• Korean Journal of Fisheries and Aquatic Sciences
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• v.9 no.4
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• pp.293-298
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• 1976

1) The decrease in strength of netting twines at the twisted joint is regarded to be due mainly to tile frictional force between plied yarns, but tile rate of decresae is within $5\%$ in filament twines and 5 to $10\%$ in spun twines. 2) The variation of the twisted joint strength with the angle between the two adjacent bars draws a parabola flaying the minimum value at tile angle of $90^{\circ}$. The minimum value was revealed as about $90\%$ of the strength at the angle of $0^{\circ}$ in wet spun twiness, but regarded to hi negligibly small filament twines. 3) The knot strength is about $30{\pm}5\%$of the twisted joint strength.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.110-111
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• 2001

퉁퉁마디(Salicornia herbacea, glasswort)는 명아주科에 속하는 식물로 서해안과 울릉도의 염수가 닿는 바닷가에서 자라는 일년초(一年草)로서 우리말로 퉁퉁하고 마디마디 튀어나온 풀이라고 하여 퉁퉁마디라고 부른다. 퉁퉁마디는 우리나라에서 대중에게 널리 알려지거나 식용하고 있는 식물은 아니지만, 유럽에서는 어린줄기를 샐러드로 만들어 먹기도 하고 일본에서는 천연기념물로 지정되어 있다고 한다. (중략)

• Journal of the Korea institute for structural maintenance and inspection
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• v.18 no.2
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• pp.38-46
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• 2014

Effects of various parameters on bond property between reinforcing bar and concrete are investigated in many researchers, and various study is on going to improve the bond strength. Properties of interface between reinforcement and concrete is important role in bond property. This study analyzed the interfacial bond mechanism between deformed bar and concrete by finite element analysis (FEA) to evaluate the effect of rib shape. The FEA model in this study is simplified 2D plane stress model. The variables of analysis are selected by rib angle, rib height, rib spacing and relative rib area. From the results of analysis, reinforcing bars with rib angle $30{\sim}60^{\circ}$ showed better bond strength than the others. Bond strength ratio following to the rib height is proportionally increased up to the $0.12d_b$, but rib spacing has little effect on bond strength. The results also indicated that relative rib area can be efficiently represented the properties of deformed shape in reinforcing bars, and zigzagged rib height shape showed excellent bond strength increase.

• Journal of the Korea Concrete Institute
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• v.13 no.3
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• pp.244-250
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• 2001

One of the reasons for brittle failure in reinforced concrete structures subjected to severe earthquake is due to large slip between reinforcing steel and concrete. This study aims to evaluate effects of deformation patterns of ribbed reinforcing bars on bond under cyclic loading. Bond test specimens were constructed with machined bars to test the newly developed reinforcing bars with high relative rib areas. The degree of confinement is also another key parameter in this bond test. From the test results under monotonic and cyclic loading, bond strength and stiffness were evaluated. Bond strength and bond stiffness increase as relative rib areas under cyclic loading for specimens highly confined by transverse reinforcement. The increase rates of the bond performance under cyclic loading are larger than those of specimens under monotonic loading. The developed bars with high relative rib areas will contribute for better bond performance for reinforced concrete structures subjected to severe seismic loadings.

• The Korean Journal of Zoology
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• v.36 no.1
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• pp.6-13
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• 1993

연두금파리 유충의 뇌와 복신경절에 분포하는 세로토닌 면역반응성 세포를 면역조직화학적 방법을 이용하여 동정하였다. 세로토인세포는 뇌에 28개, 제1식도하신경절의 첫째마디에 6개, 둘째마디에 10개 그리고 세째마디에 6개가 각각 존재하였다. 그리고 앞가슴신경절에 6개, 가운데가슴신경절에 4개 그리고 됫가슴신경절에 4개가 각각 위치하였다. 또한 복부신경절에서는 첫새 마디부터 일곱째 마디까지 각각 4개가 존재하였고 마지막마디인 여덟째마디에서는 단지 두개의 세포만이 관찰되었다. 결국 연두금파리 유충의 중추신경계에는 모두 94개의 세로토닌 면역반응성 세포들이 분포하였다. 이들 세포로부터 뻗어나온 축색들은 뉴로파일내에서 분지하거나 횡연합섬유를 이루었다.

• Animal Systematics, Evolution and Diversity
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• v.13 no.1
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• pp.45-52
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• 1997

계통분류학의 분지(cladistics)의 원리와 방법들을 한국산 늑대거미과(Lycosidae)의 7 속들 사이의 계통분류학적 관계를 분석하는데 적용시켰다. 형질( ∼)의 형태적, 생리적 그리고 생태적 특성에 기초를 둔 분석으로부터 분지도(cladogram) Fig. 1, 2, 3을 만들었다. 한국산 늑대거미과는 아로페늑대거미속, 논늑대거미속, 짧은마디늑대거미속, 긴마디늑대거미 속, 부이표늑대거미속, 곤봉표늑대거미속, 마른마디늑대거미속의 7속으로 나누어진다. 필자는 그간의 국내외 여러학자들이 연구한 사항을 정리하여 지금까지 짧은마디 늑대거미아과에 속 해있는 논늑대거미속과 곤봉표늑대거미속을 이 아과에서 분리하여 논늑대거미아과를 새로 설정하였다. 이로써 한국산 늑대거미과에는 부이표늑대거미아과, 긴마디늑대거미아과, 짧은 마디늑대거미아과, 논늑대거미아과의 4개 아과로 새로이 정리하였다.

