• Title/Summary/Keyword: 상하요 운동

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Development of a Simultaneous Seed Separation and Drying Method of Red Pepper -Part I. Red Pepper Seed Separation Methods and Their Momentum Analysis- (고추의 동시탈종(同時脫種) 건조방법(乾燥方法)의 개발(開發)에 관한 연구(硏究) -제1보 고추씨의 분리방법(分離方法)과 운동량(運動量)의 분석(分析)-)

  • Chun, Jae-Kun;Park, Sang-Ki
    • Korean Journal of Food Science and Technology
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    • v.9 no.1
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    • pp.61-67
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    • 1977
  • Seed separation from half-cut red pepper were investigated with free falling, up-and-down shaking and rotating collision methods. The separation rates were related with impact appiied and the rotating case was distinguished from the other two methods. Beside the impact effect, velocity of the pod and tumbling factors were involved. Momentum effectiveness of seed separation were calculated as $2.50{\times}10^{-6}$, $2.09{\times}10^{-6}$, and $3.94{\times}10^{-8}$ for free falling, shaking and rotating method on the same velocity basis, respectively. The tendency of separation rate was similar to that of red pepper drying rate against time.

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A Study on Motion Response of Small Fishing Vessels According to Various Tonnage in Regular Waves (소형어선의 크기에 따른 규칙파 중 운동응답 특성에 관한 연구)

  • Im, Nam-Kyun;Lee, Sang-Min
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.27 no.6
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    • pp.832-838
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    • 2021
  • Recently, reports of marine accidents of small fishing vessels less than 10 tons have been increasing. In this study, the characteristics of the motion response in regular waves were analyzed using computations for these ships. Small vessels less than 10 tons are classified by size and used for marine accident investigations. Therefore, the motion response analysis was performed on three small fishing vessels of different sizes. In the case of the head sea, it was confirmed that as the speed of the vessel increased in the long wavelength region, the motion responses of heave and pitch became large. The motion response of the smallest 3-ton fishing vessel was greater than that of the other sizes of fishing vessels. The maximum value of the roll motion shifted to the long wavelength region as the speed gradually increased in the bow sea, regardless of the size of the ship. In all the three small fishing vessels, it was found that the roll motion was the greatest at 15 knots, the highest speed in both bow and beam seas. When sailing in the head sea and bow sea conditions, lowering the speed is one of the effective approaches to reduce the effects of the vertical and lateral plane motions. The roll motion caused by the beam wave showed a tendency to increase rapidly only at a specific wavelength regardless of the speed and the size of the vessel. It was confirmed that the roll motion was significantly reduced with forward speed in the stern wave compared to the bow wave. As there is a specific region where the maximum value of the hull motion response appears depending on the size and speed of the ship, an operation method that can minimize the effect of this motion should be considered and implemented.

A study on the modeling of axis-direction belt movement in the 3 cylinders-belt system (3 cylinders-belt system에서의 축방향 belt운동 modeling에 관한 연구)

  • Heo, Yu;Hong, Seung-Kwan
    • Proceedings of the Korean Fiber Society Conference
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    • 2002.04a
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    • pp.69-72
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    • 2002
  • 섬유산업은 fiber로부터 시작하여 yarn, fabric을 거쳐 최종 섬유제품인 clothing을 생산하는 긴 stream을 가지고 있으며, 이와 같이 여러 단계의 공정을 거치는 가운데 섬유물은 새로운 형태를 가지게 되며 부가가치가 형성된다. 특히 garments manufacturing 공정에는 fusing press기가 사용되는데 이 방식은 같은 각속도와 지름을 가진 cylinder로 구동되는 두 개의 상하 벨트구동기구와 내부에 열전식 heather로 구성되어 상하 벨트의 내부로 원단과 심지를 통과시키며 열을 가함으로써 원단과 심지를 접착시킨다. (중략)

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Phase Separation Structure of (PVC/Liquid Crystal) Composite Membrane ((Polyvinylchloride/액정) 복합막의 상분리 구조)

  • 이미선;최성부;이한섭;박관선;김병식
    • Proceedings of the Membrane Society of Korea Conference
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    • 1998.04a
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    • pp.68-69
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    • 1998
  • 1. 서론 : 고분자/액정 복합막은 액정의 높은 분자운동성이 물질의확산에 기여하여 우수한 투과성을 나타낸다. 이 막은 3차원의 망상구조를 갖는 매트릭스 고분자내에 액정이 연속상으로 안정하게 분산된 상분리 구조를 가지고 있다. 이 복합막은 그러한 상분리 구조에 기인하여 자기지지형(self support LC) 복합막이라고도 한다. 복합막 중에 액정은 탄화수소가스에 대하여 높은 선택성을 나타내어 막속으로 흡착을 촉진하고 액정물질이 결정에서 액정으로 변화는 전이온도에서 투과계수가 100-200 증가한다고 보고하였다. (생략)

