• Title/Summary/Keyword: 분리축

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The Process of Meaning Construction on Children's Happiness by Mothers with Young children (유아기 자녀를 둔 어머니의 자녀 행복 의미 구성 과정)

  • Choi, Eun A;Chung, Kai Sook
    • Korean Journal of Childcare and Education
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    • v.11 no.5
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    • pp.261-292
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    • 2015
  • The purpose of this study was to explain the process of meaning construction on children's happiness by mothers with young children. The study participants were 16 mothers with young children. The data were collected through the interviews which were conducted during 10 months from March, 2013 to December, 2013. The Data were analyzed according to a grounded theory methodology. The process of meaning construction on children's happiness by mothers included 4 stages, which are as follows. 'Following inseparated social desire and demands', 'Looking around my desire and children's happiness', 'Rearranging interlacing desire' and 'Going to find my children's happiness and my happiness'. And the stages were interacting mothers'time perspectives and diverse ecosystems. Based on the results, the study discussed the characters of interaction on time perspectives and parenting, and discussed influences of meaning construction on happiness.

The Behavior of Bearing Capacity for the Precast files (기성말뚝의 지지거동)

  • 박영호
    • Journal of the Korean Geotechnical Society
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    • v.16 no.1
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    • pp.107-116
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    • 2000
  • Dynamic and static load tests are conducted in four construction sites by using steel pipe piles(SPP) and concrete piles to compare differences of load bearing mechanism. Steel pipe piles are instrumented with electric strain gages and are subject to dynamic load tests during driving. The damage of strain gages attached is checked simultaneously. Static load test is also conducted on the same piles after two to seven days' elapse. Then load-settlement behavior and shaft and/or tip resistances are measured. As a result, the allowable bearing capacity calculated by the Davisson's offset method of CAPWAP analysis shows 2~33% larger than that of static load test. The average value of allowable bearing capacity of static load test is closer to the allowable capacity obtained at the safety factor of 2.5 applied on ultimate bearing capacity than to the one obtained from the Davisson's offset method. The analysis of strain gage readings shows that unit skin friction increases with depth. Furthermore, the friction mobilized around the 1~2m above the pile tip considerably contributes to the total shaft resistance.

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Increase in the Chlorophyll Contents by Over-expression of GmNAP1 Gene in Arabidopsis Plant (애기장대에서 GmNAP1의 과발현으로 인한 엽록소 함량 증가)

  • Park, Phun-Bum;Ahn, Chul-Hyun
    • Journal of Life Science
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    • v.20 no.10
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    • pp.1563-1568
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    • 2010
  • In the course of a research concerning the molecular mechanism of hypocotyl elongation that occurs during soybean seedling growth in darkness, we have generated a number of ESTs from a cDNA library prepared from the hypocotyls of dark-grown soybean seedlings. Comparison of the ESTs assigned a cDNA clone as a putative plastidic ATP-binding-cassette (ABC) protein homologue. The soybean GmNAP1 protein contains an N-terminal transit peptide which targets it into the chloroplast. The transcription level of the GmNAP1 gene was investigated under continuous red light, continuous far-red light, and complete darkness. The main function of this NAP1 protein is the transport of protoporphyrin IX which is the precursor of chlorophyll from the cytoplasm to the chloroplast. The GmNAP1 gene was transferred into the Arabidopsis under the CaMV 35S promoter. The chlorophyll level of this transgenic Arabidopsis plant was much higher than the chlorophyll level of the wild type Arabidopsis plant.

Robust Controller Design for Hydraulic Dipod Platform Based on 2-DOF H Controller Synthesis Framework (2자유도 H 제어기 종합 프레임웍에 기반한 유압식 Dipod 플랫폼의 강인제어기 설계)

  • Lee, Young-Hoon;Cho, Taik-Dong
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.37 no.6
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    • pp.805-814
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    • 2013
  • A hydraulic dipod platform is used for tracking and stabilizing an antenna system to designate a satellite on a moving vehicle. The 2-DOF controller is very well suited to this controller design object because it is more flexible than the 1-DOF controller when the design object is not only the consideration between stabilizing and tracking but also the trade-off between performance and robustness. The 2-DOF controller synthesis based on the $H_{\infty}$ framework is divided into two design procedures. In this hydraulic dipod platform example, the single-step method shows better performance whereas the two-step method shows better robustness. The difference between these two synthesis results is compared using the structural property of the interconnection system matrix.

