• 한국통신학회논문지
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• 제25권3B호
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• pp.519-528
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• 2000

This pater presents a new fractal coding scheme to find more optimal transformation using the reference images which I determined by some criteria. After finding the transformations to minimize the distance between the original image and the reference images. we choose one of them which has the best performance. Conventional fractal coding schemes based on the collage theorem obtain the transformation to minimize the distance between an original image and its collage image because of heavy computation. In other words, it is because the optimal transformation and be obtained after the attractors of all the possible transformations are generated and then compared with an original image. As such a procedure is practically difficult to implement. the collage coding schemes using the theorem have widely used, We introduce the new scheme to overcome the complexity problem for the optimal transformation and be obtained, our scheme is evaluated. as compared with the optimal one, In general cases that the optimal one is unavailable. our scheme is also evaluated, as compared with the conventional schemes.

• 가족자원경영과 정책
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• 제9권2호
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• pp.163-183
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• 2005

In order to clarify and redefine theoretical concepts of consumptions in modern society, the study examines currently enlarging and changing concepts of consumptions. Definitely, the modern society is transferred from industrial society to consumer society, and the meaning of recent consumptions is changed and expanded. In other words, it is important to investigate new cultures and concepts of modern consumptions beyond the fixed perceptions of past consumptions. Today, consumptions in modem society are more than just consumptions. It is not only Physical needs but also Psychological needs of individuals who live in modern society. Hence, this study analyzes and redefines the concepts in modem society's consumptions with respect to set of variables: personal, social, commercial, cultural, and ecological.

• Journal of Information Processing Systems
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• 제14권1호
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• pp.101-128
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• 2018

Thanks to its potential in many applications, Blockchain has recently been nominated as one of the technologies exciting intense attention. Blockchain has solved the problem of changing the original low-trust centralized ledger held by a single third-party, to a high-trust decentralized form held by different entities, or in other words, verifying nodes. The key contribution of the work of Blockchain is the consensus algorithm, which decides how agreement is made to append a new block between all nodes in the verifying network. Blockchain algorithms can be categorized into two main groups. The first group is proof-based consensus, which requires the nodes joining the verifying network to show that they are more qualified than the others to do the appending work. The second group is voting-based consensus, which requires nodes in the network to exchange their results of verifying a new block or transaction, before making the final decision. In this paper, we present a review of the Blockchain consensus algorithms that have been researched and that are being applied in some well-known applications at this time.

• 미생물학회지
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• 제18권4호
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• pp.155-160
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• 1980

Microorgansims utilizing anionic detergent as their carbon and sulfur sources were isolated from soils and sewages. Alkyl benzene sulfonate (Hiti) and sodium dodecyl sulfonate (SDS) were the detergent compound tested. Three of these isolated microorganisms were identified as Pseudomonas spp. and the others asKlbsiella, Enterobacter and Acinetobacter. Biodegradation rate of the detergents and growth rate of Acinetobacter Strain II-8, Pseudomonas strain H-3-1 and 554 among six isolated microorganisms were investigated with colorimetric, warburg manometric, and ultraviolet absorption analyses. By performance of 4 serial successive tranfer to new culture broth for the purpose of adaptation method, ABS and SDS could be degraded to far more than 40%-60% and 70%-75%, respectively. However the employment of nonadaptation method, ABS and SDS were degraded to 30%-45% and 45%-65%, respectively. In another words, detergents degradation ability was increased to a certain extent by successive transfer to the new minimal media. We would conclude that the development of adaptation was effective in the removal of recalcitrant compounds.

• International Journal of Computer Science & Network Security
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• 제21권12spc호
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• pp.579-585
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• 2021

This study aims to provide an in-depth description of the practices of social media users in the Kingdom of Saudi Arabia (KSA)-specifically the users of Facebook and Snapchat-and the reasons for these practices, the decisions made, and the people involved. Qualitative methods were used to collect data in two rounds from 53 participants. The data analysis shows a clear preference for Snapchat over Facebook among the participants, as shown in their using the application many times daily and in the creation and use of new words derived from the application's name. On the other hand, one of the main reasons mentioned by the participants for not preferring Facebook was the unclear policy of security and privacy used in the application. This reason is important for all social media users, but, in particular, it is crucial for female users, as shown in the data. This is important for the designers and policymakers of the social media applications to understand and consider, as it would help them improve the current applications and create new ones.

