• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.330-336
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• 2000

This paper discusses the potential of system dynamics modelling to support balanced scorecard. The balanced scorecard is a conceptual framework for translating an organisation's strategy into a set of performance indicators. These performance indicators are distributed across the 'classic'model's four perspective: Customers, Internal Business Processes, Financial, and Learning and Growth. This balanced scorecard, whilst having significant strength, suffers from the limitation of all performance indicator systems, namely that the interrelationships between indicators are overlooked and there is no way of taking into account the impact of delayed feedback which flows from introduction of new policy and legislative changes. System Dynamics is a methodology for understanding complex problems where there is dynamic behaviour and where feedback impacts significantly on system outcomes. System dynamics provides a rigorous basis for qualitative testing of the effects of performance indicators in complex environments such as health or social security. This can be supplemented with quantitative system dynamics simulation tools that further test the validity of indicators and the business rules implicit in them. System dynamics modelling has an important role to play in extending feedback cycle in performance measurements to a full systems approach.

• Asian-Australasian Journal of Animal Sciences
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• v.28 no.9
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• pp.1217-1225
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• 2015

Chicken is a major food source for humans, hence it is important to understand the mechanisms involved in nutrient absorption in chicken. In the gastrointestinal tract (GIT), the microbiota plays a central role in enhancing nutrient absorption and strengthening the immune system, thereby affecting both growth and health of chicken. There is little information on the diversity and functions of chicken GIT microbiota, its impact on the host, and the interactions between the microbiota and host. Here, we review the recent metagenomic strategies to analyze the chicken GIT microbiota composition and its functions related to improving metabolism and health. We summarize methodology of metagenomics in order to obtain bacterial taxonomy and functional inferences of the GIT microbiota and suggest a set of indicator genes for monitoring and manipulating the microbiota to promote host health in future.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.8
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• pp.9-15
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• 2013

With low carbon and green growth as the policy indicator, Korea has been concentrating on a variety of researches and technical development as well as recommending the LED lighting facility as part of Green Energy policy to cope with the environment and energy crisis. While the interest on LED has been increasing, the development of LED is still in its early stage and researches on diverse aspects of LED are not sufficiently implemented. Thus, this paper aimed to get the data that would help the expansion of LED lighting by comparing and analyzing the awareness and knowledge level of the public and experts on LED lighting.

• KIEAE Journal
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• v.5 no.2
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• pp.3-10
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• 2005

The purpose of this study was to identify environmental perception of eco-friendly apartment residents in the perspective of ecology. Questionnaire survey was adopted in this study, and 92 cases were used for data analysis. As an indicator of environmental perception, the New Ecological Paradigm (NEP) instrument was used. The NEP instrument consists of five dimensions: the reality of limits to growth, anti-anthropocentrism, the fragility of nature's balance, the rejection of exemptionalism, and the possibility of an eco-crisis. The findings showed that the residents held ecological environmental perceptions. Various social characteristics(gender, age, income) of the respondents were related to acceptance of the NEP.

• Proceedings of the CALSEC Conference
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• 2005.11a
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• pp.17-28
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• 2005

The cybermoney marketplace has been improved by many changes of a business model, such as the development of online exchange, online mileage, potalmoney and gamemoney and so on. Because of its continuous growth, the need for categorizing manketplaces and researching on cybermoney marketplace status and problems has been increased. Therefore, in this paper, We researched about cybermoney marketplace's status and problems. We suggest the indicator that could classily cybermoney. We examined the status of cybermoney marketplace and identified the issues of development of cybermoney.

• Journal of Forest and Environmental Science
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• v.7 no.1
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• pp.7-21
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• 1990

Without scientific understanding of the phase change and the rejuvenation in woody perennials, many tree breeders have successfully rejuvenated and multiplied mature trees of some tree species, i.e., Eucalyptus, Pseudotsuga menziesii Sequoia sempervirens, Pinus radiata, Pinus pinaster, Quercus virginiana, Hedera helix, Juglans, apples, grapes, and so on. Practical techniques discussed to rejuvenate the old trees include grafting to younger stock, growth regulator treatment, pruning, repeated cutting, and in vitro culture. However, a combination of skills mentioned is recommended for rejuvenation of the mature propagation material. It is strongly required to develop a morphological and/or biochemical indicator system to judge the juvenility.

