하는 쥐는 2필(3.4%)뿐이었다. 총 865개체의 털진드기 유충을 동정한 결과 Leptotrombidium Pallidum (4.3%), L. palpate(23.0%), L. orientalis(20.2%), L. wetum(19.0%), Neotrombicula tamiyai (32.9%), N. japonica(0.2%) 및 Euschongastia koreaensis(0.3%)의 7종이 확인되었다. 그 중 N. tamiyai가 285개체(32.9%)로 가장 많았으나 이 종은 일개 지역에서 12월에만 집중 채집되었으므로 우리 나라 우점종은 전 조사지역과 기간에 고루 분포되어 있는 것으로 나타난 L. palpale라 추측된다. 쭈쭈가무시병의 매개종인 L. pallidum은 37개체가 채집되어 전체의 4.3%에 불과하였다. 한 숙주에 기생하는 털진드기의 밀도는 1개체로부터 최고 207개체까지 심한 차이를 보였는데 개체마다 한 두 종이 집중 기생하는 경향을 나타내었다.

• 대한한의학원전학회지
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• 제11권2호
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• pp.170-202
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• 1998

Lee Shi Zhen(李時珍) raised a question in argument on the writer of Bao Ming Shi(保命集), which had been believed to be written by Liu Wan Su(劉完素), arguing that Bao Ming Shi(保命集), also called Huo Fa Ji Yao(活法機要), was written by Zhang Yuan Su(張完素). There were three representative arguments on the writer of Bao Ming Shi(保命集). One suggested that it was written by Zhang Yuan Su(張完素) while the other argued that it was definitely written by Liu Wan Su(劉完素). And another suggested thai it was edited by posterity by combinding the works of the former two miters. After this study, it was found that Bao Ming Shi(保命集) has Liu Wan Su(劉完素) and Zhang Yuan Su(張完素)'s unique medical thoughts in many descriptions resulting in controversial dispute. Through these arguments, a new hypothesis has been made that the third person who had studied Liu Wan Su(劉完素) and Zhang Yuan Su(張完素)'s medical thoughts wrote Bao Ming Shi(保命集). Liu Wan Su(劉完素) and Zhang Yuan Su(張完素) were quite different in medial thoughts and their works and they found different school, respectively. Therefore, if Bao Ming Shi(保命集) was written by Liu Wan Su(劉完素) or Zhang Yuan Su(張完素), it is impossiple that Bao Ming Shj(保命集) has the two medical thoughts in many descriptions. So, it is regarded reasonable to argue that the person who had aquainted with the two medical thoughts wrote this book. Then enother question can be raised : why the persion wrote Bao Ming Shi(保命集) which integrated the two medical thoughts and. The answer is as follows. Liu Wan Su(劉完素) and Zhang Yuan Su(張完素) became the rounders of He Jian(河間) school and Yi Shui(易水) school, respectively, which have considerably affected later generations, suggesting advanced medical theory. The medical thoughts suggested by the two were sure advanced compared with the former generation, but subjective and biased enough be critisized. So, it is thought that the third person wrote Bao Ming Shj(保命集) to recover those demerits and to describe more advanced medical theory. Zhongyi Xueshushi(中醫學術史) suggests that posterity edited Bao Ming Shi(保命集) by combinding Liu Wan Su(劉完素) and Zhang Yuan Su(張完素)'s works, which is different flam my suggestment. In above description, it is said that the two medical thoughts were quite different, but Bao Ming Shi(保命集) has well-understood medical thoughts containing the two medical thoughts in chaptor to chaptor, and well coincides from cover to cover, which shows that it is written by one person not edited by posterity. My hypothesis can admit other arguments on the writer of Bao Ming Shi(保命集), recover the bias of those argument and solve the questions raised in other arguments. Therefore, I suggest that the person, who was well aquainted with Liu Wan Su(劉完素) and Zhang Yuan Su(張完素)'s medical thoughts, wrote Bao Ming Shi(保命集) to describe more advanced and complete medical theory by amending the bias and taking the merits of the two medical thoughts.

• 한국컴퓨터정보학회논문지
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• 제15권4호
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• pp.83-90
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• 2010

무선센서네트워크에서는센서노드로부터전송된데이터는채널의노이즈등의요인으로 오류가 일어나기 쉽다. 센서 네트워크는 엄격한 에너지 제안이 있기 때문에 에너지가 효율적인 오류 정정 방법을 사용하는 것이 중요하다. 본 논문에서는 낮은 전송 전력으로 전송한 데이터를 RS 코드를 적용하는 방식을 제안하고, 시뮬레이션과 실험을 수행한다. RS 코드는 데이터에 추가한 리던던시로 동작한다. 인코드 데이터는 저장되거나 전송될 수 있다. 오류가 발생했을 때 인코드된 데이터는 복원된다. 추가된 리던던시는 디코더에서 수신된 데이터에서 오류가 있는 부분을 감지하고 정정하는 데에 사용된다. RS 코드가 정정할 수 있는 오류의 수는 추가되는 리던던시에 의해 결정된다. 실험 결과 저전력 통신에서의 높은 안정성을 확인하였다. 1분마다 32바이트를 전송할 경우 RS(15,13)은 173.7일, RS(31,27)은 169.1일, RS(63,57)은 163.9일, RS(127,115)는 150.7일, RS(255,239)는 149.7일의 수명을 예측할 수 있었다. 패킷 수신 확률(PRR) 실험에 RS(255,239)를 적용하여 약 3m 전송거리가 증가함을 확인하였다.