• 비교문화연구
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• 제33권
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• pp.359-384
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• 2013

There is linguistic phenomenon that Korean syllable, morpheme and word are substituted with Chinese Character. These phenomenon is called Chinese Character Borrowing, the Chinese character used here is called Borrowed Chinese Character. Whereas borrowing Chinese character in Chinese is used for borrowing only sound for different word, borrowing Chinese character in Korean is used for assigning new meaning. Hence, by borrowing Chinese character in Korean, a syllable which had no meaning originally get new meaning, morpheme and word meaning has changed. At advertisement and campaign, Chinese Character Borrowing has lots of linguistical advantage such as visual immediacy, effectiveness of meaning expression. However, there are number of cases found that violate grammar rule and word constitution practice by Chinese Character Borrowing. For this reason, Chinese Character Borrowing has the problem polluting Korean along with another foreign words. Thus, this paper focus on study Chinese Character Borrowing phenomenon in Korean, and analysis its effectiveness and impact in Korean. In addition, analysis the problem of Borrowed chinese Character, and suggestion several alternative for right use of Korean is followed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권3호
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• pp.993-1014
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• 2021

This paper proposes a new image retrieval method called the 3D integrated multi-index to fuse SIFT (Scale Invariant Feature Transform) visual words with other features at the indexing level. The advantage of the 3D integrated multi-index is that it can produce finer subdivisions in the search space. Compared with the inverted indices of medium-sized codebook, the proposed method increases time slightly in preprocessing and querying. Particularly, the SIFT, contour and colour features are fused into the integrated multi-index, and the joint cooperation of complementary features significantly reduces the impact of false positive matches, so that effective image retrieval can be achieved. Extensive experiments on five benchmark datasets show that the 3D integrated multi-index significantly improves the retrieval accuracy. While compared with other methods, it requires an acceptable memory usage and query time. Importantly, we show that the 3D integrated multi-index is well complementary to many prior techniques, which make our method compared favorably with the state-of-the-arts.

• 무역학회지
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• 제46권5호
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• pp.83-98
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• 2021

This study aims to examine the effects of international trade in intermediate input on the implications of international business cycle properties in Korea. To do this, I have extended standard one goods New Keynesian international business cycle model to incorporate the role of intermediate inputs. After constructing the DSGE model, I have analysed the impulse response function and varian decomposition results. The results show that the model could introduce a new channel, that is, "cost channel" like Eyquem and Kamber (2014). In other words, the model has changed the dynamics of aggregate inflation by the cost channel. When the trade in intermediate goods increase, which is measured by openness of foreign input, the volatility of output, consumption and inflation increase two or three times. However, the model itself fails to explain the full account of cycle behavior of historical data, but the results imply that the trade in intermediate input assumption can help to improve the forecasting ability of international business cycle models.

• 한일민족문제연구
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• 제32호
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• pp.35-68
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• 2017

The map where so-called 'New Religion' of Korea in the Colonial Era is entangled with 'Religion (Christianity, Buddhism, Shindo)' recognized by the Japanese Government General of Korea and nationalism. Accordingly positive research on how religious ideal and ideology in 'New Religion' in Korea was practically applied and practiced in the society is a crucial task. Meanwhile there is survey data representing the status in the long term from 1860s to early 1930s in regard to 'New Religion' of Korea in the Colonial Era. In other words it is 'Pseudo Religion in Joseon' by Murayama Jijun published in 1935. Most part of them are shown through statistics data. In particular he took a look at the distribution of 'Pseudo Religion', ups and downs of religious influence, faith consciousness, its impact and religious ideological movement and social movement. Therefore, if this statistical data could be utilized through quellenkritik, it is thought to have value of significant reference in research on Korea's 'New Religion'. This paper utilizes many statistics included in the survey data among critical review on recognition in Murayama's 'New Religion in Korea' as basic texts. During the procedure this paper seeks to look at the geology of Korean 'New Religion' and attempts basic consideration in the quantitative term related to trend and ups and downs of the groups. Through this basic research I hope that 'public concern of New Religion' in modern Korea and research on re-establishment will move forward.

• 정보관리연구
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• 제42권4호
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• pp.137-154
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• 2011

표제어 검색시스템은 뜻풀이를 질의로 간주하는 정보검색 시스템이다. 이러한 시스템을 구축하기 위한 가장 간단한 방법으로 사전의 표제어 뜻풀이(사전 뜻풀이)를 문서로 간주하는 정보검색 시스템을 구축하는 것이다. 이 문서의 길이가 너무 짧아 사용자 질의(사용자 뜻풀이)에 대한 적절한 표제어를 검색하기 어렵다. 이 문제를 완화하기 위해서 본 논문에서는 정보검색에서 사용되는 질의 확장 개념을 문서 확장에 적용한다. 본 논문에서는 문서 확장 방법으로는 뜻풀이 확장과 유의어 확장을 사용한다. 뜻풀이 확장은 주어진 단어의 사전 뜻풀이에 속하는 단어의 뜻풀이를 문서에 포함시키는 방법이고, 유의어 확장은 무자질 군집화 알고리즘을 통해서 유의어를 찾고, 찾아진 유의어를 문서에 포함시키는 방법이다. 제안된 표제어 검색시스템은 사전 뜻풀이 그 자체를 입력으로 할 때, 16-포함률이 거의 100%에 달하였다. 또한 사용자 뜻풀이를 입력으로 할 때, 20-포함률이 66.9%였다. 사용자 뜻풀이가 단어의 의미를 충분히 전달할 수 없는 것으로 관찰되었으며 앞으로 정확하고 객관적인 평가를 위해서 평가 집합에 대한 연구가 추가적으로 필요한 실정이다.