• Information Systems Review
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• v.9 no.3
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• pp.99-132
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• 2007

As customer management rises by important issue in electronic commerce, virtue study about CRM have proceeded much. However, because existent researches were positive researches of most statistical base, There are some limitation that does not show dynamic change with CRM flow by flowing of time, and can not forecast propriety and future result about CRM strategy. Therefore, in order to overcome existent limitation on these CRM study, this study designed dynamic model which draws factors that compose CRM strategy of on-line shopping mall, and do based on technique in system dynamics so that can analyze dynamic change between these factors. Concretely, atomized customer focuses in the on-line shopping mall and does based on Permission marketing theory, and applied CRM of different level to atomized customers and know change of customer satisfaction measurement and discomfort degree accordingly. According to the result of Simulation practice, situation that achieve CRM strategy of different level by atomize customer more increase the customer satisfaction than situation that is not so. Dynamic pattern that presented in this study is expected that can verify validity about CRM achievement strategy of different level at each CRM point of contact & how Internet enterprise including on-line shopping mall is establishing CRM strategy reasonably.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.17 no.3
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• pp.288-296
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• 1992

This paper describes an improved 2D QPS(quadrature polar separable) filter design and its applications to texture processing. The filter kernel pair consists of the product of a radial weighting function based on the finite PSS (prolate spheroidal sequences) and an exponential at tenuation function for the orientational angle. It is quadrature and polar separable in the frequency domain. It is near optimal in the energy loss because we let the orientational angle function approximate the radial weighting function. The filter frequency characteristics is easy to control as it depends only upon the design specifications such as the bandwidth, the directional angle, the attenuation constant, and the shift constant of the central frequency. Some applications of the filter in texture processing, such as the generation of the texture image, the estimation of orientation angles, and the segmentations for the synthetic texture image, are considered. The result shows that the filter with the wide bandwidth can be used for the generation of discrimination of the strong orientational textures and the segmentation results are good.

• Journal of Digital Convergence
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• v.8 no.2
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• pp.217-228
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• 2010

There are two streams on e-Learning. The first one is to create new value through aligning products included information systems and service. The second one is to utilize the service system and the service process for service systematization. The service system is made up human, technology, value proposition, service network, and shared information. The service process consists of design, development, operation and evaluation phases. In this paper, we design and implement the evaluation management of e-learning service based on the service science. The evaluation management service is sets of evaluation type management, general review management, award management, evaluation sheet management and evaluation result management. Feature of this paper is that we can service with different criteria to learner, guardian and evaluator. The worthy of this paper is that we construct service oriented environment possible to systematize evaluation work easily and provide evaluation results clearly.

• KSBB Journal
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• v.26 no.2
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• pp.172-176
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• 2011

This study was aimed to verify suppressive effect of pine-needle extract on lipopolysaccharide (LPS)-induced inducible nitric oxide synthase (iNOS) expression. In order to evaluate suppressive effect on iNOS expression, RAW 264.7 cells were stably transfected using an iNOS promoterluciferase reporter plasmid yielding RAW 264.7/pGL2-NeomiNOS_ pro11 cells. Established in vitro detection system revealed to diminish LPS-induced iNOS expression by 0.1~500 ${\mu}g/mL$ of saponin at the concentration-dependant manner. Pine needle extract also diminished LPS-induced iNOS expression to 92 and 88% at 500 and 50 ${\mu}g/mL$, respectively. These results suggest that the in vitro detection system developed here could be useful for the verification of suppressive materials on iNOS expression and pine needle extract could be used for the development of functional foods.

• Journal of the Korean Regional Science Association
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• v.37 no.2
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• pp.49-61
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• 2021

Long-distance commuting is a problem as people living in Gyeonggi-Incheon contitue to commute to Seoul in the Seoul metropolitan area. To solve this problem, policies in the region are aiming for a self-sufficient zone formation plan and a compact city. However, urban problems caused by such long-distance commuting continue. This appears to be due to excessive density and Seoul-dependent networks. However, existing studies have focused on individual cities despite the importance of inter-city interactions, and had limitations in not considering the characteristics of the Seoul-dependent networks. Therefore, the purpose of this study is to empirically analyze the effect of the compactness on commuter travels by comprehensively considering the interactions between cities within the region using multiple regression. As a result of the analysis, it was found that that commuting efficiency increases when a network of more than a certain size is formed, and the results imply that policies should focus on fostering network centers in Incheon and Gyeonggi regions, which are outside the metropolitan area, and consider to expand the transportation networks at the regional level.

• Journal of Advanced Navigation Technology
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• v.27 no.3
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• pp.255-261
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• 2023

A main purpose of this research was to analyze environmental factors to influence helicopter accidents contrary to the fact that the almost 80% of helicopter accidents happened due to pilots' human errors. There have been about 14 helicopter accidents in civil aviation sector last decade. It is noteworthy that nine of 14 accidents happened during the external sling load operation. Moreover, there is no law or regulation which could cover the helicopter external sling load operation or human external cargo in Korea. In this paper, it was analyzed the training and education regulations regarding helicopter external sling load operation or human external cargo in regulations of FAA and EASA, Based on analyzing and comparing the FAR part 133 and domestic aviation law (aviation safety act and flight safety regulations), it was found out the implication how to apply helicopter type rating for external sling load operation and human external cargo operation. To sum up, this paper expect central government should cooperate and amend aviation law which apply external sling load operation and external cargo to establish sound safety culture in Korea.