• Proceedings of the KSLP Conference
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• 1996.11a
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• pp.94-94
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• 1996

미주신경의 마디신경절내에 존재하는 신경세포는 경부, 흉강 및 복강의 감각신경을 지배하는 것으로 알려져 있으며 이와 관련된 SP, CGRP 등의 신경펩디드의 분포에 관하여 많은 보고가 이루어졌다. Vasoactive Intestinal Peptide(VIP)는 혈관, 평활근, 분비선 주위에 분포하는 부교감신경세포의 전달물질로서 후두의 자율신경계의 조절에 중요한 역할을 하고 있다 이러한 VIP지배신경의 기원에 관해서는 미주신경이나 후두신경, 그리고 일부 후두 구조내에 존재하는 부신경절(Paraganglia)에서 기원한 후 신경절 부교감신경으로 알려져 있는데, 즉 미주신경의 마디신경절은 단지 감각신경의 기원이 되는 신경세포 집합체로 마디신경절과 자율신경계의 상관관계에 대한 연구는 극히 드문 실정이다. 그러나 일부 보고에서 성문하부의 점막상피에서 SP나 CGRP외에도 VIP 양성세포가 발견됨으로써 일반적으로 자율신경계 세포로 알려진 VIP 양성세포의 기원과 기능은 더 규명되어야 할 부분의 하나로 사료된다 금번 저자는 고양이의 마디신경절에 대하여 면역 조직화학적 방법을 통한 VIP양성 세포의 출현여부를 관찰함으로써 마디신경절과 자율신경계와의 상관관계를 알아보고자 하였다.

• Journal of Korean Library and Information Science Society
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• v.45 no.2
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• pp.283-309
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• 2014

A rhetorical segment in traditional abstract displaying a sign of particular function is frequently referred to as a move. One of the most common moves is the Background, Aim, Method, Results, and Conclusion (BAMRC). The objective of this paper is to investigate the move patterns of research article abstracts in the field of social sciences based on BAMRC moves. Using the Scopus bibliographic database, a total of 467 abstracts from 298 research journals in the field of social sciences were analyzed. The result showed a wide range of move patterns. The implication of the result of this study suggests the existing traditional abstracts in social sciences might not be sufficiently "informative" due to missing moves and due to various move orders. To this end, automatically mapping moves in traditional abstracts to sub-headings in structured abstracts can be a more challenging task, requiring additional procedures to resolve these types of compatibility issues. Future studies can compare this study's result to other fields or disciplines within social sciences in order to find a more precise nature of abstracts in the field of social sciences.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.1
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• pp.198-201
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• 2015

The prompt and accurate location determination of the nodes of the wireless indoor shipboard networks is crucial to forming the stable wireless shipboard sensor networks. To this end in this paper it can be achieved through the measurement of the bi-directional channel qualities among the nodes after the locations of the sensor nodes temporarily placed. For the 1st stage the piconet-type sensor networks are considered to measure the channel qualities between a specific node and the cluster node which is the master node. After finishing the 1st stage measurement the nodes needing the relay nodes are selected and the measurement action goes into the 2nd stage. In the 2nd stage the measurement between a candidate relay node and the node needing a relay node starts to begin. After the 2nd stage the relay nodes to connect to the cluster node are fixed and the information delivery paths between a node and the cluster head are established. In this paper the measurement results in the realistic environment are gathered and analysed to show that the measurement procedure can be applied in the wireless indoor shipboard networks.

• Applied Microscopy
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• v.37 no.2
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• pp.73-82
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• 2007

The antennae of millipedes have a prominent function in detecting various types of environmental stimuli. The structural modification of the antennae is closely associated with the degree of sense recognition. Here we study functional morphology of the antennae of the millipede Cawjeekelia pyongana using field emission scanning electron microscope (FESEM). The antennae generally include eight segments, called articles. On the surface of the antennae, there are a variety of sensory receptors which include olfactory and mechanical receptors. We could identify four different types of antennal sensory organs in C. pyongana as follows: apical cone (Ac), trichoid sensilla (Ts), chaetiform sensilla (Cs) and basiconic sensilla (Bs). The most prominent of which is four APs at the 8th article. Both of the Is and the Cs are abundantly observed almost all of the antennal segments. They are long and strong bristles with longitudinal grooves acuminating toward the tip. The Bs is further divided into three subtypes: large basiconic sensilla $(Bs_1)$, small basiconic sensilla $(Bs_2)$ and spiniform basiconic sensilla $(Bs_3)$. The $Bs_1$ is located at the 5th and 6th articles, while the $Bs_2$ and $Bs_3$ can be seen at the 5th and at the 7th article, respectively.