• Journal of Environmental Policy
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• v.8 no.4
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• pp.1-24
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• 2009

As commercial use of genetic resources increases in modern society, calls for fair and equitable sharing of the benefits thereof have become increasingly prominent, particularly from developing countries. As a result, negotiations have been ongoing for the "International Regime on Access and Benefit Sharing (ABS)" for genetic resources as a successor to the non-binding Bonn Guideline. 2010 has been set as the target date for the Agreement. As South Korea is more likely to be a user country of genetic resources, it will be necessary for it to take part in the negotiating process and contribute to creating the International Regime on ABS, to ensure both appropriate access to genetic resources and fair and equitable sharing of the benefits arising there from. To develop appropriate response strategies for South Korea, it is critical not only to closely examine the negotiations within the framework of the CBD but also to engage in discussions within thescope of related international organizations and domestic legislation. To achieve this goal, it is imperative for South Korea to form a comprehensive Government Response System, composed of relevant governmental bodies including the Ministry of Foreign Affairs and Trade, and the Ministry of Environment, etc.

• Animal Systematics, Evolution and Diversity
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• no.nspc5
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• pp.29-46
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• 2005

As a commemorative joint survey for the 20th anniversary of the Korean Society of Systematic Zoology, molluscan fauna of Jindo Island was investigated from the materials collected from 3 localities of Jindo Island from 29th to 30th of June, 2004. A total of 77 species of 37 families were identified. Among them, 26 species of 18 families are reported for the first time in this area, including Onchidella kurodai (Taki, 1935) that is new to Korean fauna. For O. kurodai, external morphologies were described in detail with illustrations. Combining the present data with those of the previous works revealed that a total of 115 species from 43 families have been recorded in Jindo Island and its adjacent areas thus far. From a biogeographic point of view, some gastropod species (Bittium craticulatum, Mocroschisma dilatatum, Cantharidus japonicus, C. callichroa, Homalopoma sangarense, and Crepidula onyx) encountered from Jindo Island were the species previously recorded in the southern and/or eastern offshores of Korean peninsula, including Jeju Island (Choe, 1992). Along with the fact that Jindo Island contains a large number of molluscan species ranging over the Yellow Sea coast, this finding is another line of evidence supporting the Kim and Kwon (1983)'s idea that this area is an overtopping zone of marine organisms which dwell in both the Yellow sea and southern part of Korean sea waters. No comprehensive faunistic survey was not made in the present study. We expect that further supplementary study would generate more biogeographic and faunistic knowledges than what we understand through the present study.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.274-276
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• 2003

신경과학이 발전함에 따라 기억현상의 분자생물학적, 세포생물학적 메커니즘이 밝혀지고 있으며, 신경계의 특징을 계산학적 측면으로 응용한 신경망 분야는 상당한 연구성과가 축적되어 하나의 학문 분야로까지 자리매김하고 있다. 면역학이 발전함에 따라 연역현상의 분자생물학적, 세포생물학적 메커니즘이 밝혀지고 있으며, 특히 연역기억현상의 산물인 항체를 이용한 설러 가지 생물학적 실험 방법이 고안되어 사용되고 있는 한편, 연역 현상의 특징을 계산학적 측면으로 응용하려는 다양한 시도가 근래 이루어지고 있다. 본고에서는 항원과 항체 분자를 이용한 면역생물학적 실험 방범을 적용하여 문자, 인식 문제를 해결하는 분자 면역 컴퓨팅의 개념을 도입하고, 이 개념을 도입하여 숫자를 인식하는 문제에 적용하는 사례를 제시하였다.

• Journal of Korean Society of Environmental Engineers
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• v.37 no.12
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• pp.689-695
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• 2015

A biofilm filtration for the removal of gaseous pollutants has been recognized as a process with a complex interaction between the gas flow characteristics and the process operating variables. This study aims to develop an one dimensional dynamic numerical model which can be utilized as a tool for the analysis of biofilm filtration process operated in plug flow mode. Since, in a plug flow system, minor environmental changes in a gaseous unit process cause a drastic change in reaction and the interaction between the pollutants is an influencing factor, plug flow system was generalized in developing the model. For facilitation of the model development, dispersion was simplified based on the principles of material balance. Several reactions such as competition, escalation, and control between the pollutants were included in the model. The applicability of the developed model was evaluated by taking the calibration and verification steps on the experimental data performed for the removal of BTX at both low and high flow concentration. The model demonstrated a correlation coefficient ($R^2$) greater than 0.79 under all the experimental conditions except for the case of toluene at high flow condition, which suggested that this model could be used for the generalized gaseous biofilm plug flow filtration system. In addition, this model could be a useful tool in analyzing the design parameters and evaluating process efficiency of the experiments with substantial amount of complexity and diversity.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10a
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• pp.53-58
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• 2006