A Node-disjoint Multipath Discovery Method by Local Route Discovery based on AODV (AODV기반의 지역경로탐색을 이용한 노드 비중첩 다중 경로 검색 기법)

  • Jin, Dong-Xue;Kim, Young-Rag;Kim, Chong-Gun
    • The KIPS Transactions:PartC
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    • v.14C no.1 s.111
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    • pp.87-94
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    • 2007
  • In mobile ad hoc networks the most popular on demand routing protocols are the Dynamic Source Routing (DSR) protocol and the Ad hoc On demand Distance Vector (AODV) routing protocol. These and other representative standard routing protocols are designed to find and maintain only a single path. Whenever there is a link break on the active route, source node has to invoke a route discovery process from the beginning and it causes a lot of overhead. Multipath routing protocols, which can alleviate these problems by establishing multiple alternative paths between a source and a destination, are widely studied. In this paper we propose a node disjoint multipath discovery technique based on AODV local route discovery. This technique can find and build completely separated node disjoint multi paths from a source to a destination as many as possible. It will make routing more robust and stable.

bovine leukosis (산재성 송아지 백혈병)

  • 임금기;장현철;강문일
    • Proceedings of the Korean Society of Veterinary Pathology Conference
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    • 2002.11a
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    • pp.150-150
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    • 2002
  • 40두 규모의 농장에서 사육된 홀스타인 종, 4개월령의 수컷 송아지에서 거세 후 고열, 식욕부진, 기침 등의 증상과 함께 전신 체표 림프절의 종대가 관찰되어 백혈병으로 잠정진단 하고 도태를 권유하였으나 축주가 치료를 원해 항생제와 해열제 및 기타 대증요법을 실시한 후 치료반응이 없어 폐사하여 부검을 실시하였다. 혈액 검사상 이상핵과 다형핵을 가진 다수의 림프구 및 백혈구, 호중구, 림프구 및 단핵구의 증가가 관찰되었다. 또한 백혈병 바이러스에 대한 분리 및 PCR 검사는 음성이었다. 부검 소견으로 체표 림프절, 슬관절 부위 및 비장과 간의 종대가 관찰되었으며 비장 중심에 12x11 cm의 종괴와 폐의 전엽부 유착 및 폐문, 종격동 림프절의 심한 종대가 관찰되었다. 견갑전 림프절을 비롯하여 대퇴골 전, 서혜, 폐문, 이하림프절 등 전신 림프절의 종대 및 소성의 연한 황색의 매끄러운 절단면을 보였다. 전지 관절의 종대와 관절강 내부는 증가된 농성 활액을 보였으며 고관절 강 내에 농성 활액의 증가와 공기 노출 후 젤리양 응고를 보였다. 심장은 장액성 위축과 함께 섬외막성 점상출혈이 나타났다. 병리조직학적 소견으로 비장은 지주 주변에 미성숙형의 세포들의 침윤이 보이며 유사분열상이 다수 관찰되었고 백색 수질에도 유사분열상의 증가와 함께 림프아구성 세포들이 다수 나타났다. 이들 주요한 비정상 세포들은 다형성의 큰 핵을 가진 다양한 림프아구의 형태를 지녔으며 핵내 공포가 인정되었다. 비장의 종괴 주변에는 증식된 섬유조직으로 둘러싸여 있었으며 미세농양 형성되어 있고, 일부 석회화가 진행된 부위도 있었다. 간소엽성 중심성 울혈과 가벼운 간세포내 지방침윤, 혈관 내 림프아구 형태의 세포와 소수의 호중구가 관찰되었다. 간삼조 주변에는 가볍거나 중등도의 단핵세포의 침윤이 미만성으로 관찰되었다. 폐에서는 중등도의 기관지 폐렴과 함께 일부는 무기폐가 관찰되었으며 폐포강과 세기관지내에는 염증성 삼출물이 다량 들어 있었다. 다병소성 미세농양과 함께 괴사가 있었고 실질의 섬유화가 진행되어 있었다. 또한 중등도의 간질성 신장염과 림프절은 지주 주변에 간극 내 비정상 림프구 세포의 형태는 비장의 그것과 유사하였으며 적수와 백수의 구이 힘들며 림프소절이 증가되어 있었다. 한 시야에서 유사분열상이 6-8 개로 그 지수가 매우 높으며 이와 더불어 큰 림프구가 전반에 걸쳐 침윤되어 있었다. 주변부 동(sinus)에는 많은 물질들이 침윤되어 있으며 렴프소절내 미만성의 성상현상이 관찰되었다. 회장은 파이어판내 심한 림프구 소실이 나타났다. 이상의 소견을 바탕으로 본 증례는 산재성 송아지 백혈병으로 진단되었다