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Diagnosis with Ultrasound for Rib Fractures in the Golf (골프 운동중 발생한 늑골 골절의 초음파 진단)

  • Lim, Che-Joon;Youn, Te-Hyun;An, Ki-Yong
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.7 no.1
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    • pp.50-54
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    • 2008
  • Purpose: In most cases, the main cause of chest or back pain during playing golf is rib fractures. This kind of rib fractures can be easily overlooked in plain radiographs. The purpose of this article is to clarify the value of the ultrasound in detecting rib fractures. Materials and Methods: We compared the findings of chest-X rays (anteroposterior, left or right lateral, both oblique view) with those of the ultrasound in 56 patients between the ages of 20th & 60th who were diagnosed rib fractures. Their chief complaints were chest or back pain which developed during playing golf. The results were analyzed statistically. Results: Among 56 cases of rib fractures, 34 cases were diagnosed with initial X-rays. 51 cases were diagnosed with ultrasound. The sensitivity of radiograph and ultrasound were 60.71% & 91.07%, respectively. Dignosis was ultrasound with statical significance whereas radiography did not(p=0.0004). Conclusion: It was concluded that ultrasound is a valuable tool in the diagnosis of the rib fractures which were undetected with X-rays during playing golf.

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The Study on the Process of Public discussion about the On-line civic Social Movement (온라인 시민 사회운동의 공론화 과정에 관한 탐색적 연구: 안티닉스 운동 게시판 분석을 중심으로)

  • Chung, Jae-Chorl
    • Korean journal of communication and information
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    • v.33
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    • pp.253-285
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    • 2006
  • This study focuses on the on-line civic social movement which is based on the individual dimension. This kind of on-line social movement is organized voluntarily by the citizens who have the common concerns about issues and problems raised in the net. In the context, this paper analyzes what is the characteristics of discourse formed in the process of public discussion concerned about the anti-Nix movement. And, this study also analyzed who was processed the anti-Nix movement through which steps and what kinds of way in the case of anti-nix movement. Based on the research results, the anti-Nix movement is led by the organizer of the movement and the active participants of it. This study also found out that the various movement strategies of the site organizer were the major reasons of the success of anti-Nix movement. This study also found out that the discussion board of anti-Nix movement is close to the function and role of traditional public sphere rather than those of the swearwords and libels.

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Ecuadorian Indigenous Movement: The Role of Pachakutik (에콰도르 원주민 운동과 파차쿠틱의 경험: '정치의 종족화'와 '상호문화적 딜레마'를 중심으로)

  • Lee, Seong Hun
    • Cross-Cultural Studies
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    • v.49
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    • pp.249-274
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    • 2017
  • The indigenous movement in Ecuador, which has been one of the most successful social movements since the 1980s, has been declining since the 2000s. The rapid disintegration and weakening of the indigenous movement with the emergence of the Correa regime is closely related to the geopolitical realities of Ecuador. This study examines the Pachakutik, an independent political organization, as the reason behind the movement's weakened political power and crisis that was experienced under the Correa regime since the 2000s. Until the early 2000s, the indigenous movement exercised considerable political power through CONAIE. CONAIE formed the Pachakutik, in order to resolve their issues politically through elections. Despite the successes of the 1990s, the electoral strategy since the 2000s led to eventual fragmentation and decline of the indigenous movement. Therefore, the impact of Pachakutik on the growth and decline of the indigenous movement has important implications for the future. The need for expansion through intercultural discourses and strategies rather than electoral strategies cannot be overstated. In other words, new approaches are needed to sustain the indigenous movement.

An Analysis on the Strategies and Managing Behaviors of the Village Mini-Library Movement in Korea (마을문고운동 추진 전략과 행태에 대한 분석적 고찰 - 새마을운동 체제로의 통합 이전까지를 중심으로 -)

  • Lee, Yong-Nam
    • Journal of the Korean Society for Library and Information Science
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    • v.36 no.1
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    • pp.91-110
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    • 2002
  • This study is to analyze and interpretate strategies and managing behaviors in order to propel village mini-library movement in Korea from the starting year of the village mini-library to 1980. The strategies conducted for propelling the movement can be divided into two: one is the strategies, as an output goal, related to establishing and managing mini-library; the other the strategies, as a support goal, related to carrying out the movement procedures. Therefore, the study is to examine the two strategies individually using by the qualitative research method such as analyzing related historical records and literatures, interviewing the persons concerned. and organizing the author’s experience.