MicroRNA (miRNA)는 약 22 nt의 작은 RNA 조각으로 이루어져 있으며 stem-loop 구조의 precursor 형태에서 최종적으로 만들어 진다. miRNA는 mRNA의 3‘UTR에 상보적으로 결합하여 유전자의 발현을 억제하거나 mRNA의 분해를 촉진한다. miRNA를 동정하기 위한 실험적인 방법은 조직 특이적인 발현, 적은 발현양 때문에 방법상 한계를 가지고 있다. 이러한 한계는 컴퓨터를 이용한 방법으로 어느 정도 해결될 수 있다. 하지만 miRNA의 서열상의 낮은 보존성은 homology를 기반으로 한 예측을 어렵게 한다. 또한 기계학습 방법인 support vector machine (SVM) 이나 naive bayes가 적용되었지만, 생물학적인 의미를 해석할 수 있는 generative model을 제시해 주지 못했다. 본 연구에서는 우수한 miRNA 예측을 보일 뿐만 아니라 학습된 모델로부터 생물학적인 지식을 얻을 수 있는 Bayesian network을 적용한다. 이를 위해서는 생물학적으로 의미 있는 특질들의 선택이 중요하다. 여기서는 position weighted matrix (PWM)과 Markov chain probability (MCP), Loop 크기, Bulge 수, spectrum, free energy profile 등을 특질로서 선택한 후 Information gain의 특질 선택법을 통해 예측에 기여도가 높은 특질 25개 와 27개를 최종적으로 선택하였다. 이로부터 Bayesian network을 학습한 후 miRNA의 예측 성능을 10 fold cross-validation으로 확인하였다. 그 결과 pre-/mature miRNA 각 각에 대한 예측 accuracy가 99.99% 100.00%를 보여, SVM이나 naive bayes 방법보다 높은 결과를 보였으며, 학습된 Bayesian network으로부터 이전 연구 결과와 일치하는 pre-miRNA 상의 의존관계를 분석할 수 있었다.

• Journal of Bio-Environment Control
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• v.8 no.1
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• pp.36-41
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• 1999

This study was carried out to investigate the effect of root zone restriction on yield and quality of muskmelon. Three cultivation methods, isolated bench, root zone restriction sheet(RZR sheet) and conventional soil culture, were compared from April 19th to July 17th. Soil temperature was higher at isolated bench and the growth of melon was accelerated at isolated bench compared to soil culture or RZR sheet. Fruit size was bigger in order of soil culture, isolated bench and RZR sheet, while sugar content and net shape were greatest at isolated bench, and the percentage of wilted plant was 3.3% at isolated bench, 25.0% at RZR sheet and 26.7% at soil culture. Therefore, marketable yield was higher at isolated bench compared to conventional soil culture.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.24-24
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• 2019

