• Title/Summary/Keyword: MOM

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Enhanced IP Multicast Provisioning Scheme Based on HA Routing (HA 라우팅 기반의 개선된 멀티캐스트 제공 방안)

  • 김인경;하정락;현은희;김상하
    • Proceedings of the Korean Information Science Society Conference
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    • 2001.10c
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    • pp.433-435
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    • 2001
  • IETF Mobile IP는 이동 컴퓨팅 환경에서 IP 멀티캐스트를 지원하기 위한 메커니즘으로 HA 기반 라우팅과 FA 기반 라우팅을 간략히 언급하고 있다. FA 기반 라우팅의 경우, 단말기 이동 시 멀티캐스트 트리를 재구성하는 오버헤드가 존재하는 단점이 있다. 반면. HA 기반 라우팅의 경우, 단말기 이동시 경로 최적화가 이루어지지 않는 단점에도 불구하고. 멀티캐스트 트리 수정에 대한 오버헤드가 존재하지 않은 장점이 있다. 이러한 장점은 망의 안정성을 놓일 수 있기 때문에 많은 연구에서 HA 기반 라우팅을 채택하고 있다. 하지만, 기존의 HA 기반 라우팅 방법에서 가장 큰 장애 요소는 터널링 집중화 현상이며, 이를 해결하기 위해 Mobile Multicast (MOM) 등에서 정성적인 방법을 제안하고 있지만, 구체적인 프로토콜이 없으며 모든 HA들이 관여하는 복잡도로 인해 실제로 망에 배치되는 데 한계성을 가진다. 본 논문에서는 현재의 Mobile IP 메시지의 간단한 확장과 FA메 멀티캐스팅을 위한 기능을 첨가하여. 터널링 집중화 현상을 해결하는 프로토콜을 제안하고자 한다. 제안되는 프로토콜은 현재의 모든 IP 멀티캐스트를 수용하고, Mobile IP와의 호환성을 유지한다.

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An analysis of Center-Fed Planar Dipole Antenna by method of moments (모멘트 방법에 의한 중앙급전식 평판 다이폴 안테나의 해석)

  • Yang, Sang-Yong;Lee, Tack-Kyung;Ra, Jung-Woong;Lee, Soo-Young
    • Proceedings of the KIEE Conference
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    • 1989.07a
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    • pp.647-650
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    • 1989
  • The driving-point impedance of the center-fed planar dipole antenna is obtained using the method of moments (MOM). For the thin dipole antenna, our numerical result is compared with that of the inverse method by D. R. Rhodes as well as the known solutions of equivalent wire antenna. For the frequencies of L-band and S-band, the driving-point impedances of the thick planar dipole antennas are measured by experiment and compared with the numerical results.

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A Study on Fashion Bag in Contemporary Fashion Culture (현대 패션 문화에 나타난 패션 백(Fashion Bag) 연구)

  • Chung, So-Young;Kim, Ji-Young
    • The Research Journal of the Costume Culture
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    • v.14 no.2
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    • pp.334-351
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    • 2006
  • The purpose of study is to examine fashion bags reflected women's changing lifestyle, their needs and vogue in modern environment since 20th century. Today fashion bags can be divided into practical bag, evening bag, luxury bag and utility bag. Practical bag is a type of tote which is perfect for working mom or women carrying lots of things on a daily basis. Evening bag is a symbol of femininity in respect for its handmade artistry and impracticality by its small size. Luxury bag embodies human desire for high quality and being part of prestige of luxury brand regardless of its cost. Utilitarian bag was coming from military or sports gear and are popular among young generation armed with mobile computing or crazy about popular music and all kinds of sports. In contemporary fashion culture, fashion bags play an important roles on balancing women's social and domestic life as functional and decorative accessory.

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The Effects of Vojta's Treatment on Respiratory Muscle Activity and Phonation in children with Spastic Cerebral Palsy (보이타 치료중재가 뇌성마비아동의 근활성화 및 발성에 미치는 효과)

  • Joo, Jichan;Lee, Hyojeong
    • Journal of The Korean Society of Integrative Medicine
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    • v.1 no.3
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    • pp.37-49
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    • 2013
  • Purpose : The purpose of this study was to evaluate the influence of Respiratory Capacity by Vojta's treatment in children with spastic cerebral palsy. Method : The subjects of this study, children diagnosed with spastic cerebral palsy, 12 patients were picked up, who were agreed with this research and were having hospital care for 4weeks at MH and PR medical centers. Result : In comparison of Respiratory muscle activity and Phonation capacity were significant in the group(p<.01) and MPT and Rectus abd(Rt) were significantly correlated in the pre test and SMR and Ex/oblique (Lt) were significantly correlated in the post test. Conclusion : Therefore, the Vojta's treatment is useful to improve the Respiratory muscle activity and Phonation capacity in children with spastic cerebral palsy.

