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Foraminifera as an Indicator of Marine Pollution

  • Shin, Im-Chul;Yi, Hi-Il
    • The Korean Journal of Quaternary Research
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    • v.19 no.2
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    • pp.35-37
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    • 2005
  • Sediment samples from five stations at the Shihwa Lake sewage outfall, west coast of Korea, were collected to evaluate the effect of the outfall on benthic foraminifera. Heavy metal (Cu and Zn) polluted eastern part of the Shihwa Lake, adjacent to the Shihwa-Banwol Industrial Complexes, shows barren or nearly barren of benthic foraminifera, and the lowest number of species both at the core top and downcore. Excepting for the barren zone, pyritized benthic foraminifera abundantly occur both at the surface and downcore sediments in the western part of the Shihwa Lake, suggesting that foraminiferal disease by anoxic bacteria. Recent intrusion of pollutants from the Shihwa-Banwol Industrial Complexes and adjacent six major streams severely polluted the Shihwa Lake as shown by the low abundance (number/10 g) of benthic foraminifera, low number of A. beccarii, low species diversity, and absence of both Elphidium spp. and ostracodes at the surface sediments compared to the downcore. Except the barren zone, both pyritized and non-pyritized Ammonia beccarii occur dominantly in the surface sediments and downcore. Elphidium spp. (either pyritized or non-pyritized) do not occur in the surface sediments of whole stations. However, they occur from the entire downcore sediments except in the eastern part of Shihwa Lake. Arenaceous foraminifera do not inhabit in the heavily polluted areas as evidenced by the occurrence of relatively deep core depth (11-50 cm). Ostracodes occur at the downcore sediments, but they do not occur at the surface sediments. Ostracodes also do not occur at the heavily polluted areas in the eastern part of the Shihwa Lake both at the surface and downcore sediments, indicating that the abundance of ostracodes also can be used for a pollution indicator.

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Influence of Weak Ground Ahead of the Tunnel Face on 3D-displacement and Face Extrusion (막장전방의 연약층이 터널 3차원변위 및 막장 수평변위에 미치는 영향)

  • Jeon, Je-Sung
    • Journal of the Korean Geotechnical Society
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    • v.19 no.6
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    • pp.189-206
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    • 2003
  • During tunnel excavation in urban area a systematic monitoring is important for the purpose of determination of support type and quantity, as well as for the control of stability of both surface structures and the tunnel itself due to the frequently, and in many cases, abruptly changing ground condition. In Austria absolute displacement monitoring methods have replaced relative displacement measurements by geodetic methods to a large extent. Prompt detection of weak ground ahead of the tunnel face as well as better adjustment of excavation and support to the geotechnical conditions is possible with the help of the improved methods of data evaluation on sites. Deformation response of the ground to excavation starts ahead of the tunnel face, therefore, the deformation and state of the tunnel advance core is the key factor of the whole deformation process after excavation. In other words, the rigidity and state of the advance core play a determining role in the stability of both surface structures and the tunnel itself. This paper presents the results from detailed three-dimensional numerical studies, exploring vertical displacements, vector orientations and extrusions on tunnel face during the progressive advancement for the shallow tunnel in various geotechnical conditions.

A Study of Matrix Model for Core Quality Measurement based on the Structure and Function Diagnosis of IoT Networks (구조 및 기능 진단을 토대로 한 IoT네트워크 핵심품질 매트릭스 모델 연구)

  • Noh, SiChoon;Kim, Jeom Goo
    • Convergence Security Journal
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    • v.14 no.7
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    • pp.45-51
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    • 2014
  • The most important point in the QoS management system to ensure the quality of the IoT system design goal is quality measurement system and the quality evaluation system. This research study is a matrix model for the IoT based on key quality measures by diagnosis system structure and function. Developing for the quality metrics measured Internet of Things environment will provide the foundation for the Internet of Things quality measurement/analysis. IoT matrix system for quality evaluation is a method to describe the functional requirements and the quality requirements in a single unified table for quality estimation performed. Comprehensive functional requirements and quality requirements by assessing the association can improve the reliability and usability evaluation. When applying the proposed method IoT quality can be improved while reducing the QoS signaling, the processing, the basis for more efficient quality assurances as a whole.