DMZ 및 접경지역은 지난 60여 년간 인간의 간섭을 받지 않아 세계적으로 우수한 생태계의 보고이며, 백두대간, 도서연안과 함께 한반도 3대 핵심생태축의 하나로서 한반도생태계보전을 위한 가장 중요한 지역이다. 이러한 DMZ 및 접경지역에 대하여 국내적 중요성 인식 제고뿐만 아니라 국제적으로도 중요생물다양성지역(KBAs)으로서의 가치인식을 위해 IUCN에서 제시하는 평가기준을 검토하고 이의 기준을 적용하여 DMZ의 생물다양성에 대한 국제적 가치정도 판단 및 중요생물다양성지역(KBAs)으로서의 보전방안을 수립하고자 한다. 첫째, DMZ 일대를 대상으로 서식하는 자생식물의 분포지역을 파악하여 DMZ 및 접경지역의 식물상은 18과 139속 367종 1아종 44변종 10품종 422분류군으로, 총 138과 613속 1,517종 8아종 217변종 58품종으로 총 1,800분류군으로 확인되었다. 본 연구대상지의 동부지역에서 가장 많은 1,482분류군, 중부지역은 1,225분류군, 서부지역은 1,080분류군으로 가장 적은수의 식물이 확인되었다. 둘째, DMZ 및 접경지역을 대상으로 객관적이고 정량적인 방법을 통한 DMZ 및 접경지역의 중요생물다양성지역(KBAs) 지정기준을 적용하여 개느삼, 금강초롱, 모데미풀 3종을 중요생물다양성지역(KBAs) 후보종으로 선정하였다. 후보종별로 분포예측 결과 전체 면적 $5,270.5km^2$ 중요생물다양성지역(KBAs) 지정을 제안하였다. 셋째, 지정기준을 통하여 선정된 DMZ 및 접경지역에 서식하는 주요 식물에 대한 국제적 가치를 판단하여 우리나라 상황에 맞는 중요생물다양성지역(KBAs)을 적용함으로써 효과적인 관리방안으로 투명하고 체계화된 국제적 기준으로 해당 지역 내의 생물종 다양성을 지속가능하게 보호하기 위한 구체적인 방향 설정 및 관리를 위한 노력이 이루어질 수 있도록 유도 할 수 있다. 수집된 자료를 통하여 중요생물다양성지역(KBAs)에 적합한 종을 중심으로 보호구역을 지정하고 국내적으로 중요한 지역적 멸종위기종에 대한 적용을 추가적으로 진행하여 식물다양성이 중요한 지역의 보호를 위한 우선순위 및 구체적 접근계획을 수립할 수 있을 것으로 판단된다. 국가적인 차원에서 DMZ 및 접경지역의 지속적인 조사를 통하여 중요생물다양성지역(KBAs)기준 적용에 필요한 기초자료를 충분히 수집하고 국내 환경에 부합하는 중요생물다양성지역(KBAs)기준 적용을 통하여 꾸준히 재평가하여 후속연구의 발판을 마련하여야 한다.

• Journal of KIISE:Software and Applications
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• v.30 no.3_4
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• pp.379-387
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• 2003

A lot of microbial genome projects have been completed to pour the enormous amount of genomic sequence data. In this context. the problem of identifying promoters in genomic DNA sequences by computational methods has attracted considerable research attention in recent years. In this paper, we propose a new model of prokaryotic core promoter region including the -10 region and transcription initiation site, that is Dependency-Reflecting Decomposition Model (DRDM), which captures the most significant biological dependencies between positions (allowing for non-adjacent as well as adjacent dependencies). DRDM showed a good result of performance test and it will be employed effectively in predicting promoters in long microbial genomic Contigs.

• 한국해양학회지
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• v.21 no.3
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• pp.136-145
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• 1986

Biotope analysis(UPGM) of the data on the total benthic foraminferal assemblage (Kim and Han, 1982) collected from the southeastern sea off the Korean Peninsula shows that foraminiferal assemblages are related to the water masses prevailing in the study area. South Proper facies is governed by the Tsushima Warm Current, and Southern Deep facies is influenced by the cold water mass moved down along the bottom. Northern Nearshore facies is governed by the North Korea Cold Current, and North Proper facies is affected by the North Korea Cold Current and Japan Sea Proper Water. It is also evident that the upper part of the study area is under the influence of the North Korea Cold Current rather than the East Korea Warm Current which flows northward along/or off the right side of the study area. Planktonic foraminiferal occurrence also supports this biotope analysis.

• Food Engineering Progress
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• v.15 no.1
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• pp.70-74
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• 2011

The effects of high pressure homogenization (microfluidization) on physicochemical properties of normal maize and oxidized maize starch film were studied. The molecular dispersibility of amlyose and amylopectin and the disintegration of granular structure had a marked effect on the physicochemical properties of starch films. The high pressure homogenized starch films showed increased solubility and transmittance due to the absence of gelatinized starch granules. The tensile strength of starch film increased significantly with decreasing oxygen permeability after high pressure homogenization, indicating that starch molecules were more uniformly and fully dispersed during the film formation. As a result, a clear starch film with improved mechanical properties was obtained after high pressure homogenization due to the increased interactions between the uniformly dispersed starch molecules.