• Title/Summary/Keyword: Stinger

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휴대용 방공유도무기의 비교

  • Mun, Sin-Haeng
    • Defense and Technology
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    • no.9 s.33
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    • pp.39-42
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    • 1981
  • Redey는 1974년 이후에는 생산되고 있지 않으며 Stinger는 1978년부터 생산되고 있고 Stinger/Post는 1982년부터 생산될 계획이라고 판단된다. Stinger Alternate는 실용화되지 않고 있는 것으로 알려졌다.

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A Study on the Epidermal Structure and Mucosubstance Histochemistry of Spotty Belly, Devil Stinger, Stone Fish, Cubed Snailfish, and Japanese Bluefish

  • Jeong, Gil-Nam
    • Animal cells and systems
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    • v.12 no.2
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    • pp.85-91
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    • 2008
  • Structure and mucosubstance histochemistry in the epidermis of five teleostean species, i. e., spotty belly, Agrammus agrammus, devil stinger, Inimicus japonicus, stone fish, Erosa erosa, cubed snailfish, Liparis tessellatus, and Japanese bluefish, Scombrops boops were investigated. The epidermis of five species studied is composed of three layers: superficial, middle, and basal layer. The superficial layer is comprised of rather flattened cells. Mucous cells, the type commonly found in fishes are completely lacking in the epidermis of devil stinger, stone fish, and cubed snailfish. The epidermis of devil stinger and stone fish have multicellular glands which do not have mucosubstances. The skin surface of them is covered with mucous layer. The superficial cells in the epidermis of devil stinger, stone fish, and cubed snailfish are mucus-secreting cells. The composition and the amount of the mucosubstances vary in species and body regions. The mucous layer on the skin surface and superficial epidermal cells of devil stinger contain a mixture of neutral and acidic(sulfated and nonsulfated) mucosubstances. In stone fish, the mucous layer has acidic(sulfated and non-sulfated) mucin and the superficial epidermal cells contain neutral mucin. In cubed snailfish, the type of epidermal mucosubstances is identified as a mixture of neutral and acidic(non-sulfated) mucin. The mucous cells of the epidermis in spotty belly and Japanese bluefish contain neutral mucin.

Analysis on the Measured Natural Frequencies Due to the Structure-Exciter Interaction (구조물-가진기 상호작용에 의한 공진주파수 변동에 대한 해석)

  • Han, Sang-Bo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.20 no.7
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    • pp.2108-2117
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    • 1996
  • The purpose of this paper is to investigate the influence of the exciter attached for the measurement of natural frequencies when extracting the frequency response functions of the test structure in experimental modal analysis. The procedure is first to model the attached exciter as an additional degree of freedom system and next to verify the suggested model by experimentally extracting the natural frequencies of the test structure with various values of exciter mass, stinger stiffness and attachment position of the exciter on the test structure. It is concluded that as additional degree of freedom system which includes the natural frequency of the exciter itself and axial stiffness of stinger should be considered to quantatively define the coupling effects of structure-exciter interaction on the measured natural frequencies. It is not the mass of the exciter itself but the coupling effect of the additional degree of freedom mass-spring system consisting of exciter body and armature coil that characterizes the natural frequency deviation. Therefore, when the natural frequency of this additional mass-spring system is outside of the test frequency range, the coupling effect of structure-exciter interaction can be minimized.

Analysis on the Dynamic Behavior of Shaker (가진기의 동적 거동 해석)

  • 한상보;김윤환;송장규
    • Journal of KSNVE
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    • v.8 no.1
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    • pp.75-80
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    • 1998
  • It is a well known fact that the shaker used in the vibration test interacts with the test structure and thus influences the test results. A two degree of freedom model of shaker is suggested and the vibration parameters of this model is experimentally extracted. According to this experimental results, the vibration parameters of the shaker can vary with respect to the test structure as well as the stinger used in the connecting mechanism. It is also found that the vibration parameters of the shaker provided by the manufacturer can not be accurate and these parameter values should be revaluated based on the test environments.

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Lumbar burner and stinger syndrome in an elderly athlete

  • Wegener, Veronika;Stabler, Axel;Jansson, Volkmar;Birkenmaier, Christof;Wegener, Bernd
    • The Korean Journal of Pain
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    • v.31 no.1
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    • pp.54-57
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    • 2018
  • Burner or stinger syndrome is a rare sports injury caused by direct or indirect trauma during high-speed or contact sports mainly in young athletes. It affects peripheral nerves, plexus trunks or spinal nerve roots, causing paralysis, paresthesia and pain. We report the case of a 57-year-old male athlete suffering from burner syndrome related to a lumbar nerve root. He presented with prolonged pain and partial paralysis of the right leg after a skewed landing during the long jump. He was initially misdiagnosed since the first magnet resonance imaging was normal whereas electromyography showed denervation. The insurance company refused to pay damage claims. Partial recovery was achieved by pain medication and physiotherapy. Burner syndrome is an injury of physically active individuals of any age and may appear in the cervical and lumbar area. MRI may be normal due to the lack of complete nerve transection, but electromyography typically shows pathologic results.

IMT-2000에서의 무선 데이터 서비스 플랫폼

  • 서은주;이상민;김윤관
    • Information and Communications Magazine
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    • v.18 no.8
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    • pp.88-98
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    • 2001
  • 초기의 이동통신 서비스는 음성 위주였으나, 현재에 와서는 음성뿐만 아니라, 무선 인터넷, 게임, 위치, 동영상, 전자상거래, 모바일 오피스 등의 다양한 무선 인터넷 서비스에 대한 비중이 점점 더 커지고 있다. 이에 따라 다양한 서비스 아이디어를 신속히 제공하기 위한 개방형 무선 애플리케이션 플랫폼에 대한 요구가 커지자, 자바, BREW, stinger, SIM toolkit 등의 다양한 애플리케이션 플랫폼들이 등장하게 되었고, 비동기 표준 단체인 3GPP에서는 이들 현재 기술들을 바탕으로 한 모바일 애플리케이션 실행 환경인 MExE를 제안하고 있다. 본고에서는 무선 데이터 서비스 애플리케이션 플랫폼에 대한 이동통신 사업자의 입장과 각 요소 기술을 살펴보고자 한다.

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