Primitivism Expressed in Modern Fashion (현대복식에 나타난 원시주의 양식 -원시주의 미술의 조형성과의 비교를 중심으로-)

  • 하지수
    • Journal of the Korean Society of Costume
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    • v.21
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    • pp.193-206
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    • 1993
  • Recently in the post-modernism era ethnic look tropical look or ecological look has prevailed as an important theme of fashion all over the world. The main core of these themes is based on primitivism. The purpose of this study was first to com-prehend the internal meaning and the exteral form of primitivism in modern fashion second to compare the characteristics of primitivism in art with those in modern fashion as one of the phenomena in cultural consistency. For this purpose documentary studies about primitivism in social science and art were preceded as a framework of this study and then objective studies about primitivism in modern fashion and art were analyzed. Primi-tivism expressed in clothing since the 16th century was also historically traced. the results were as follows: 1. Primitivism in modern fashion was summarized by emotionality play ecology and aboriginality as well as was represented by ex-ternal forms of open form part-to-whole re-lation planar intergration rounded form and indeterminate form It was demonstrated that the external form of primitivism in art and fashion is quite similar and is an example of cultural consistency. So it is reaffirmed that fashion is the production of culture representing zeitgeist as a genre of art. 2, Modernism in the early 20th century brought the richness of materials through the de-velopment of the mechanical culture emphasizing rationality as well as functionalism, Fashion also has been influenced by this modern-ism so it has tended to express only the beauty which emphasizes the functional aspects of clothing and excludes the decorative characters. The primitivism in recent fashion is against the flow of modernism. In a word the pursuit for the regression to nature and the recovering of hu-manity is the core of the primitivism in modern fashion.

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Spatial and Temporal Variations of Foraminifers as an Indicator of marine Pollution

  • Shin, Im-Chul;Yi, Hi-Il
    • International Union of Geodesy and Geophysics Korean Journal of Geophysical Research
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    • v.26 no.1
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    • pp.59-73
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    • 1998
  • Sediment samples from five stations at the Shihwa Lake sewage outfall, west cost of Korea, were collected to evaluate the effect of the outfall on benthic foraminifers. Heavy metal (Cu and Zn) polluted the eastern part of the Shihwa Lake, adjacent to the Shihwa-Banwol Industrial Complexes, shows barren or nearly barren of benthic foraminifers, and the lowest number of species both at the core top and downcore. Excepting for the barren zone, pyritized benthic foraminifers abundantly occur both at the surface and downcore sediments in the western part of the Shihwa Lake, suggesting that foraminiferal disease by anoxic bacteria. Recent intrusion of pollutants form the Shihwa-Banwol Industrial Complexes and adjacent six major streams severely polluted the Shihwa Lake as shown by the low abundance (number/10 g) of benthic foraminifers, low number of Ammonia beccarii, low species diversity, and absence of both Elphidium spp. and ostracodes at the surface sediments compared of both downcore. Except the barren zone, both pyritized and non-pyritized Ammonia beccarii occur dominantly in the surface sediments and downcore. Elphidium spp. (either pyritized or non-phyritized) do not occur in the surface sediments of whole stations. However, they occur from the entire downcore sediments except in the eastern part of Shihwa Lake. Arenaceous foraminifers do not inhabit in the heavily polluted areas as evidenced by the occurrence of relatively deep core depth (11-15 cm). Ostracodes occur at the downcore sediments, but they do not occur at the surface sediments. Ostracodes also do not occur at the heavily polluted areas in the eastern part of the Shihwa Lake both at the surface and downcore sediments, indicating that the abundance of ostracodes also can be used for a pollution indicator.

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Analysis of Network Dynamics from the Roman-Fleuve, Togi (대하소설 토지 등장인물 네트워크의 동적 변화 분석)

  • Kim, Hak Yong
    • The Journal of the Korea Contents Association
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    • v.12 no.11
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    • pp.519-526
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    • 2012
  • Human-human interaction network derived from Roman-fleuve, Togi was constructed. The network has a scale free properties as if most social networks do. The Togi is excellent model system for analyzing network dynamics because it has various characters and complex their interactions. The novel is composed of well-separated 5 sections. I constructed 5 different sub-netwotks from each section. As employing k-core algorithm as a useful tool for obtaining a core network from the complex networks, it is possible to obtain hidden and valuable information from a complex network. As gradually extending one section to another one, I constructed 4 different extended networks. The final one is whole network from the Togi. These results provide new insight that is analyzed by network-based approaches for network dynamics from literature, Togi.

