• Korean Journal of Social Welfare
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• v.65 no.1
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• pp.83-107
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• 2013

The purpose of this study is to understand the life experiences of an adult adoptee. For this purpose, the data were collected through in-depth interviews with an adult adoptee, observation, and documents and analyzed using life history approach. Results of analysis were composed of summarized life history, thick description of life history, theme analysis, and issues for intervention. The themes generated from analysis are 'a slub', 'a larva that want to be a butterfly', 'I am okay. No, I am not okay', 'because it is not my fault', 'love, the critical determinant leading my life'. Researchers, also, examined intervention issues of adoption, post-adoption service, closed adoption or open adoption, searching root, intervention for adult adoptee. Based on the results of this study, the policies and practical guidelines for adult adoptees were suggested.

• Journal of the Korean Geographical Society
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• v.44 no.6
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• pp.779-796
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• 2009

Pimat-gil is a bystreet over 600-years old of Jong-no in Seoul that originated in the early Joseon Dynasty. This Study defines Pimat-gol (a street village) that has developed centering around Pimat-gil (alley) as a typical backlane of modern city, traces the origin and landscapes of Pimat-gol through the historical geographies of this place, and tries to name and interpret the placeness of Pimat-gol from the angles of social and cultural geography, particularly on the basis of the concept 'place memory'. As a result, the author extracts the placeness of Pimat-gol in terms of juxtaposition of three-fold layers, ie., 'space of subaltern vs. space of escape', 'space of oblivion vs. space of recollecttion and generation', and 'space of fossil vs. space of living'. In addition, the author examines the place memories which have been sedimented in this place and the contest of the place-memories by investigating these three-fold layers, and makes a proposal which would constructs another spatiality of modern city on the basis of this case.

• Journal of the Korean Geographical Society
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• v.42 no.2 s.119
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• pp.218-242
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• 2007

This paper is to consider the developmental process of Korean geography on the context of socio-spatial transformations of Korea, and then to suggest briefly its alternative visions. The development of knowledge including geography seems to be made under imperatives of social functions and structure in a given period, and knowledge in turn gives power for a further development of society. Modem geography in Korea has progressed on the context of capitalist development of Korean society which can be divided into two phases, that is, the period of developmentalism and that of neoliberalism. Korean geography has been developed under influence of ideologies of developmentalism and neoliberalism, and in turn has made some contributions to socio-spatial policies. Korean geography in the future, it can be suggested, should go beyond both developmentalism and neoliberalism, and put socio-spatial welfare, civil society or community, and environmental justice into its central issues.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.750-753
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• 2017

Recently, the processing and utilization of big data, which is generated by the spread of smartphone, SNS, and the internet of things, is emerging as a new growth engine of ICT field. However, in order to utilize such big data, De-identification of personal information should be done. De-identification removes identifying information from a data set so that individual data cannot be linked with specific individuals. De-identification can reduce the privacy risk associated with collecting, processing, archiving, distributing or publishing information, thus it attempts to balance the contradictory goals of using and sharing personal information while protecting privacy. De-identified information has also been re-identified and has been controversial for the protection of personal information, but the number of instances where personal information such as big data is de-identified and processed is increasing. In addition, many de-identification guidelines have been introduced and a method for de-identification of personal information has been proposed. Therefore, in this study, we describe the big data de-identification process and follow-up management, and then compare and analyze de-identification methods. Finally we provide personal information protection issues and solutions.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.210-212
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• 2018

According to the OECD (Organization for Economic Cooperation and Development) report, the suicide rate of senior citizens has been high since 2009 due to lower social participation compared to their youth and depression. As entering the Information Era, it became easier to form and expand relationships due to the influence of online community sites. However, it is difficult to use these community sites for the elderly because they lack accessiblity for seniors. In this paper, we describe the content of community mobile apps for senior citizens' social solitude and participation in information society. We also, analyze why community sites are difficult to use, and suggest community mobile app interfaces and content considering physical and cognitive conditions, focusing on user scenarios based on PACMAD, one of the user assessment models. This will serve as the basis for encouraging the elderly to participate in the information society.