• 한국생태학회:학술대회논문집
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• 2002.08a
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• pp.83-91
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• 2002

The Red Queen hypothesis for the advantage of sex predicts that pathogens will evolve by increasing fitness with frequent encounters with specific host genotypes. In this study, BMV population size, measured as an indicator of fitness, was investigated during repeated passages through the same, or different host genotypes of the crop host, Hordeum vulgare (barley). Overall, mean BMV concentration within individual hosts was significantly higher in genetically homogeneous compared to heterogeneous host passage lines. In addition, BMV populations, passaged through a specific host variety, showed higher growth in that host variety compared to BMV passaged through varying varieties. These results supports the Red Queen hypothesis. However, the decrease in viral populations during passages contradicts the Red Queen. Nevertheless, the results found here show that even under simplified conditions, pathogens do not evolve in simple, predictable ways. Constraints on pathogen evolution may lead to counterintuitive results.

• Mycobiology
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• v.33 no.4
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• pp.210-214
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• 2005

More than 120 isolates of lactic acid bacteria obtained from Kimchi was screened for antifungal activity against Aspergillus fumigatus. Approximately 10% of the isolates showed inhibitory activity and only 4.16% (five isolates) exhibited strong activity against the indicator fungus A. fumigatus. The five isolates showed a wide rang of antifungal activity against A. flavus, Fusarium moniliforme, Penicillium commune, and Rhizopus oryzae. They were identified by 16S rDNA sequencing as Lactobacillus cruvatus, L. lactis subsp. lactis, L. casei, L. pentosus, and L. sakei. The effect of Lactobacillus on mycelial growth and fungal biomass as well as its ability to produce toxic compounds were determined. The results indicate that the three species, Lactobacillus casei, L. lactis subsp. lactis, and L. pentosus, are active against A. fumigatus.

• Journal of the Korean Society for Library and Information Science
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• v.24
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• pp.221-261
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• 1993

The production, storage, processing and distribution of information is fast becoming a major economic activity for many nations of the world. The basic idea of this study is that knowledge and information are becoming the strategic resources and transforming agents in the information society. Therefore, in order to cope with successfully the transition toward the information society, the development of measurement tools and social indicators is essential. The purpose of this study is to fulfill three major objectives with regard to the analysis of the information sector in the information society. (1) This study suggests the theoretical definitions and social indicators of the information society. (2) This study investigates an empirical study of the information sector consisting of information industry, information workforce, and information indicator of the selected nations. (3) It advances theoretical explanations of the major factors of the growth of the information sector, and develops theoretical hypothesis and explanations of the information society.

• Bulletin of the Korean Chemical Society
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• v.23 no.10
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• pp.1451-1489
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• 2002

Sphingosine is known to regulate a wide range of cell physiology including growth, differentiation, and apoptosis. In this study, we examined the effect of sphingosine on the phospholipase D (PLD) activity in rat thymocytes. Sphingosine potently stimulated PLD in the absence of extracellular calcium, while depletion of intracellular calcium by BAPTA/AM treatment completely blocked activation of PLD by sphingosine. Sphingosine-induced increase of the intracellular calcium concentration was confirmed using a fluorescent calcium indicator Fluo-3/AM. A phosphoinositide-specific phospholipase C inhibitor U73122 partially inhibited the stimulation of PLD by sphingosine. When mouse PLD2 gene was transfected into mouse thymoma EL4 cells, which lack intrinsic PLD activity, sphingosine could stimulate PLD2 significantly while overexpression of human PLD1 had no effect. Taken together, the sphingosine-stimulated PLD activity in rat thymocytes is dependent on the mobilization of intracellular calcium and appears to be due to the PLD2 isoform.