• 제목/요약/키워드: Deng-Kyun

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무미와 단미로 특징되는 동경이에 대한 연구 (Study on Dongkyung-i Dog Characterized as Anury and Brachyury)

  • 조성진;박영석;이은수;이현아;김옥진
    • 한국임상수의학회지
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    • 제25권1호
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    • pp.15-18
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    • 2008
  • 최근 댕견으로 불리는 동경이에 대한 과학적 연구는 현재까지 거의 없는 실정이며, 본 연구는 동경이의 형태학적 특징을 조사하기 위하여 수행되었다. 연구 결과 동경이는 활동적이고 체격이 단단하고 사람과 친화적인 것을 알 수 있었다. 형태학적으로 평균 22.6kg의 체중을 보여 중형견으로 분류되었고 피모색은 주로 황갈색으로 짧은 털을 가지고 있었고 외관상 골반이 단단하고 꼬리가 없거나 매우 짧았다. 방사선학적 연구 결과 꼬리의 미추가 형성되지 않았거나 미약한 것을 알 수 있었다. 이러한 연구 결과로부터 한국 고유 품종의 하나인 동경이의 특징은 무미 또는 단미인 것을 알 수 있었다. 향후 혈통에 대한 유전학적 연구의 진행으로 한국 고유의 특성 있는 품종의 개발 가치가 있을 것으로 판단된다.

Multi-level DVS Guidance and Output-feedback Path-following Control for Marine Surface Vehicles

  • Deng, Ying-Jie;Im, Nam-kyun
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2018년도 추계학술대회
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    • pp.256-257
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    • 2018
  • This paper deals with the path-following control for marine surface vehicles with underactuated characteristics. In consideration of practical limitations of actuators, an improved DVS(dynamic virtual ship) guidance algorithm is proposed with the multi-level DVS optionally selected to be tracked. To address the output-feedback control issue, an adaptive FLS(fuzzy logical systems) is devised to online approximate the kinematic states. Based on that observing framework, the path-following control law is thereafter derived. Simulations testify effectiveness of the proposed scheme

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Short-term, Multi-center Prospective Clinical Study of Short Implants Measuring Less Than 7mm

  • Kim, Young-Kyun;Yi, Yang-Jin;Kim, Su-Gwan;Cho, Yong-Seok;Yang, Choon-Mo;Liang, Po-Chin;Chen, Yu-Yal;I, Lee-Long;Sim, Christopher;Tan, Winston;Ser, Go Wee;Yue, Deng;Yi, Man;Ping, Gong
    • Journal of Korean Dental Science
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    • 제3권1호
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    • pp.11-16
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    • 2010
  • Objective : This prospective study sought to verify the stability of three types of short implants measuring 7mm or less. Materials and methods : Implants measuring 7mm or less were placed in patients at multicenter dental clinics in Korea, China, Taiwan, and Singapore. Initial stability, intraoperative and postoperative complications, crestal bone loss, and survival rate of the implant were prospectively evaluated. Results : The primary stability of a 6-mm implant was lower than that of a 7-mm implant. The marginal bone loss of short implants measuring less than 7mm was minimal. Complications such as wound dehiscence, implant mobility, and peri-implant mucositis developed, and these were associated with initial implant failure. The short-term survival rate of 6-mm implant was 93.7%, and that of 7-mm implant, 96.6%. Conclusion : Short implant for the mandible with insufficient height for the residual ridge can be selectively used. Poor primary stability and wound dehiscence can cause osseointegration failure and alveolar bone loss.

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