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A Study on the Removal Method of Radioactive Corrosion Product using its Magnetic Property (방사성 부식생성물의 자기적 성질을 이용한 제거방법에 대한 연구)

  • 송민철;공태영;이건재
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.1 no.1
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    • pp.73-79
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    • 2003
  • In a pressurized water reactor, radioactive corrosion products (CRUD) in primary coolant system are one of the major sources for the occupational radiation exposure of the personnel in a nuclear power plant. Through the recent trend of long term fuel cycle in a nuclear power Plant, radioactive corrosion products deposited in reactor core for a long time are also the cause of Axial Offset Anomaly (AOA) having m effect on reactor power by the hideout of boron. CRUD consist primarily of magnetite, nickel ferrite, cobalt ferrite, and so on. They have the characteristic of strong magnetism. Therefore it is performed the conceptual design to develop the filter which removes the CRUD by magnetic field that is generated by an arrangement of permanent and electric magnets. Contrary to the conventional filter, the proposed filter does not interrupt the fluid flow, so there is little pressure drop and it can be used continuously. It is expected to be applied as one of the technologies for removal of the CRUB.

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Cloning and Expression of Phytochelatin Synthase 1 Gene from Rhizophora stylosa Exposed to Cadmium and Copper (카드뮴과 구리에 노출된 Rhizophora stylosa 의 phytochelatin synthase 1 유전자 클로닝 및 발현)

  • Lee, Gunsup;Hwang, Jinik;Park, Mirye;Chung, Youngjae;Lee, Taek-Kyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.6
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    • pp.3114-3119
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    • 2013
  • The mangrove ecosystems have the capacity to act as a sink of heavy metals entering aquatic ecosystems. Despite their potential exposure to metal contaminated sediments, mangroves appear to be highly tolerant to heavy metals. In this study, we cloned metal tolerance gene from mangrove plant. Using CTAB method, RNA were isolated from leaves and root tissue of Rhizophora stylosa habitated at Weno island in Micronesia Chuuk lagoon using CTAB method and phytochelatin synthase 1 (PCS1) gene was cloned using gene specific primers. Expression of PCS1 gene was increased 1.91 fold and 2.72 fold in mangrove propagules exposed to 100 ppb Cd and 10 ppb Cu, respectively. These results indicate that expression of PCS1 gene are promising tools for health assessment of mangrove ecosystem.

Muscle Fatigue Analysis by Median Frequency and Wavelet Transform During Lumbar Extension Exercises (요추신전운동 시 중앙주파수와 웨이브렛 변환을 이용한 근피로도 분석)

  • 장근;김영호
    • Journal of Biomedical Engineering Research
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    • v.25 no.5
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    • pp.377-382
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    • 2004
  • In the present study, thirteen healthy volunteers performed lumbar extension exercises at 48$^{\circ}$/s, loaded by 40, 50, 60kg(about 44, 55, 66% of maximum voluntary contraction). During the whole period of exercises, electromyographic(EMG) signal was measured in the erector spinae muscle in order to determine muscle fatigue. Using the wavelet transform, EMG signal was separated by various frequency ranges in the time-frequency domain, and muscle fatigue was analyzed, comparing with the results based on the median frequency(MDF). MDF shifted toward the lower frequency ranges with the muscle fatigue, showing a single characteristic frequency. On the other hand, wavelet transform of EMG signals resulted in increased power amplitude in lower frequency ranges(0-125Hz), and decreased power amplitude in higher frequency ranges(375-468Hz). This study reveals that the muscle fatigue during dynamic movement is explained better by wavelet analysis.

Applicability of Solidified Soil as a Filling Materials in the Drilling of the Bored-precast Pile (매입말뚝 시공시 현장토를 활용한 고화처리 충전재의 현장 적용성 평가)

  • Kim, Khi-Woong;Park, Jeong-Jun;Han, Byung-Kwon
    • Journal of the Korean Geosynthetics Society
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    • v.13 no.2
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    • pp.21-29
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    • 2014
  • The use of filling material based on cement paste is inefficient at field construction because it needs a lot of the charging mass. In addition, it has environmental problem according to the large amount of cement use because its strength is also larger than criterion. The excavated soil with stabilizer can be used as the filling materials when the bored pile is constructed. Therefore, this paper describes field application of solidified soil for economical efficiency and environment-friendly. The static axial load tests and the load-transfer measurements were performed to examine the axial resistant behavior of the piles. As results, the flowability, segregation and bleeding, and bond strength of filling materials was a good performance than that of the existing cement paste. But the skin friction of pile by PDA was slightly decreased than that of the existing cement paste. However, as pile filling materials, and in terms of economics and environment, the applicability of filling material is considered very effective.