• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.4
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• pp.456-466
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• 2021

The distribution and abundance of euphausiids were investigated in Korean waters in 2016. Euphausiids were sampled with a Bongo net. A CTD (Sea Bird Electronics 9 plus) measured the water temperature and salinity while sampling. Mean water temperature ranged from 4.2-31.0℃. The highest temperatures occur in September and lowest temperatures in February. The mean water salinity ranged from 27.9-34.8 psu, with the highest salinities in March and lowest in September. Euphausiid species in group W consisted of four species. Among the euphausiid species, Euphausia pacifica was the dominant species with peak densities in September. The E. pacifica from group W was distributed in the bottom cold water during summer when a thermocline was formed. Five euphausiid species occurred in group S. E. pacifica and E. nana were the dominant species. In group S, E. nana was located in the warm and saline Tsushima Warm Current, a branch of the influential Kuroshio Current. Five euphausiid species occurred in group E. E. pacifica and T. longipes were the dominant species. In group E, E. pacifica and T. longipes were distributed in the deep and cold waters, these species prefer low water temperatures and perform vertical migration. The distribution of euphausiids in Korean waters were highly influenced by mass water characteristics, such as temperature and salinity.

• Journal of Information Technology Services
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• v.1 no.1
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• pp.45-55
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• 2002

This paper suggests a new approach to IT project management based on a regular project meeting results to consider the recent project environment. The greater part of recent IT projects are related to e-business transformation. Transforming to e-business is a new problem very different from those they have been worked, in several point of views. Under e-business era, therefore any IT project is being implemented in more complex, dynamic and uncertain environment than traditional. That is, project leaders must consider more factors to control projects including resources, quality, risks, and technologies, and human resources. The project organizations and software corporations thus need to develop and establish new concepts or methodologies to manage e-business projects. In this point of view, an entropy model in this study is introduced for estimating and managing the uncertainty in project control using multi-attributes of project meeting. This paper proposes a new frame work based on entropy model using project meeting results to consider eIT project environment with a small pilot study.

• Plant Resources
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• v.8 no.1
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• pp.27-31
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• 2005

This study was conducted to produce effectively more leaves of Angelica acutiloba through year-round production system by using various mulching materials. Soil temperature by covering treatment was the highest in P.E.(Polyethylene Film) mulching and followed by rice straw mulching, especially showing highest temperature in Tr. PE(Transparent Polyethylene Film) from April through May. Water content of soil was higher in P.E. mulching than in non-mulching. Leaf and stem production of Angelica acutiloba through year-round production showed the highest in PE mulching also root production of Angelica acutiloba showed the highest in P.E. mulching. These results suggest that leaf and stem production of Angelica acutiloba can be maximized through P.E. mulching cultivation system.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.163-163
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• 2019

The rapidly growing global population increases the awareness of water, energy, and food security worldwide. The concept of Water, Energy, and Food nexus (hereafter, WEF nexus) has been widely introduced as a new resources management concept that integrate the water, energy, and food in a single management framework. Recently, WEF nexus analyzes not only the interconnections among the resources, but also considers the external factors (such as environment, climate change, policy, finance, etc) to enhance the resources sustainability by proper understanding of their relations. A nation-level resources management is quite complex task since multiple regions (e.g., watersheds, cities, and counties) with different characteristics are spatially interconnected and transfer the resources each other. This study proposes a multiple region WEF nexus simulation and transfer model. The model is equipped with three simulation modules, such as local nexus simulation module, regional resources transfer module, and optimal investment planning module. The model intends to determine an optimal capital investment plan (CIP), such as build-up of power plants, water/waste water treatment plants, farmland development and to determine W-E-F import/export decisions among areas. The objective is to maximize overall resources sustainability while minimize financial cost. For demonstration, the proposed model is applied to a semi-hypothetical study area with three different characterized cities. It is expected the model can be used as a decision support tool for a long-term resources management planning process.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.09a
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• pp.237-238
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• 2005

• Proceedings of the Plant Resources Society of Korea Conference
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• 2000.10b
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• pp.18-19
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• 2000

• Korean Journal of Plant Resources
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• v.5 no.1
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• pp.37-47
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• 1992

Many species of genus Entoloma were collecte from areas aat Mt. Naejang National Park, Mt. Sunun Provincial Park Mt. Manduck and adjacent areas. these Entoloa were idenified. According to the results, Entoloma subfarinaceum, E.viriincum, E.subgriseum, E.dolosum, E.squamiferum, E.intutum, E.violaceobrunnrum an E.seicatum were new to be Korea. Detail descriptions and Korean descriptions for them were made.

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.04a
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• pp.119-119
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• 2021

• Journal of the Korea Society of Computer and Information
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• v.22 no.8
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• pp.25-32
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• 2017

In this paper we propose a resource management method which enables to guarantee the quality of experience (QoE) for handover in the overlaid macro-femtocell networks. How to cope with the resource demand of handover calls is necessary to efficiently support the movement of mobile terminals, the QoE degradation or the load control. We attempt to satisfy the QoE requirements of users and maximize the capacity of the system at the same time. In order to achieve this goal, this scheme divides the shared resources into two part for the movement of MT and QoE degradation, and allocates those resources with the competition between four types of handovers. Simulation results show that our scheme provides better performances than the conventional one with respect to the outage probability, data transmission throughput.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.05a
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• pp.307-310
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• 2004

본 연구는 젖소 유방염의 환경성 원인체인 그람음성균의 분포와 E. coli의 항생제 내성 및 사람 식중독과의 연관성을 조사하기 위해 E. coli 혈청형에 대해 조사한 바, 2001년과 2003년 그람음성균의 주요 균 중 분포에서 많은 차이가 났으며, 2003년에는 E. coli가 31.8%로 가장 높은 것으로 나타났다. 체세포수에 따른 그람음성균의 분포율에서는 1백만 cells/ml 이하가 65.3%로 가장 높았으며, 체세포수 3백만 이상의 유즙에는 10.8%만이 분포하고 있는 것으로 나타났다. 또한, E. coli의 항생제 내성율 양상에서는 페니실린, 클록싸신, 세팔로틴등이 70%이상의 높은 내성율을 나타내었으며, E. coli 혈청형에서는 O23, O111, O157과 같은 주요 장관출혈성 E. coli 식중독균은 분리되지 않았다.