• The Transactions of the Korean Institute of Power Electronics
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• v.14 no.3
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• pp.251-259
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• 2009

In this paper, a contactless power supply using half-bridge series resonant converter that achieves ZVS operation of main switches and ZCS operation of secondary side diodes is proposed. Since the proposed contactless power supply using half-bridge series resonant converter operates with lower switching frequency than the resonant frequency, it can achieve ZCS operation of secondary side diodes due to discontinuous resonant current. And it is also possible to control the converter in narrow frequency range and to obtain high voltage gain, which, in turn, offers low turns ratio for the transformer and high efficiency. Based on the theoretical analysis and simulation results, the 3.15W prototype is built and the final experimental results are described.

• The KIPS Transactions:PartD
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• v.8D no.3
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• pp.273-284
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• 2001

A systematic approach for interpreting Korean addresses based on postal code is presented in this paper. The implementation is focused on producing the final delivery point code from various types of address recognized. There are two stages in the address interpretation : 1) agreement verification between the recognized postal code and upper part of the address and 2) analysis of lower part of the address. In the agreement verification procedure, the recognized postal code is used as the key to the address dictionary and each of the retrieved addresses is compared with the words in the recognized address. As the result, the boundary between the upper part and the lower part is located. The confusion matrix, which is introduced to correct possible mis-recognized characters, is applied to improve the performance of the process. In the procedure for interpreting the lower part address, a delivery code is assigned using the house number and/or the building name. Several rules for the interpretation have been developed based on the real addresses collected. Experiments have been performed to evaluate the proposed approach using addresses collected from Kwangju and Pusan areas.

• The Transactions of the Korea Information Processing Society
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• v.1 no.3
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• pp.299-310
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• 1994

Re-engineering tools can substantially increase software maintenance productivity and the quality of maintenance work. Re-engineering usually involves changing the form(e.g.changining objects names and definitions, restructuring process logic) of a program. In this paper, we describe the design and implementation of InMaC＋＋ that is a software tool oriented towards maintenance of C＋＋ object oriented programs. With InMaC＋＋, programms can be displayed and edited in two forms : as the code and as the diagram InMaC＋＋ also contains transformations in both directions, i,e. from code to diagram and from diagram to skeletons of code. Hence, it is suitable for re-engineering and maintenance of existing code. Specially designed browsers implement the graphical interface. InMaC＋＋ contains a database that is based on a simple but effective data model of InMaC＋＋ programs. The model contains only four object classes and three relations, which makes the tool small, and easy to implement and use. A simple query language allows browsing through the database.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.32 no.5C
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• pp.496-512
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• 2007

In this paper, we propose a novel JPEG-2000 compressed image retrieval system using feature vector extracted through partial entropy decoding. Main idea of the proposed method is to utilize the context information that is generated during entropy encoding/decoding. In the framework of JPEG-2000, the context of a current coefficient is determined depending on the pattern of the significance and/or the sign of its neighbors in three bit-plane coding passes and four coding modes. The contexts provide a model for estimating the probability of each symbol to be coded. And they can efficiently describe texture images which have different pattern because they represent the local property of images. In addition, our system can directly search the images in the JPEG-2000 compressed domain without full decompression. Therefore, our proposed scheme can accelerate the work of retrieving images. We create various distortion and similarity image databases using MIT VisTex texture images for simulation. we evaluate the proposed algorithm comparing with the previous ones. Through simulations, we demonstrate that our method achieves good performance in terms of the retrieval accuracy as well as the computational complexity.

• Clean Technology
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• v.21 no.1
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• pp.12-21
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• 2015

Development of novel conducting polymers (CPs) is expected to facilitate the advancement of functional materials used for energy, environmental, and nanotechnology. Recent research efforts are focused on doping CPs with functional dopants to enhance their performance or add additional functions that are not inherent in CPs. This review surveys literatures about the doped CPs focusing on the roles of functional dopants, unlike other reviews focusing on the development of new conducting polymer backbones. The functional dopants presented in this review include redox active molecules, carbon nanomaterials, biopolymers, and chelating molecules. Depending on the dopants and their physicochemical properties, the doped CPs can be used for a variety of applications such as polymer batteries, membranes for waste water treatment, and chemical sensors. A major challenge of the CPs is presented and the ways to overcome the challenge is also suggested for the future development of stable, high performance CPs.