• Journal of Korean Philosophical Society
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• no.126
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• pp.141-165
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• 2019

The ability hypothesis about black-and-white Mary once enjoyed the status of the "received view." But its popularity has declined since then. There seem to be two reasons for this. One is Martine Nida-Rümeline criticism against the ability hypothesis, where he tries to show that what Mary learns upon release is more than a bunch of abilities. The other is Jason Stanley and Timothy Williamson's criticism. They argue that the abilities Mary acquires amount to "knowledge-how", which in turn is reduced to "knowledge-that." This essay aims to defend the ability hypothesis against these criticisms, and thereby restore the status of the ability hypothesis. As for the first criticism, it is argued that the kind of knowledge Mary acquires other than the abilities is "demonstrative knowledge," which not only poses no threat to physicalism, but also is orthogonal to phenomenal knowledge. As for the second criticism, it is argued that by ruling out "the ability to imagine experiences," the ability hypothesis can survive Stanley and Williamson's criticism.

• The Journal of Korean Philosophical History
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• no.43
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• pp.267-293
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• 2014

This paper is aimed at analyzing the characteristics of Image-Meaning theory focused on image in the early days of the Joseon Dynasty and SongMing period. Zhouyi' theory in the early days of the Joseon Dynasty was constructed on the basis of Zhouyi' theory of SongMing period. The characteristics of Image-Meaning theory in the early days of the Joseon Dynasty can be explained largely by two routes. One is the perspective of critical succession on Zhouyi'theory of focusing on meaning that led Chengyi(程?) and Yangwanli(楊萬裏). As the representative of this route, Gwongeun and Toegye not only asserted Image-meaning theory focused on meaning, but also developed a perspective of taking all the image and meaning. The other is the active succession and creative transformation about Image-Meaning theory of Tushuxue that led Chentuan(陳?) and Shaoyong(邵雍). As the representative of that route, Yulgok and Yeohun explained the schematic diagram of the universe of the universe by using methodology of Tushuxue. Furthermore, they actively succeed Shaoyong' Zhouyi theory to expand Image-Meaning theory focused on number. In addition, Cho, Haoyi(曺好益)described the propositions - "meaning is not out of image area, image equipped with meaning all, then there is no law of limitation in image adopted theory. Those propositions are opposed to Chengyi(程?) and Zhuxi(朱熹)' ZhouYi' theory.

• Journal of Korean Philosophical Society
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• v.105
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• pp.321-350
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• 2008

The purpose of this paper is to identify the difference between Sangsan-Simhak(象山心學) and Yangming-Simhak(陽明心學). This means that the whole history of Sung Confucianism needs to be understood based on changing philosophical paradigm according to the times, not general perception which regards the whole history of Sung Confucianism as Li-Hak (理學) and Sim-Hak(心學). This kind of perception is caused by the general perception which divides Sung Confucianism into Sim-Hak and Li-Hak. We regard the former as Chung-Chu study and the latter as Liu-Yang study. Because of this, Sangsan study is recognized as the former stage study of Yangming study and can not be placed in independent position in whole history of Sung Confucianism. And Sang is regarded that it takes diametrical opposition with Chuhsi study. So it is said that there is no point of sameness among them. But Sangsan study was generated from 'Song-Hak(宋學)' based on paradigm of Li-Hak and Yangming study was generated from 'Ming-Hak(明學)' based on paradigm of Sim-Hak. The difference between 'Song-Hak' and 'Ming-Hak' is generated from proposition called 'Sim is Li (心卽理)' that most research has overlooked. To identify these things, this paper examine the philosophical difference between 'Song-Hak' and 'Ming-Hak' and analyze the proposition 'Sim is Li(心卽理)' that regards Sangsan study and Yangming study as same philosophical system. And this paper identify the philosophical difference between Sangsan study and Yangming study by examining the method that the concept of 'Sim is Li(心卽理)' is applied in moral cultivation. This paper shows that the difference of interpretation about the concept of Li(理), between 'Song-Hak' based on Li paradigm and 'Ming-Hak' based on Ki-Hak(氣學) paradigm, causes different meaning in 'Sim is Li(心卽理)'. Through these, this paper demonstrate the difference between the paradigm of 'Song-Hak' that Chuhsi study and Sangsan study have and the paradigm of 'Ming-Hak' that Yangming study has and the fact which Sangsan study is systematic philosophy of Sung Confucianism in itself not former stage of Yangming study.

• Journal of Life Science
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• v.20 no.4
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• pp.589-596
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• 2010

We investigated antimicrobial activities of various pine (Pinus densiflora) needle extracts against antibiotic resistant strains of Staphylococcus aureus. Hot water extract showed the highest antimicrobial activity against normal and methicillin resistant Staphylococcus aureus (MRSA), however, it exhibited no antimicrobial activity against penicillin resistant S. aureus (PRSA). Hot water-hexane (HWH), hot water-ethanol (HWE), hexane, and ethanol extracts showed antimicrobial activity against S. aureus, PRSA and MRSA. Minimum inhibitory concentrations (MIC) of HWH, HWE, hexane, and ethanol extracts were 0.05, 0.05, 0.5 and 5 mg/ml, respectively, and HWH and HWE extracts showed the strongest antimicrobial activity among these extracts. Antimicrobial activities of pine needle extracts were stable after heating at $121^{\circ}C$ for 20 min. These results suggested that pine needle extracts can be used as an effective natural antimicrobial agent for food and medical industries.