A Study on Social Worker's Experience in Community Practice -focused on community welfare centers- (사회복지사의 지역사회실천 경험에 관한 연구 : 사회복지관을 중심으로)

  • Choi, Ok-Chai
    • Korean Journal of Social Welfare
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    • v.52
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    • pp.301-324
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    • 2003
  • This study is designed to investigate social worker's experience in community practice at community welfare centers. Especially this study is conducted to identify the question; how do social workers experience community practice? For the study, data is collected from 11 social workers by depth interview. Using the Grounded theory, the data is analysed by open coding, axial coding, and selective coding. Finally the core category is become known that community practice is the piled up process of developmental experience throw willful efforts and various strategies under poor circumstances. The findings are as follows: (1) the experienced social workers seriously consider residents, community, social workers, and community welfare centers as the core participant in community practice. (2) the experienced community practitioners use various strategies on the whole process. (3) a system needs to be built to train community practitioners based on the cooperation of universities and community centers.

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A Development Technique of Core Architecture Data Model(CADM) for Defense Information Resource Management (국방 정보자원관리를 위한 핵심아키텍처데이터모델 개발 기법)

  • Choi, Nam-Yong;Jin, Jong-Hyeon;Song, Young-Jae
    • The KIPS Transactions:PartD
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    • v.11D no.3
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    • pp.683-690
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    • 2004
  • MND(Ministry of National Defense) has developed .nm AF(Ministry of National Defense Architecture Framework) to guarantee interoperability among defense information systems. Users can easily and consistently develop architecture products through MND AF. There is necessity for development if CADM(Core Architecture Data Model), which facilitate exchange, integration, and comparison for architecture data, to store architecture data from architecture products and reuse them. We developed CADM from defining entities and relationships that satisfy data requirement of each architecture product from MND AF. After we developed architecture products about MIMS(Military Intelligence Management System), and inserted these architecture data to CADM repository. we verified CADM entities and relationships through query. Through CABM which provides common data model for the whole my architectures, interoperability and integration among defense information systems ran be improved, and integrated defense information resources efficiently can be managed.

On the Application for Minimum Server Cores in Public Sector (공공부문 도입서버의 최소코어수 적용에 관한 고찰)

  • Lee, Tae-Hoon;Ra, Jong-Hei
    • Journal of Digital Convergence
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    • v.9 no.3
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    • pp.213-223
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    • 2011
  • Today, information resource management is key task in the data-centre as like as NCIA(National computing integration Agency of Korea). In IRM, the server's performance is one of the core elements, it must be importantly managed during whole of system life cycle. As first step of such management is in purchase phase, it is very important that the optimum specification is determined. The server's specification contains such as performance of core, criteria for performance verification, minimum cores, etc. There is constant controversy concerning the minimum cores. In this article, we present criteria for determination of the minimum cores that considered three aspects: (1) Costly aspect as TCO(Total Cost of Ownership, (2) Environmental aspect as Green IT (3) Technical aspect as RAS(Reliability, Availability, Serviceability) functionality. Finally, we propose scheme to ideally determinate the minimum cores.

PPARα-Target Gene Expression Requires TIS21/BTG2 Gene in Liver of the C57BL/6 Mice under Fasting Condition

  • Hong, Allen Eugene;Ryu, Min Sook;Kim, Seung Jun;Hwang, Seung Yong;Lim, In Kyoung
    • Molecules and Cells
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    • v.41 no.2
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    • pp.140-149
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    • 2018
  • The $TIS21^{/BTG2/PC3}$ gene belongs to the antiproliferative gene (APRO) family and exhibits tumor suppressive activity. However, here we report that TIS21 controls lipid metabolism, rather than cell proliferation, under fasting condition. Using microarray analysis, whole gene expression changes were investigated in liver of TIS21 knockout (TIS21-KO) mice after 20 h fasting and compared with wild type (WT). Peroxisome proliferator-activated receptor alpha ($PPAR{\alpha}$) target gene expression was almost absent in contrast to increased lipid synthesis in the TIS21-KO mice compared to WT mice. Immunohistochemistry with hematoxylin and eosin staining revealed that lipid deposition was focal in the TIS21-KO liver as opposed to the diffuse and homogeneous pattern in the WT liver after 24 h starvation. In addition, cathepsin E expression was over 10 times higher in the TIS21-KO liver than that in the WT, as opposed to the significant reduction of thioltransferase in both adult and fetal livers. At present, we cannot account for the role of cathepsin E. However, downregulation of glutaredoxin 2 thioltransferase expression might affect hypoxic damage in the TIS21-KO liver. We suggest that the $TIS21^{/BTG2}$ gene might be essential to maintain energy metabolism and reducing power in the liver under fasting condition.