Development of 3-D Scientific Visualization Tool of Atmospheric-Ocean-Astronomical Numerical Model Results (대기-해양-천문 수치모델 결과의 3차원 과학적 가시화 도구 개발)

  • Yuk, Jin-Hee;Kang, Ji-Sun;Joh, Minsu
    • Proceedings of the Korea Contents Association Conference
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    • 2017.05a
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    • pp.293-294
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    • 2017
  • 대기-해양-천문 수치 모델은 주로 3차원 모델이고, 3차원적 해석을 위해서는 사용자가 쉽게 접근하고 사용할 수 있는 3차원 과학적 가시화 도구가 필요하다. 이러한 요구에 대응하기 위하여 무료/오픈소스 기반의 3차원 과학적 가시화 도구인 VAPOR가 사용자 친화적인 방향으로 개발되고 있다. VAPOR는 대기모델 WRF, CAM, GRIMs, 해양모델 MOM4, POP, ROMS의 직접 가시화가 가능하며, VAPOR 자료 형식 변환 과정을 통하여 천문 분야 모델(RAMSES) 가시화도 가능하다. 매년 개발을 통하여, VAPOR는 사용자가 많이 사용하는 일반적인 2, 3차원 표출 기능과 단순 통계 기능을 제공하게 되었으며, 향후 다중 모델 동시 표출 기능도 제공할 계획이다.

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Ultrastructure of Micromonospora rosaria Protoplasts and Their Fusion (Micromonospora rosaria에서 유래된 protoplast의 미세구조 및 fusion에 관한 전자현미경적 연구)

  • Seo, Y.H.;Kim, C.S.;Kim, K.S.
    • Applied Microscopy
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    • v.13 no.1
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    • pp.31-40
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    • 1983
  • Ultrathin sections of intact mycelia, released protoplast and fused protoplast of Micromonospora rosaria were observed by electron microscopy Intact mycelia showed a typical gram-positive bacterial cell wall structure and mesosomes. Released protoplasts had no cell wall components and fibrous nuclear region was distinguished from cytoplsmic region clearly. Protoplasts which treated with sucrose supplemented buffer were stable. But those treated with buffer without sucrose were extensively damaged, forming mom braneous vesicles. It was surmised that those vesicles originated from the damaged cytoplasmic membrane. High frequency of fusion was achieved by 50%(w/v). polyethylene-glycol 1,000 Fusion bodies in different stage of fusion were observed. Cell membrane barrier was stepwise relieved.

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Scattering characteristic analysis of Fresnel zone plate lens using TLM (TLM법을 이용한 프레넬 존 플레이트 렌즈 산란특성 해석)

  • 김태용
    • Proceedings of the Korea Society for Simulation Conference
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    • 2003.06a
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    • pp.15-18
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    • 2003
  • Most numerical techniques such as FEM, BEM, and MOM are able to analize electromagnetic scattering problems from arbitrary shapes. Although these methods could be applied to compute electromagnetic scattering problems in frequency domain, it was limited for electrodynamic problem in time domain. In this paper, electromagnetic scattering problem from Fresnel zone plate lens are considered. Some numerical results computed by TLM are compared with Kirchhoff's approximation and PO method.

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Analysis of Electromagnetically cCoupled Microstrip Transverse Dipole using Finite Difference Time Domain (FDTD) Method (시간영역 유한차분법을 이용한 전자기결합 마이크로스트립 수직다이폴의 해석)

  • 손영수;윤현보
    • The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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    • v.5 no.4
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    • pp.30-39
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    • 1994
  • The resonant frequency, reflection cofficient and input impedance of a microstrip transverse dipole coupled electromagnetically are calculated using Finite Difference Time Domain(FDTD) method, and the evolution of gaussian pulse and spatial distribution of electromagnetic field components in the computation domain is represented graphically. Also, we confirmed the computation results show good agreement with the results of Method of Moment(MOM) and experiment[8] reported in the literature.

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Experience of Health Teachers on School Health Practice (보건교사의 학교보건업무수행의 경험)

  • Yang, Kyoung Hee;Kong, Eun Suk;Park, Keum Sook
    • Journal of the Korean Institute of Oriental Medical Informatics
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    • v.22 no.1
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    • pp.1-12
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    • 2016
  • Purpose: This study was conducted to investigate the experience of health teachers on school health practice of elementary and middle high school Methods: The subjects were 15 health teachers who work in elementary and middle high school in J province. The data were collected using focused group interview and unstructured questionnaire. The contents of the interview were recorded and tranferred to computer database. The data were analyzed using Colaizzi's qualitative study methode. Results: There were 5 categoies of the themes. They were 'feeling of existence as a student's mom', 'difficults of counselling', 'difficults of goal achievement in school health practice' 'meaningfullness", and 'need of the ability improvement'. Conclusion: In order to improve the quality of the health teacher's school health practice, work overloading of the school health teachers should be decreased, their counselling skills should be trained, and they should be supported by the school and school members.

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Mother's Experience of Caring Child with a Severe Atopic Dermatitis (중증 아토피 피부염 환아를 돌보는 어머니의 경험)

  • Chang, Eun-Young;Chung, Seung-Won;Lee, Ja-Hyung
    • Korean Parent-Child Health Journal
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    • v.9 no.1
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    • pp.17-32
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    • 2006
  • The purpose of this study was to understand mother's experience of caring child with a severe atopic dermatitis. Twelve participants were selected and collected on their caring difficulties using in-depth interview. Data were analyzed according to the method of Colaizzi. Significant statements were extracted from the data. From the significant statement, 18 clusters of themes and 7 categories were emerged. Eighteen cluster of themes formed 7 categories : Thinking of atopic dermatitis during 24 hour, Mom would cure you, You are atopic, I'm depressive, I need 12 or more bodies to take care of him/her, Great conversion of daily life, From a bitterness to a frailness, In peace with an atopic dermatitis. In this study, it was implicated that mothers were suffered from caring children with an atopic dermatitis and nurses need to have more interests in the maternal stress and their quality of life as well as provision of information.

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